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From mi...@apache.org
Subject svn commit: r1710495 [10/12] - in /hbase/hbase.apache.org/trunk: ./ devapidocs/org/apache/hadoop/hbase/io/hfile/bucket/ devapidocs/org/apache/hadoop/hbase/tmpl/master/ devapidocs/org/apache/hadoop/hbase/tmpl/regionserver/ devapidocs/src-html/org/apache...
Date Sun, 25 Oct 2015 23:17:10 GMT
Modified: hbase/hbase.apache.org/trunk/xref/org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html
URL: http://svn.apache.org/viewvc/hbase/hbase.apache.org/trunk/xref/org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html?rev=1710495&r1=1710494&r2=1710495&view=diff
==============================================================================
--- hbase/hbase.apache.org/trunk/xref/org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html (original)
+++ hbase/hbase.apache.org/trunk/xref/org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html Sun Oct 25 23:17:08 2015
@@ -31,539 +31,541 @@
 <a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">package</strong> org.apache.hadoop.hbase.io.hfile.bucket;
 <a class="jxr_linenumber" name="22" href="#22">22</a>  
 <a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.Arrays;
-<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.LinkedList;
-<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.List;
-<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
-<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicLong;
-<a class="jxr_linenumber" name="28" href="#28">28</a>  
-<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
-<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
-<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceAudience;
-<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.BlockCacheKey;
-<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.CacheConfig;
-<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.BucketEntry;
-<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jackson.annotate.JsonIgnoreProperties;
-<a class="jxr_linenumber" name="36" href="#36">36</a>  
-<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> com.google.common.base.Objects;
-<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> com.google.common.base.Preconditions;
-<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> com.google.common.primitives.Ints;
-<a class="jxr_linenumber" name="40" href="#40">40</a>  
-<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * This class is used to allocate a block with specified size and free the block</em>
-<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * when evicting. It manages an array of buckets, each bucket is associated with</em>
-<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * a size and caches elements up to this size. For a completely empty bucket, this</em>
-<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * size could be re-specified dynamically.</em>
-<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * </em>
-<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * This class is not thread safe.</em>
-<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="49" href="#49">49</a>  @InterfaceAudience.Private
-<a class="jxr_linenumber" name="50" href="#50">50</a>  @JsonIgnoreProperties({<span class="jxr_string">"indexStatistics"</span>, <span class="jxr_string">"freeSize"</span>, <span class="jxr_string">"usedSize"</span>})
-<a class="jxr_linenumber" name="51" href="#51">51</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketAllocator</a> {
-<a class="jxr_linenumber" name="52" href="#52">52</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(BucketAllocator.<strong class="jxr_keyword">class</strong>);
-<a class="jxr_linenumber" name="53" href="#53">53</a>  
-<a class="jxr_linenumber" name="54" href="#54">54</a>    @JsonIgnoreProperties({<span class="jxr_string">"completelyFree"</span>, <span class="jxr_string">"uninstantiated"</span>})
-<a class="jxr_linenumber" name="55" href="#55">55</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> {
-<a class="jxr_linenumber" name="56" href="#56">56</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> baseOffset;
-<a class="jxr_linenumber" name="57" href="#57">57</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> itemAllocationSize, sizeIndex;
-<a class="jxr_linenumber" name="58" href="#58">58</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> itemCount;
-<a class="jxr_linenumber" name="59" href="#59">59</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> freeList[];
-<a class="jxr_linenumber" name="60" href="#60">60</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> freeCount, usedCount;
-<a class="jxr_linenumber" name="61" href="#61">61</a>  
-<a class="jxr_linenumber" name="62" href="#62">62</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a>(<strong class="jxr_keyword">long</strong> offset) {
-<a class="jxr_linenumber" name="63" href="#63">63</a>        baseOffset = offset;
-<a class="jxr_linenumber" name="64" href="#64">64</a>        sizeIndex = -1;
-<a class="jxr_linenumber" name="65" href="#65">65</a>      }
-<a class="jxr_linenumber" name="66" href="#66">66</a>  
-<a class="jxr_linenumber" name="67" href="#67">67</a>      <strong class="jxr_keyword">void</strong> reconfigure(<strong class="jxr_keyword">int</strong> sizeIndex, <strong class="jxr_keyword">int</strong>[] bucketSizes, <strong class="jxr_keyword">long</strong> bucketCapacity) {
-<a class="jxr_linenumber" name="68" href="#68">68</a>        Preconditions.checkElementIndex(sizeIndex, bucketSizes.length);
-<a class="jxr_linenumber" name="69" href="#69">69</a>        <strong class="jxr_keyword">this</strong>.sizeIndex = sizeIndex;
-<a class="jxr_linenumber" name="70" href="#70">70</a>        itemAllocationSize = bucketSizes[sizeIndex];
-<a class="jxr_linenumber" name="71" href="#71">71</a>        itemCount = (<strong class="jxr_keyword">int</strong>) (bucketCapacity / (<strong class="jxr_keyword">long</strong>) itemAllocationSize);
-<a class="jxr_linenumber" name="72" href="#72">72</a>        freeCount = itemCount;
-<a class="jxr_linenumber" name="73" href="#73">73</a>        usedCount = 0;
-<a class="jxr_linenumber" name="74" href="#74">74</a>        freeList = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[itemCount];
-<a class="jxr_linenumber" name="75" href="#75">75</a>        <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; freeCount; ++i)
-<a class="jxr_linenumber" name="76" href="#76">76</a>          freeList[i] = i;
-<a class="jxr_linenumber" name="77" href="#77">77</a>      }
-<a class="jxr_linenumber" name="78" href="#78">78</a>  
-<a class="jxr_linenumber" name="79" href="#79">79</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isUninstantiated() {
-<a class="jxr_linenumber" name="80" href="#80">80</a>        <strong class="jxr_keyword">return</strong> sizeIndex == -1;
-<a class="jxr_linenumber" name="81" href="#81">81</a>      }
-<a class="jxr_linenumber" name="82" href="#82">82</a>  
-<a class="jxr_linenumber" name="83" href="#83">83</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> sizeIndex() {
-<a class="jxr_linenumber" name="84" href="#84">84</a>        <strong class="jxr_keyword">return</strong> sizeIndex;
-<a class="jxr_linenumber" name="85" href="#85">85</a>      }
-<a class="jxr_linenumber" name="86" href="#86">86</a>  
-<a class="jxr_linenumber" name="87" href="#87">87</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getItemAllocationSize() {
-<a class="jxr_linenumber" name="88" href="#88">88</a>        <strong class="jxr_keyword">return</strong> itemAllocationSize;
-<a class="jxr_linenumber" name="89" href="#89">89</a>      }
-<a class="jxr_linenumber" name="90" href="#90">90</a>  
-<a class="jxr_linenumber" name="91" href="#91">91</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasFreeSpace() {
-<a class="jxr_linenumber" name="92" href="#92">92</a>        <strong class="jxr_keyword">return</strong> freeCount &gt; 0;
-<a class="jxr_linenumber" name="93" href="#93">93</a>      }
-<a class="jxr_linenumber" name="94" href="#94">94</a>  
-<a class="jxr_linenumber" name="95" href="#95">95</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isCompletelyFree() {
-<a class="jxr_linenumber" name="96" href="#96">96</a>        <strong class="jxr_keyword">return</strong> usedCount == 0;
-<a class="jxr_linenumber" name="97" href="#97">97</a>      }
-<a class="jxr_linenumber" name="98" href="#98">98</a>  
-<a class="jxr_linenumber" name="99" href="#99">99</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> freeCount() {
-<a class="jxr_linenumber" name="100" href="#100">100</a>       <strong class="jxr_keyword">return</strong> freeCount;
-<a class="jxr_linenumber" name="101" href="#101">101</a>     }
-<a class="jxr_linenumber" name="102" href="#102">102</a> 
-<a class="jxr_linenumber" name="103" href="#103">103</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> usedCount() {
-<a class="jxr_linenumber" name="104" href="#104">104</a>       <strong class="jxr_keyword">return</strong> usedCount;
-<a class="jxr_linenumber" name="105" href="#105">105</a>     }
-<a class="jxr_linenumber" name="106" href="#106">106</a> 
-<a class="jxr_linenumber" name="107" href="#107">107</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getFreeBytes() {
-<a class="jxr_linenumber" name="108" href="#108">108</a>       <strong class="jxr_keyword">return</strong> freeCount * itemAllocationSize;
-<a class="jxr_linenumber" name="109" href="#109">109</a>     }
-<a class="jxr_linenumber" name="110" href="#110">110</a> 
-<a class="jxr_linenumber" name="111" href="#111">111</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getUsedBytes() {
-<a class="jxr_linenumber" name="112" href="#112">112</a>       <strong class="jxr_keyword">return</strong> usedCount * itemAllocationSize;
-<a class="jxr_linenumber" name="113" href="#113">113</a>     }
-<a class="jxr_linenumber" name="114" href="#114">114</a> 
-<a class="jxr_linenumber" name="115" href="#115">115</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getBaseOffset() {
-<a class="jxr_linenumber" name="116" href="#116">116</a>       <strong class="jxr_keyword">return</strong> baseOffset;
-<a class="jxr_linenumber" name="117" href="#117">117</a>     }
-<a class="jxr_linenumber" name="118" href="#118">118</a> 
-<a class="jxr_linenumber" name="119" href="#119">119</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment">     * Allocate a block in this bucket, return the offset representing the</em>
-<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">     * position in physical space</em>
-<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">     * @return the offset in the IOEngine</em>
-<a class="jxr_linenumber" name="123" href="#123">123</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="124" href="#124">124</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> allocate() {
-<a class="jxr_linenumber" name="125" href="#125">125</a>       assert freeCount &gt; 0; <em class="jxr_comment">// Else should not have been called</em>
-<a class="jxr_linenumber" name="126" href="#126">126</a>       assert sizeIndex != -1;
-<a class="jxr_linenumber" name="127" href="#127">127</a>       ++usedCount;
-<a class="jxr_linenumber" name="128" href="#128">128</a>       <strong class="jxr_keyword">long</strong> offset = baseOffset + (freeList[--freeCount] * itemAllocationSize);
-<a class="jxr_linenumber" name="129" href="#129">129</a>       assert offset &gt;= 0;
-<a class="jxr_linenumber" name="130" href="#130">130</a>       <strong class="jxr_keyword">return</strong> offset;
-<a class="jxr_linenumber" name="131" href="#131">131</a>     }
-<a class="jxr_linenumber" name="132" href="#132">132</a> 
-<a class="jxr_linenumber" name="133" href="#133">133</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addAllocation(<strong class="jxr_keyword">long</strong> offset) <strong class="jxr_keyword">throws</strong> BucketAllocatorException {
-<a class="jxr_linenumber" name="134" href="#134">134</a>       offset -= baseOffset;
-<a class="jxr_linenumber" name="135" href="#135">135</a>       <strong class="jxr_keyword">if</strong> (offset &lt; 0 || offset % itemAllocationSize != 0)
-<a class="jxr_linenumber" name="136" href="#136">136</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(
-<a class="jxr_linenumber" name="137" href="#137">137</a>             <span class="jxr_string">"Attempt to add allocation for bad offset: "</span> + offset + <span class="jxr_string">" base="</span>
-<a class="jxr_linenumber" name="138" href="#138">138</a>                 + baseOffset + <span class="jxr_string">", bucket size="</span> + itemAllocationSize);
-<a class="jxr_linenumber" name="139" href="#139">139</a>       <strong class="jxr_keyword">int</strong> idx = (<strong class="jxr_keyword">int</strong>) (offset / itemAllocationSize);
-<a class="jxr_linenumber" name="140" href="#140">140</a>       <strong class="jxr_keyword">boolean</strong> matchFound = false;
-<a class="jxr_linenumber" name="141" href="#141">141</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; freeCount; ++i) {
-<a class="jxr_linenumber" name="142" href="#142">142</a>         <strong class="jxr_keyword">if</strong> (matchFound) freeList[i - 1] = freeList[i];
-<a class="jxr_linenumber" name="143" href="#143">143</a>         <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (freeList[i] == idx) matchFound = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="144" href="#144">144</a>       }
-<a class="jxr_linenumber" name="145" href="#145">145</a>       <strong class="jxr_keyword">if</strong> (!matchFound)
-<a class="jxr_linenumber" name="146" href="#146">146</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(<span class="jxr_string">"Couldn't find match for index "</span>
-<a class="jxr_linenumber" name="147" href="#147">147</a>             + idx + <span class="jxr_string">" in free list"</span>);
-<a class="jxr_linenumber" name="148" href="#148">148</a>       ++usedCount;
-<a class="jxr_linenumber" name="149" href="#149">149</a>       --freeCount;
-<a class="jxr_linenumber" name="150" href="#150">150</a>     }
-<a class="jxr_linenumber" name="151" href="#151">151</a> 
-<a class="jxr_linenumber" name="152" href="#152">152</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> free(<strong class="jxr_keyword">long</strong> offset) {
-<a class="jxr_linenumber" name="153" href="#153">153</a>       offset -= baseOffset;
-<a class="jxr_linenumber" name="154" href="#154">154</a>       assert offset &gt;= 0;
-<a class="jxr_linenumber" name="155" href="#155">155</a>       assert offset &lt; itemCount * itemAllocationSize;
-<a class="jxr_linenumber" name="156" href="#156">156</a>       assert offset % itemAllocationSize == 0;
-<a class="jxr_linenumber" name="157" href="#157">157</a>       assert usedCount &gt; 0;
-<a class="jxr_linenumber" name="158" href="#158">158</a>       assert freeCount &lt; itemCount; <em class="jxr_comment">// Else duplicate free</em>
-<a class="jxr_linenumber" name="159" href="#159">159</a>       <strong class="jxr_keyword">int</strong> item = (<strong class="jxr_keyword">int</strong>) (offset / (<strong class="jxr_keyword">long</strong>) itemAllocationSize);
-<a class="jxr_linenumber" name="160" href="#160">160</a>       assert !freeListContains(item);
-<a class="jxr_linenumber" name="161" href="#161">161</a>       --usedCount;
-<a class="jxr_linenumber" name="162" href="#162">162</a>       freeList[freeCount++] = item;
-<a class="jxr_linenumber" name="163" href="#163">163</a>     }
-<a class="jxr_linenumber" name="164" href="#164">164</a> 
-<a class="jxr_linenumber" name="165" href="#165">165</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> freeListContains(<strong class="jxr_keyword">int</strong> blockNo) {
-<a class="jxr_linenumber" name="166" href="#166">166</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; freeCount; ++i) {
-<a class="jxr_linenumber" name="167" href="#167">167</a>         <strong class="jxr_keyword">if</strong> (freeList[i] == blockNo) <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="168" href="#168">168</a>       }
-<a class="jxr_linenumber" name="169" href="#169">169</a>       <strong class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="170" href="#170">170</a>     }
-<a class="jxr_linenumber" name="171" href="#171">171</a>   }
-<a class="jxr_linenumber" name="172" href="#172">172</a> 
-<a class="jxr_linenumber" name="173" href="#173">173</a>   <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> {
-<a class="jxr_linenumber" name="174" href="#174">174</a>     <em class="jxr_comment">// Free bucket means it has space to allocate a block;</em>
-<a class="jxr_linenumber" name="175" href="#175">175</a>     <em class="jxr_comment">// Completely free bucket means it has no block.</em>
-<a class="jxr_linenumber" name="176" href="#176">176</a>     <strong class="jxr_keyword">private</strong> List&lt;Bucket&gt; bucketList, freeBuckets, completelyFreeBuckets;
-<a class="jxr_linenumber" name="177" href="#177">177</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> sizeIndex;
-<a class="jxr_linenumber" name="178" href="#178">178</a> 
-<a class="jxr_linenumber" name="179" href="#179">179</a>     <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a>(<strong class="jxr_keyword">int</strong> sizeIndex) {
-<a class="jxr_linenumber" name="180" href="#180">180</a>       bucketList = <strong class="jxr_keyword">new</strong> LinkedList&lt;Bucket&gt;();
-<a class="jxr_linenumber" name="181" href="#181">181</a>       freeBuckets = <strong class="jxr_keyword">new</strong> LinkedList&lt;Bucket&gt;();
-<a class="jxr_linenumber" name="182" href="#182">182</a>       completelyFreeBuckets = <strong class="jxr_keyword">new</strong> LinkedList&lt;Bucket&gt;();
-<a class="jxr_linenumber" name="183" href="#183">183</a>       <strong class="jxr_keyword">this</strong>.sizeIndex = sizeIndex;
-<a class="jxr_linenumber" name="184" href="#184">184</a>     }
-<a class="jxr_linenumber" name="185" href="#185">185</a> 
-<a class="jxr_linenumber" name="186" href="#186">186</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> instantiateBucket(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b) {
-<a class="jxr_linenumber" name="187" href="#187">187</a>       assert b.isUninstantiated() || b.isCompletelyFree();
-<a class="jxr_linenumber" name="188" href="#188">188</a>       b.reconfigure(sizeIndex, bucketSizes, bucketCapacity);
-<a class="jxr_linenumber" name="189" href="#189">189</a>       bucketList.add(b);
-<a class="jxr_linenumber" name="190" href="#190">190</a>       freeBuckets.add(b);
-<a class="jxr_linenumber" name="191" href="#191">191</a>       completelyFreeBuckets.add(b);
-<a class="jxr_linenumber" name="192" href="#192">192</a>     }
-<a class="jxr_linenumber" name="193" href="#193">193</a> 
-<a class="jxr_linenumber" name="194" href="#194">194</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> sizeIndex() {
-<a class="jxr_linenumber" name="195" href="#195">195</a>       <strong class="jxr_keyword">return</strong> sizeIndex;
-<a class="jxr_linenumber" name="196" href="#196">196</a>     }
-<a class="jxr_linenumber" name="197" href="#197">197</a> 
-<a class="jxr_linenumber" name="198" href="#198">198</a>     <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_javadoccomment">     * Find a bucket to allocate a block</em>
-<a class="jxr_linenumber" name="200" href="#200">200</a> <em class="jxr_javadoccomment">     * @return the offset in the IOEngine</em>
-<a class="jxr_linenumber" name="201" href="#201">201</a> <em class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="202" href="#202">202</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> allocateBlock() {
-<a class="jxr_linenumber" name="203" href="#203">203</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="204" href="#204">204</a>       <strong class="jxr_keyword">if</strong> (freeBuckets.size() &gt; 0) <em class="jxr_comment">// Use up an existing one first...</em>
-<a class="jxr_linenumber" name="205" href="#205">205</a>         b = freeBuckets.get(freeBuckets.size() - 1);
-<a class="jxr_linenumber" name="206" href="#206">206</a>       <strong class="jxr_keyword">if</strong> (b == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="207" href="#207">207</a>         b = grabGlobalCompletelyFreeBucket();
-<a class="jxr_linenumber" name="208" href="#208">208</a>         <strong class="jxr_keyword">if</strong> (b != <strong class="jxr_keyword">null</strong>) instantiateBucket(b);
-<a class="jxr_linenumber" name="209" href="#209">209</a>       }
-<a class="jxr_linenumber" name="210" href="#210">210</a>       <strong class="jxr_keyword">if</strong> (b == <strong class="jxr_keyword">null</strong>) <strong class="jxr_keyword">return</strong> -1;
-<a class="jxr_linenumber" name="211" href="#211">211</a>       <strong class="jxr_keyword">long</strong> result = b.allocate();
-<a class="jxr_linenumber" name="212" href="#212">212</a>       blockAllocated(b);
-<a class="jxr_linenumber" name="213" href="#213">213</a>       <strong class="jxr_keyword">return</strong> result;
-<a class="jxr_linenumber" name="214" href="#214">214</a>     }
-<a class="jxr_linenumber" name="215" href="#215">215</a> 
-<a class="jxr_linenumber" name="216" href="#216">216</a>     <strong class="jxr_keyword">void</strong> blockAllocated(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b) {
-<a class="jxr_linenumber" name="217" href="#217">217</a>       <strong class="jxr_keyword">if</strong> (!b.isCompletelyFree()) completelyFreeBuckets.remove(b);
-<a class="jxr_linenumber" name="218" href="#218">218</a>       <strong class="jxr_keyword">if</strong> (!b.hasFreeSpace()) freeBuckets.remove(b);
-<a class="jxr_linenumber" name="219" href="#219">219</a>     }
-<a class="jxr_linenumber" name="220" href="#220">220</a> 
-<a class="jxr_linenumber" name="221" href="#221">221</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> findAndRemoveCompletelyFreeBucket() {
-<a class="jxr_linenumber" name="222" href="#222">222</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="223" href="#223">223</a>       assert bucketList.size() &gt; 0;
-<a class="jxr_linenumber" name="224" href="#224">224</a>       <strong class="jxr_keyword">if</strong> (bucketList.size() == 1) {
-<a class="jxr_linenumber" name="225" href="#225">225</a>         <em class="jxr_comment">// So we never get complete starvation of a bucket for a size</em>
-<a class="jxr_linenumber" name="226" href="#226">226</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="227" href="#227">227</a>       }
-<a class="jxr_linenumber" name="228" href="#228">228</a> 
-<a class="jxr_linenumber" name="229" href="#229">229</a>       <strong class="jxr_keyword">if</strong> (completelyFreeBuckets.size() &gt; 0) {
-<a class="jxr_linenumber" name="230" href="#230">230</a>         b = completelyFreeBuckets.get(0);
-<a class="jxr_linenumber" name="231" href="#231">231</a>         removeBucket(b);
-<a class="jxr_linenumber" name="232" href="#232">232</a>       }
-<a class="jxr_linenumber" name="233" href="#233">233</a>       <strong class="jxr_keyword">return</strong> b;
-<a class="jxr_linenumber" name="234" href="#234">234</a>     }
-<a class="jxr_linenumber" name="235" href="#235">235</a> 
-<a class="jxr_linenumber" name="236" href="#236">236</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> removeBucket(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b) {
-<a class="jxr_linenumber" name="237" href="#237">237</a>       assert b.isCompletelyFree();
-<a class="jxr_linenumber" name="238" href="#238">238</a>       bucketList.remove(b);
-<a class="jxr_linenumber" name="239" href="#239">239</a>       freeBuckets.remove(b);
-<a class="jxr_linenumber" name="240" href="#240">240</a>       completelyFreeBuckets.remove(b);
-<a class="jxr_linenumber" name="241" href="#241">241</a>     }
-<a class="jxr_linenumber" name="242" href="#242">242</a> 
-<a class="jxr_linenumber" name="243" href="#243">243</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> freeBlock(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b, <strong class="jxr_keyword">long</strong> offset) {
-<a class="jxr_linenumber" name="244" href="#244">244</a>       assert bucketList.contains(b);
-<a class="jxr_linenumber" name="245" href="#245">245</a>       <em class="jxr_comment">// else we shouldn't have anything to free...</em>
-<a class="jxr_linenumber" name="246" href="#246">246</a>       assert (!completelyFreeBuckets.contains(b));
-<a class="jxr_linenumber" name="247" href="#247">247</a>       b.free(offset);
-<a class="jxr_linenumber" name="248" href="#248">248</a>       <strong class="jxr_keyword">if</strong> (!freeBuckets.contains(b)) freeBuckets.add(b);
-<a class="jxr_linenumber" name="249" href="#249">249</a>       <strong class="jxr_keyword">if</strong> (b.isCompletelyFree()) completelyFreeBuckets.add(b);
-<a class="jxr_linenumber" name="250" href="#250">250</a>     }
-<a class="jxr_linenumber" name="251" href="#251">251</a> 
-<a class="jxr_linenumber" name="252" href="#252">252</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">IndexStatistics</a> statistics() {
-<a class="jxr_linenumber" name="253" href="#253">253</a>       <strong class="jxr_keyword">long</strong> free = 0, used = 0;
-<a class="jxr_linenumber" name="254" href="#254">254</a>       <strong class="jxr_keyword">for</strong> (Bucket b : bucketList) {
-<a class="jxr_linenumber" name="255" href="#255">255</a>         free += b.freeCount();
-<a class="jxr_linenumber" name="256" href="#256">256</a>         used += b.usedCount();
-<a class="jxr_linenumber" name="257" href="#257">257</a>       }
-<a class="jxr_linenumber" name="258" href="#258">258</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">IndexStatistics</a>(free, used, bucketSizes[sizeIndex]);
-<a class="jxr_linenumber" name="259" href="#259">259</a>     }
-<a class="jxr_linenumber" name="260" href="#260">260</a> 
-<a class="jxr_linenumber" name="261" href="#261">261</a>     @Override
-<a class="jxr_linenumber" name="262" href="#262">262</a>     <strong class="jxr_keyword">public</strong> String toString() {
-<a class="jxr_linenumber" name="263" href="#263">263</a>       <strong class="jxr_keyword">return</strong> Objects.toStringHelper(<strong class="jxr_keyword">this</strong>.getClass())
-<a class="jxr_linenumber" name="264" href="#264">264</a>         .add(<span class="jxr_string">"sizeIndex"</span>, sizeIndex)
-<a class="jxr_linenumber" name="265" href="#265">265</a>         .add(<span class="jxr_string">"bucketSize"</span>, bucketSizes[sizeIndex])
-<a class="jxr_linenumber" name="266" href="#266">266</a>         .toString();
-<a class="jxr_linenumber" name="267" href="#267">267</a>     }
-<a class="jxr_linenumber" name="268" href="#268">268</a>   }
-<a class="jxr_linenumber" name="269" href="#269">269</a> 
-<a class="jxr_linenumber" name="270" href="#270">270</a>   <em class="jxr_comment">// Default block size is 64K, so we choose more sizes near 64K, you'd better</em>
-<a class="jxr_linenumber" name="271" href="#271">271</a>   <em class="jxr_comment">// reset it according to your cluster's block size distribution</em>
-<a class="jxr_linenumber" name="272" href="#272">272</a>   <em class="jxr_comment">// TODO Support the view of block size distribution statistics</em>
-<a class="jxr_linenumber" name="273" href="#273">273</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DEFAULT_BUCKET_SIZES[] = { 4 * 1024 + 1024, 8 * 1024 + 1024,
-<a class="jxr_linenumber" name="274" href="#274">274</a>       16 * 1024 + 1024, 32 * 1024 + 1024, 40 * 1024 + 1024, 48 * 1024 + 1024,
-<a class="jxr_linenumber" name="275" href="#275">275</a>       56 * 1024 + 1024, 64 * 1024 + 1024, 96 * 1024 + 1024, 128 * 1024 + 1024,
-<a class="jxr_linenumber" name="276" href="#276">276</a>       192 * 1024 + 1024, 256 * 1024 + 1024, 384 * 1024 + 1024,
-<a class="jxr_linenumber" name="277" href="#277">277</a>       512 * 1024 + 1024 };
-<a class="jxr_linenumber" name="278" href="#278">278</a> 
-<a class="jxr_linenumber" name="279" href="#279">279</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="280" href="#280">280</a> <em class="jxr_javadoccomment">   * Round up the given block size to bucket size, and get the corresponding</em>
-<a class="jxr_linenumber" name="281" href="#281">281</a> <em class="jxr_javadoccomment">   * BucketSizeInfo</em>
-<a class="jxr_linenumber" name="282" href="#282">282</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="283" href="#283">283</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> roundUpToBucketSizeInfo(<strong class="jxr_keyword">int</strong> blockSize) {
-<a class="jxr_linenumber" name="284" href="#284">284</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; bucketSizes.length; ++i)
-<a class="jxr_linenumber" name="285" href="#285">285</a>       <strong class="jxr_keyword">if</strong> (blockSize &lt;= bucketSizes[i])
-<a class="jxr_linenumber" name="286" href="#286">286</a>         <strong class="jxr_keyword">return</strong> bucketSizeInfos[i];
-<a class="jxr_linenumber" name="287" href="#287">287</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="288" href="#288">288</a>   }
-<a class="jxr_linenumber" name="289" href="#289">289</a> 
-<a class="jxr_linenumber" name="290" href="#290">290</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> FEWEST_ITEMS_IN_BUCKET = 4;
+<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
+<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.atomic.AtomicLong;
+<a class="jxr_linenumber" name="26" href="#26">26</a>  
+<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.collections.map.LinkedMap;
+<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.Log;
+<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
+<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.classification.InterfaceAudience;
+<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.BlockCacheKey;
+<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.CacheConfig;
+<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.BucketEntry;
+<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.codehaus.jackson.annotate.JsonIgnoreProperties;
+<a class="jxr_linenumber" name="35" href="#35">35</a>  
+<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> com.google.common.base.Objects;
+<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> com.google.common.base.Preconditions;
+<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> com.google.common.primitives.Ints;
+<a class="jxr_linenumber" name="39" href="#39">39</a>  
+<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * This class is used to allocate a block with specified size and free the block</em>
+<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * when evicting. It manages an array of buckets, each bucket is associated with</em>
+<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * a size and caches elements up to this size. For a completely empty bucket, this</em>
+<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * size could be re-specified dynamically.</em>
+<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * </em>
+<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * This class is not thread safe.</em>
+<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="48" href="#48">48</a>  @InterfaceAudience.Private
+<a class="jxr_linenumber" name="49" href="#49">49</a>  @JsonIgnoreProperties({<span class="jxr_string">"indexStatistics"</span>, <span class="jxr_string">"freeSize"</span>, <span class="jxr_string">"usedSize"</span>})
+<a class="jxr_linenumber" name="50" href="#50">50</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketAllocator</a> {
+<a class="jxr_linenumber" name="51" href="#51">51</a>    <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Log LOG = LogFactory.getLog(BucketAllocator.<strong class="jxr_keyword">class</strong>);
+<a class="jxr_linenumber" name="52" href="#52">52</a>  
+<a class="jxr_linenumber" name="53" href="#53">53</a>    @JsonIgnoreProperties({<span class="jxr_string">"completelyFree"</span>, <span class="jxr_string">"uninstantiated"</span>})
+<a class="jxr_linenumber" name="54" href="#54">54</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> {
+<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> baseOffset;
+<a class="jxr_linenumber" name="56" href="#56">56</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> itemAllocationSize, sizeIndex;
+<a class="jxr_linenumber" name="57" href="#57">57</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> itemCount;
+<a class="jxr_linenumber" name="58" href="#58">58</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> freeList[];
+<a class="jxr_linenumber" name="59" href="#59">59</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> freeCount, usedCount;
+<a class="jxr_linenumber" name="60" href="#60">60</a>  
+<a class="jxr_linenumber" name="61" href="#61">61</a>      <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a>(<strong class="jxr_keyword">long</strong> offset) {
+<a class="jxr_linenumber" name="62" href="#62">62</a>        baseOffset = offset;
+<a class="jxr_linenumber" name="63" href="#63">63</a>        sizeIndex = -1;
+<a class="jxr_linenumber" name="64" href="#64">64</a>      }
+<a class="jxr_linenumber" name="65" href="#65">65</a>  
+<a class="jxr_linenumber" name="66" href="#66">66</a>      <strong class="jxr_keyword">void</strong> reconfigure(<strong class="jxr_keyword">int</strong> sizeIndex, <strong class="jxr_keyword">int</strong>[] bucketSizes, <strong class="jxr_keyword">long</strong> bucketCapacity) {
+<a class="jxr_linenumber" name="67" href="#67">67</a>        Preconditions.checkElementIndex(sizeIndex, bucketSizes.length);
+<a class="jxr_linenumber" name="68" href="#68">68</a>        <strong class="jxr_keyword">this</strong>.sizeIndex = sizeIndex;
+<a class="jxr_linenumber" name="69" href="#69">69</a>        itemAllocationSize = bucketSizes[sizeIndex];
+<a class="jxr_linenumber" name="70" href="#70">70</a>        itemCount = (<strong class="jxr_keyword">int</strong>) (bucketCapacity / (<strong class="jxr_keyword">long</strong>) itemAllocationSize);
+<a class="jxr_linenumber" name="71" href="#71">71</a>        freeCount = itemCount;
+<a class="jxr_linenumber" name="72" href="#72">72</a>        usedCount = 0;
+<a class="jxr_linenumber" name="73" href="#73">73</a>        freeList = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[itemCount];
+<a class="jxr_linenumber" name="74" href="#74">74</a>        <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; freeCount; ++i)
+<a class="jxr_linenumber" name="75" href="#75">75</a>          freeList[i] = i;
+<a class="jxr_linenumber" name="76" href="#76">76</a>      }
+<a class="jxr_linenumber" name="77" href="#77">77</a>  
+<a class="jxr_linenumber" name="78" href="#78">78</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isUninstantiated() {
+<a class="jxr_linenumber" name="79" href="#79">79</a>        <strong class="jxr_keyword">return</strong> sizeIndex == -1;
+<a class="jxr_linenumber" name="80" href="#80">80</a>      }
+<a class="jxr_linenumber" name="81" href="#81">81</a>  
+<a class="jxr_linenumber" name="82" href="#82">82</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> sizeIndex() {
+<a class="jxr_linenumber" name="83" href="#83">83</a>        <strong class="jxr_keyword">return</strong> sizeIndex;
+<a class="jxr_linenumber" name="84" href="#84">84</a>      }
+<a class="jxr_linenumber" name="85" href="#85">85</a>  
+<a class="jxr_linenumber" name="86" href="#86">86</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getItemAllocationSize() {
+<a class="jxr_linenumber" name="87" href="#87">87</a>        <strong class="jxr_keyword">return</strong> itemAllocationSize;
+<a class="jxr_linenumber" name="88" href="#88">88</a>      }
+<a class="jxr_linenumber" name="89" href="#89">89</a>  
+<a class="jxr_linenumber" name="90" href="#90">90</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> hasFreeSpace() {
+<a class="jxr_linenumber" name="91" href="#91">91</a>        <strong class="jxr_keyword">return</strong> freeCount &gt; 0;
+<a class="jxr_linenumber" name="92" href="#92">92</a>      }
+<a class="jxr_linenumber" name="93" href="#93">93</a>  
+<a class="jxr_linenumber" name="94" href="#94">94</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isCompletelyFree() {
+<a class="jxr_linenumber" name="95" href="#95">95</a>        <strong class="jxr_keyword">return</strong> usedCount == 0;
+<a class="jxr_linenumber" name="96" href="#96">96</a>      }
+<a class="jxr_linenumber" name="97" href="#97">97</a>  
+<a class="jxr_linenumber" name="98" href="#98">98</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> freeCount() {
+<a class="jxr_linenumber" name="99" href="#99">99</a>        <strong class="jxr_keyword">return</strong> freeCount;
+<a class="jxr_linenumber" name="100" href="#100">100</a>     }
+<a class="jxr_linenumber" name="101" href="#101">101</a> 
+<a class="jxr_linenumber" name="102" href="#102">102</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> usedCount() {
+<a class="jxr_linenumber" name="103" href="#103">103</a>       <strong class="jxr_keyword">return</strong> usedCount;
+<a class="jxr_linenumber" name="104" href="#104">104</a>     }
+<a class="jxr_linenumber" name="105" href="#105">105</a> 
+<a class="jxr_linenumber" name="106" href="#106">106</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getFreeBytes() {
+<a class="jxr_linenumber" name="107" href="#107">107</a>       <strong class="jxr_keyword">return</strong> freeCount * itemAllocationSize;
+<a class="jxr_linenumber" name="108" href="#108">108</a>     }
+<a class="jxr_linenumber" name="109" href="#109">109</a> 
+<a class="jxr_linenumber" name="110" href="#110">110</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> getUsedBytes() {
+<a class="jxr_linenumber" name="111" href="#111">111</a>       <strong class="jxr_keyword">return</strong> usedCount * itemAllocationSize;
+<a class="jxr_linenumber" name="112" href="#112">112</a>     }
+<a class="jxr_linenumber" name="113" href="#113">113</a> 
+<a class="jxr_linenumber" name="114" href="#114">114</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getBaseOffset() {
+<a class="jxr_linenumber" name="115" href="#115">115</a>       <strong class="jxr_keyword">return</strong> baseOffset;
+<a class="jxr_linenumber" name="116" href="#116">116</a>     }
+<a class="jxr_linenumber" name="117" href="#117">117</a> 
+<a class="jxr_linenumber" name="118" href="#118">118</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment">     * Allocate a block in this bucket, return the offset representing the</em>
+<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment">     * position in physical space</em>
+<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">     * @return the offset in the IOEngine</em>
+<a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="123" href="#123">123</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> allocate() {
+<a class="jxr_linenumber" name="124" href="#124">124</a>       assert freeCount &gt; 0; <em class="jxr_comment">// Else should not have been called</em>
+<a class="jxr_linenumber" name="125" href="#125">125</a>       assert sizeIndex != -1;
+<a class="jxr_linenumber" name="126" href="#126">126</a>       ++usedCount;
+<a class="jxr_linenumber" name="127" href="#127">127</a>       <strong class="jxr_keyword">long</strong> offset = baseOffset + (freeList[--freeCount] * itemAllocationSize);
+<a class="jxr_linenumber" name="128" href="#128">128</a>       assert offset &gt;= 0;
+<a class="jxr_linenumber" name="129" href="#129">129</a>       <strong class="jxr_keyword">return</strong> offset;
+<a class="jxr_linenumber" name="130" href="#130">130</a>     }
+<a class="jxr_linenumber" name="131" href="#131">131</a> 
+<a class="jxr_linenumber" name="132" href="#132">132</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addAllocation(<strong class="jxr_keyword">long</strong> offset) <strong class="jxr_keyword">throws</strong> BucketAllocatorException {
+<a class="jxr_linenumber" name="133" href="#133">133</a>       offset -= baseOffset;
+<a class="jxr_linenumber" name="134" href="#134">134</a>       <strong class="jxr_keyword">if</strong> (offset &lt; 0 || offset % itemAllocationSize != 0)
+<a class="jxr_linenumber" name="135" href="#135">135</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(
+<a class="jxr_linenumber" name="136" href="#136">136</a>             <span class="jxr_string">"Attempt to add allocation for bad offset: "</span> + offset + <span class="jxr_string">" base="</span>
+<a class="jxr_linenumber" name="137" href="#137">137</a>                 + baseOffset + <span class="jxr_string">", bucket size="</span> + itemAllocationSize);
+<a class="jxr_linenumber" name="138" href="#138">138</a>       <strong class="jxr_keyword">int</strong> idx = (<strong class="jxr_keyword">int</strong>) (offset / itemAllocationSize);
+<a class="jxr_linenumber" name="139" href="#139">139</a>       <strong class="jxr_keyword">boolean</strong> matchFound = false;
+<a class="jxr_linenumber" name="140" href="#140">140</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; freeCount; ++i) {
+<a class="jxr_linenumber" name="141" href="#141">141</a>         <strong class="jxr_keyword">if</strong> (matchFound) freeList[i - 1] = freeList[i];
+<a class="jxr_linenumber" name="142" href="#142">142</a>         <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (freeList[i] == idx) matchFound = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="143" href="#143">143</a>       }
+<a class="jxr_linenumber" name="144" href="#144">144</a>       <strong class="jxr_keyword">if</strong> (!matchFound)
+<a class="jxr_linenumber" name="145" href="#145">145</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(<span class="jxr_string">"Couldn't find match for index "</span>
+<a class="jxr_linenumber" name="146" href="#146">146</a>             + idx + <span class="jxr_string">" in free list"</span>);
+<a class="jxr_linenumber" name="147" href="#147">147</a>       ++usedCount;
+<a class="jxr_linenumber" name="148" href="#148">148</a>       --freeCount;
+<a class="jxr_linenumber" name="149" href="#149">149</a>     }
+<a class="jxr_linenumber" name="150" href="#150">150</a> 
+<a class="jxr_linenumber" name="151" href="#151">151</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> free(<strong class="jxr_keyword">long</strong> offset) {
+<a class="jxr_linenumber" name="152" href="#152">152</a>       offset -= baseOffset;
+<a class="jxr_linenumber" name="153" href="#153">153</a>       assert offset &gt;= 0;
+<a class="jxr_linenumber" name="154" href="#154">154</a>       assert offset &lt; itemCount * itemAllocationSize;
+<a class="jxr_linenumber" name="155" href="#155">155</a>       assert offset % itemAllocationSize == 0;
+<a class="jxr_linenumber" name="156" href="#156">156</a>       assert usedCount &gt; 0;
+<a class="jxr_linenumber" name="157" href="#157">157</a>       assert freeCount &lt; itemCount; <em class="jxr_comment">// Else duplicate free</em>
+<a class="jxr_linenumber" name="158" href="#158">158</a>       <strong class="jxr_keyword">int</strong> item = (<strong class="jxr_keyword">int</strong>) (offset / (<strong class="jxr_keyword">long</strong>) itemAllocationSize);
+<a class="jxr_linenumber" name="159" href="#159">159</a>       assert !freeListContains(item);
+<a class="jxr_linenumber" name="160" href="#160">160</a>       --usedCount;
+<a class="jxr_linenumber" name="161" href="#161">161</a>       freeList[freeCount++] = item;
+<a class="jxr_linenumber" name="162" href="#162">162</a>     }
+<a class="jxr_linenumber" name="163" href="#163">163</a> 
+<a class="jxr_linenumber" name="164" href="#164">164</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> freeListContains(<strong class="jxr_keyword">int</strong> blockNo) {
+<a class="jxr_linenumber" name="165" href="#165">165</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; freeCount; ++i) {
+<a class="jxr_linenumber" name="166" href="#166">166</a>         <strong class="jxr_keyword">if</strong> (freeList[i] == blockNo) <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="167" href="#167">167</a>       }
+<a class="jxr_linenumber" name="168" href="#168">168</a>       <strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="169" href="#169">169</a>     }
+<a class="jxr_linenumber" name="170" href="#170">170</a>   }
+<a class="jxr_linenumber" name="171" href="#171">171</a> 
+<a class="jxr_linenumber" name="172" href="#172">172</a>   <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> {
+<a class="jxr_linenumber" name="173" href="#173">173</a>     <em class="jxr_comment">// Free bucket means it has space to allocate a block;</em>
+<a class="jxr_linenumber" name="174" href="#174">174</a>     <em class="jxr_comment">// Completely free bucket means it has no block.</em>
+<a class="jxr_linenumber" name="175" href="#175">175</a>     <strong class="jxr_keyword">private</strong> LinkedMap bucketList, freeBuckets, completelyFreeBuckets;
+<a class="jxr_linenumber" name="176" href="#176">176</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> sizeIndex;
+<a class="jxr_linenumber" name="177" href="#177">177</a> 
+<a class="jxr_linenumber" name="178" href="#178">178</a>     <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a>(<strong class="jxr_keyword">int</strong> sizeIndex) {
+<a class="jxr_linenumber" name="179" href="#179">179</a>       bucketList = <strong class="jxr_keyword">new</strong> LinkedMap();
+<a class="jxr_linenumber" name="180" href="#180">180</a>       freeBuckets = <strong class="jxr_keyword">new</strong> LinkedMap();
+<a class="jxr_linenumber" name="181" href="#181">181</a>       completelyFreeBuckets = <strong class="jxr_keyword">new</strong> LinkedMap();
+<a class="jxr_linenumber" name="182" href="#182">182</a>       <strong class="jxr_keyword">this</strong>.sizeIndex = sizeIndex;
+<a class="jxr_linenumber" name="183" href="#183">183</a>     }
+<a class="jxr_linenumber" name="184" href="#184">184</a> 
+<a class="jxr_linenumber" name="185" href="#185">185</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> instantiateBucket(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b) {
+<a class="jxr_linenumber" name="186" href="#186">186</a>       assert b.isUninstantiated() || b.isCompletelyFree();
+<a class="jxr_linenumber" name="187" href="#187">187</a>       b.reconfigure(sizeIndex, bucketSizes, bucketCapacity);
+<a class="jxr_linenumber" name="188" href="#188">188</a>       bucketList.put(b, b);
+<a class="jxr_linenumber" name="189" href="#189">189</a>       freeBuckets.put(b, b);
+<a class="jxr_linenumber" name="190" href="#190">190</a>       completelyFreeBuckets.put(b, b);
+<a class="jxr_linenumber" name="191" href="#191">191</a>     }
+<a class="jxr_linenumber" name="192" href="#192">192</a> 
+<a class="jxr_linenumber" name="193" href="#193">193</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> sizeIndex() {
+<a class="jxr_linenumber" name="194" href="#194">194</a>       <strong class="jxr_keyword">return</strong> sizeIndex;
+<a class="jxr_linenumber" name="195" href="#195">195</a>     }
+<a class="jxr_linenumber" name="196" href="#196">196</a> 
+<a class="jxr_linenumber" name="197" href="#197">197</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="198" href="#198">198</a> <em class="jxr_javadoccomment">     * Find a bucket to allocate a block</em>
+<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_javadoccomment">     * @return the offset in the IOEngine</em>
+<a class="jxr_linenumber" name="200" href="#200">200</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="201" href="#201">201</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> allocateBlock() {
+<a class="jxr_linenumber" name="202" href="#202">202</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="203" href="#203">203</a>       <strong class="jxr_keyword">if</strong> (freeBuckets.size() &gt; 0) {
+<a class="jxr_linenumber" name="204" href="#204">204</a>         <em class="jxr_comment">// Use up an existing one first...</em>
+<a class="jxr_linenumber" name="205" href="#205">205</a>         b = (Bucket) freeBuckets.lastKey();
+<a class="jxr_linenumber" name="206" href="#206">206</a>       }
+<a class="jxr_linenumber" name="207" href="#207">207</a>       <strong class="jxr_keyword">if</strong> (b == <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="208" href="#208">208</a>         b = grabGlobalCompletelyFreeBucket();
+<a class="jxr_linenumber" name="209" href="#209">209</a>         <strong class="jxr_keyword">if</strong> (b != <strong class="jxr_keyword">null</strong>) instantiateBucket(b);
+<a class="jxr_linenumber" name="210" href="#210">210</a>       }
+<a class="jxr_linenumber" name="211" href="#211">211</a>       <strong class="jxr_keyword">if</strong> (b == <strong class="jxr_keyword">null</strong>) <strong class="jxr_keyword">return</strong> -1;
+<a class="jxr_linenumber" name="212" href="#212">212</a>       <strong class="jxr_keyword">long</strong> result = b.allocate();
+<a class="jxr_linenumber" name="213" href="#213">213</a>       blockAllocated(b);
+<a class="jxr_linenumber" name="214" href="#214">214</a>       <strong class="jxr_keyword">return</strong> result;
+<a class="jxr_linenumber" name="215" href="#215">215</a>     }
+<a class="jxr_linenumber" name="216" href="#216">216</a> 
+<a class="jxr_linenumber" name="217" href="#217">217</a>     <strong class="jxr_keyword">void</strong> blockAllocated(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b) {
+<a class="jxr_linenumber" name="218" href="#218">218</a>       <strong class="jxr_keyword">if</strong> (!b.isCompletelyFree()) completelyFreeBuckets.remove(b);
+<a class="jxr_linenumber" name="219" href="#219">219</a>       <strong class="jxr_keyword">if</strong> (!b.hasFreeSpace()) freeBuckets.remove(b);
+<a class="jxr_linenumber" name="220" href="#220">220</a>     }
+<a class="jxr_linenumber" name="221" href="#221">221</a> 
+<a class="jxr_linenumber" name="222" href="#222">222</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> findAndRemoveCompletelyFreeBucket() {
+<a class="jxr_linenumber" name="223" href="#223">223</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="224" href="#224">224</a>       assert bucketList.size() &gt; 0;
+<a class="jxr_linenumber" name="225" href="#225">225</a>       <strong class="jxr_keyword">if</strong> (bucketList.size() == 1) {
+<a class="jxr_linenumber" name="226" href="#226">226</a>         <em class="jxr_comment">// So we never get complete starvation of a bucket for a size</em>
+<a class="jxr_linenumber" name="227" href="#227">227</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="228" href="#228">228</a>       }
+<a class="jxr_linenumber" name="229" href="#229">229</a> 
+<a class="jxr_linenumber" name="230" href="#230">230</a>       <strong class="jxr_keyword">if</strong> (completelyFreeBuckets.size() &gt; 0) {
+<a class="jxr_linenumber" name="231" href="#231">231</a>         b = (Bucket) completelyFreeBuckets.firstKey();
+<a class="jxr_linenumber" name="232" href="#232">232</a>         removeBucket(b);
+<a class="jxr_linenumber" name="233" href="#233">233</a>       }
+<a class="jxr_linenumber" name="234" href="#234">234</a>       <strong class="jxr_keyword">return</strong> b;
+<a class="jxr_linenumber" name="235" href="#235">235</a>     }
+<a class="jxr_linenumber" name="236" href="#236">236</a> 
+<a class="jxr_linenumber" name="237" href="#237">237</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> removeBucket(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b) {
+<a class="jxr_linenumber" name="238" href="#238">238</a>       assert b.isCompletelyFree();
+<a class="jxr_linenumber" name="239" href="#239">239</a>       bucketList.remove(b);
+<a class="jxr_linenumber" name="240" href="#240">240</a>       freeBuckets.remove(b);
+<a class="jxr_linenumber" name="241" href="#241">241</a>       completelyFreeBuckets.remove(b);
+<a class="jxr_linenumber" name="242" href="#242">242</a>     }
+<a class="jxr_linenumber" name="243" href="#243">243</a> 
+<a class="jxr_linenumber" name="244" href="#244">244</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> freeBlock(<a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b, <strong class="jxr_keyword">long</strong> offset) {
+<a class="jxr_linenumber" name="245" href="#245">245</a>       assert bucketList.containsKey(b);
+<a class="jxr_linenumber" name="246" href="#246">246</a>       <em class="jxr_comment">// else we shouldn't have anything to free...</em>
+<a class="jxr_linenumber" name="247" href="#247">247</a>       assert (!completelyFreeBuckets.containsKey(b));
+<a class="jxr_linenumber" name="248" href="#248">248</a>       b.free(offset);
+<a class="jxr_linenumber" name="249" href="#249">249</a>       <strong class="jxr_keyword">if</strong> (!freeBuckets.containsKey(b)) freeBuckets.put(b, b);
+<a class="jxr_linenumber" name="250" href="#250">250</a>       <strong class="jxr_keyword">if</strong> (b.isCompletelyFree()) completelyFreeBuckets.put(b, b);
+<a class="jxr_linenumber" name="251" href="#251">251</a>     }
+<a class="jxr_linenumber" name="252" href="#252">252</a> 
+<a class="jxr_linenumber" name="253" href="#253">253</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">IndexStatistics</a> statistics() {
+<a class="jxr_linenumber" name="254" href="#254">254</a>       <strong class="jxr_keyword">long</strong> free = 0, used = 0;
+<a class="jxr_linenumber" name="255" href="#255">255</a>       <strong class="jxr_keyword">for</strong> (Object obj : bucketList.keySet()) {
+<a class="jxr_linenumber" name="256" href="#256">256</a>         <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = (Bucket) obj;
+<a class="jxr_linenumber" name="257" href="#257">257</a>         free += b.freeCount();
+<a class="jxr_linenumber" name="258" href="#258">258</a>         used += b.usedCount();
+<a class="jxr_linenumber" name="259" href="#259">259</a>       }
+<a class="jxr_linenumber" name="260" href="#260">260</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">IndexStatistics</a>(free, used, bucketSizes[sizeIndex]);
+<a class="jxr_linenumber" name="261" href="#261">261</a>     }
+<a class="jxr_linenumber" name="262" href="#262">262</a> 
+<a class="jxr_linenumber" name="263" href="#263">263</a>     @Override
+<a class="jxr_linenumber" name="264" href="#264">264</a>     <strong class="jxr_keyword">public</strong> String toString() {
+<a class="jxr_linenumber" name="265" href="#265">265</a>       <strong class="jxr_keyword">return</strong> Objects.toStringHelper(<strong class="jxr_keyword">this</strong>.getClass())
+<a class="jxr_linenumber" name="266" href="#266">266</a>         .add(<span class="jxr_string">"sizeIndex"</span>, sizeIndex)
+<a class="jxr_linenumber" name="267" href="#267">267</a>         .add(<span class="jxr_string">"bucketSize"</span>, bucketSizes[sizeIndex])
+<a class="jxr_linenumber" name="268" href="#268">268</a>         .toString();
+<a class="jxr_linenumber" name="269" href="#269">269</a>     }
+<a class="jxr_linenumber" name="270" href="#270">270</a>   }
+<a class="jxr_linenumber" name="271" href="#271">271</a> 
+<a class="jxr_linenumber" name="272" href="#272">272</a>   <em class="jxr_comment">// Default block size is 64K, so we choose more sizes near 64K, you'd better</em>
+<a class="jxr_linenumber" name="273" href="#273">273</a>   <em class="jxr_comment">// reset it according to your cluster's block size distribution</em>
+<a class="jxr_linenumber" name="274" href="#274">274</a>   <em class="jxr_comment">// TODO Support the view of block size distribution statistics</em>
+<a class="jxr_linenumber" name="275" href="#275">275</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DEFAULT_BUCKET_SIZES[] = { 4 * 1024 + 1024, 8 * 1024 + 1024,
+<a class="jxr_linenumber" name="276" href="#276">276</a>       16 * 1024 + 1024, 32 * 1024 + 1024, 40 * 1024 + 1024, 48 * 1024 + 1024,
+<a class="jxr_linenumber" name="277" href="#277">277</a>       56 * 1024 + 1024, 64 * 1024 + 1024, 96 * 1024 + 1024, 128 * 1024 + 1024,
+<a class="jxr_linenumber" name="278" href="#278">278</a>       192 * 1024 + 1024, 256 * 1024 + 1024, 384 * 1024 + 1024,
+<a class="jxr_linenumber" name="279" href="#279">279</a>       512 * 1024 + 1024 };
+<a class="jxr_linenumber" name="280" href="#280">280</a> 
+<a class="jxr_linenumber" name="281" href="#281">281</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="282" href="#282">282</a> <em class="jxr_javadoccomment">   * Round up the given block size to bucket size, and get the corresponding</em>
+<a class="jxr_linenumber" name="283" href="#283">283</a> <em class="jxr_javadoccomment">   * BucketSizeInfo</em>
+<a class="jxr_linenumber" name="284" href="#284">284</a> <em class="jxr_javadoccomment">   */</em>
+<a class="jxr_linenumber" name="285" href="#285">285</a>   <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> roundUpToBucketSizeInfo(<strong class="jxr_keyword">int</strong> blockSize) {
+<a class="jxr_linenumber" name="286" href="#286">286</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; bucketSizes.length; ++i)
+<a class="jxr_linenumber" name="287" href="#287">287</a>       <strong class="jxr_keyword">if</strong> (blockSize &lt;= bucketSizes[i])
+<a class="jxr_linenumber" name="288" href="#288">288</a>         <strong class="jxr_keyword">return</strong> bucketSizeInfos[i];
+<a class="jxr_linenumber" name="289" href="#289">289</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="290" href="#290">290</a>   }
 <a class="jxr_linenumber" name="291" href="#291">291</a> 
-<a class="jxr_linenumber" name="292" href="#292">292</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>[] bucketSizes;
-<a class="jxr_linenumber" name="293" href="#293">293</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> bigItemSize;
-<a class="jxr_linenumber" name="294" href="#294">294</a>   <em class="jxr_comment">// The capacity size for each bucket</em>
-<a class="jxr_linenumber" name="295" href="#295">295</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> bucketCapacity;
-<a class="jxr_linenumber" name="296" href="#296">296</a>   <strong class="jxr_keyword">private</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a>[] buckets;
-<a class="jxr_linenumber" name="297" href="#297">297</a>   <strong class="jxr_keyword">private</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a>[] bucketSizeInfos;
-<a class="jxr_linenumber" name="298" href="#298">298</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> totalSize;
-<a class="jxr_linenumber" name="299" href="#299">299</a>   <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong> usedSize = 0;
-<a class="jxr_linenumber" name="300" href="#300">300</a> 
-<a class="jxr_linenumber" name="301" href="#301">301</a>   <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketAllocator</a>(<strong class="jxr_keyword">long</strong> availableSpace, <strong class="jxr_keyword">int</strong>[] bucketSizes)
-<a class="jxr_linenumber" name="302" href="#302">302</a>       <strong class="jxr_keyword">throws</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a> {
-<a class="jxr_linenumber" name="303" href="#303">303</a>     <strong class="jxr_keyword">this</strong>.bucketSizes = bucketSizes == <strong class="jxr_keyword">null</strong> ? DEFAULT_BUCKET_SIZES : bucketSizes;
-<a class="jxr_linenumber" name="304" href="#304">304</a>     Arrays.sort(<strong class="jxr_keyword">this</strong>.bucketSizes);
-<a class="jxr_linenumber" name="305" href="#305">305</a>     <strong class="jxr_keyword">this</strong>.bigItemSize = Ints.max(<strong class="jxr_keyword">this</strong>.bucketSizes);
-<a class="jxr_linenumber" name="306" href="#306">306</a>     <strong class="jxr_keyword">this</strong>.bucketCapacity = FEWEST_ITEMS_IN_BUCKET * bigItemSize;
-<a class="jxr_linenumber" name="307" href="#307">307</a>     buckets = <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a>[(<strong class="jxr_keyword">int</strong>) (availableSpace / bucketCapacity)];
-<a class="jxr_linenumber" name="308" href="#308">308</a>     <strong class="jxr_keyword">if</strong> (buckets.length &lt; <strong class="jxr_keyword">this</strong>.bucketSizes.length)
-<a class="jxr_linenumber" name="309" href="#309">309</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(
-<a class="jxr_linenumber" name="310" href="#310">310</a>           <span class="jxr_string">"Bucket allocator size too small - must have room for at least "</span>
-<a class="jxr_linenumber" name="311" href="#311">311</a>               + <strong class="jxr_keyword">this</strong>.bucketSizes.length + <span class="jxr_string">" buckets"</span>);
-<a class="jxr_linenumber" name="312" href="#312">312</a>     bucketSizeInfos = <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a>[<strong class="jxr_keyword">this</strong>.bucketSizes.length];
-<a class="jxr_linenumber" name="313" href="#313">313</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; <strong class="jxr_keyword">this</strong>.bucketSizes.length; ++i) {
-<a class="jxr_linenumber" name="314" href="#314">314</a>       bucketSizeInfos[i] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a>(i);
-<a class="jxr_linenumber" name="315" href="#315">315</a>     }
-<a class="jxr_linenumber" name="316" href="#316">316</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; buckets.length; ++i) {
-<a class="jxr_linenumber" name="317" href="#317">317</a>       buckets[i] = <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a>(bucketCapacity * i);
-<a class="jxr_linenumber" name="318" href="#318">318</a>       bucketSizeInfos[i &lt; <strong class="jxr_keyword">this</strong>.bucketSizes.length ? i : <strong class="jxr_keyword">this</strong>.bucketSizes.length - 1]
-<a class="jxr_linenumber" name="319" href="#319">319</a>           .instantiateBucket(buckets[i]);
-<a class="jxr_linenumber" name="320" href="#320">320</a>     }
-<a class="jxr_linenumber" name="321" href="#321">321</a>     <strong class="jxr_keyword">this</strong>.totalSize = ((<strong class="jxr_keyword">long</strong>) buckets.length) * bucketCapacity;
-<a class="jxr_linenumber" name="322" href="#322">322</a>   }
-<a class="jxr_linenumber" name="323" href="#323">323</a> 
-<a class="jxr_linenumber" name="324" href="#324">324</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="325" href="#325">325</a> <em class="jxr_javadoccomment">   * Rebuild the allocator's data structures from a persisted map.</em>
-<a class="jxr_linenumber" name="326" href="#326">326</a> <em class="jxr_javadoccomment">   * @param availableSpace capacity of cache</em>
-<a class="jxr_linenumber" name="327" href="#327">327</a> <em class="jxr_javadoccomment">   * @param map A map stores the block key and BucketEntry(block's meta data</em>
-<a class="jxr_linenumber" name="328" href="#328">328</a> <em class="jxr_javadoccomment">   *          like offset, length)</em>
-<a class="jxr_linenumber" name="329" href="#329">329</a> <em class="jxr_javadoccomment">   * @param realCacheSize cached data size statistics for bucket cache</em>
-<a class="jxr_linenumber" name="330" href="#330">330</a> <em class="jxr_javadoccomment">   * @throws BucketAllocatorException</em>
-<a class="jxr_linenumber" name="331" href="#331">331</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="332" href="#332">332</a>   <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketAllocator</a>(<strong class="jxr_keyword">long</strong> availableSpace, <strong class="jxr_keyword">int</strong>[] bucketSizes, Map&lt;BlockCacheKey, BucketEntry&gt; map,
-<a class="jxr_linenumber" name="333" href="#333">333</a>       AtomicLong realCacheSize) <strong class="jxr_keyword">throws</strong> BucketAllocatorException {
-<a class="jxr_linenumber" name="334" href="#334">334</a>     <strong class="jxr_keyword">this</strong>(availableSpace, bucketSizes);
-<a class="jxr_linenumber" name="335" href="#335">335</a> 
-<a class="jxr_linenumber" name="336" href="#336">336</a>     <em class="jxr_comment">// each bucket has an offset, sizeindex. probably the buckets are too big</em>
-<a class="jxr_linenumber" name="337" href="#337">337</a>     <em class="jxr_comment">// in our default state. so what we do is reconfigure them according to what</em>
-<a class="jxr_linenumber" name="338" href="#338">338</a>     <em class="jxr_comment">// we've found. we can only reconfigure each bucket once; if more than once,</em>
-<a class="jxr_linenumber" name="339" href="#339">339</a>     <em class="jxr_comment">// we know there's a bug, so we just log the info, throw, and start again...</em>
-<a class="jxr_linenumber" name="340" href="#340">340</a>     <strong class="jxr_keyword">boolean</strong>[] reconfigured = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">boolean</strong>[buckets.length];
-<a class="jxr_linenumber" name="341" href="#341">341</a>     <strong class="jxr_keyword">for</strong> (Map.Entry&lt;BlockCacheKey, BucketEntry&gt; entry : map.entrySet()) {
-<a class="jxr_linenumber" name="342" href="#342">342</a>       <strong class="jxr_keyword">long</strong> foundOffset = entry.getValue().offset();
-<a class="jxr_linenumber" name="343" href="#343">343</a>       <strong class="jxr_keyword">int</strong> foundLen = entry.getValue().getLength();
-<a class="jxr_linenumber" name="344" href="#344">344</a>       <strong class="jxr_keyword">int</strong> bucketSizeIndex = -1;
-<a class="jxr_linenumber" name="345" href="#345">345</a>       <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; bucketSizes.length; ++i) {
-<a class="jxr_linenumber" name="346" href="#346">346</a>         <strong class="jxr_keyword">if</strong> (foundLen &lt;= bucketSizes[i]) {
-<a class="jxr_linenumber" name="347" href="#347">347</a>           bucketSizeIndex = i;
-<a class="jxr_linenumber" name="348" href="#348">348</a>           <strong class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="349" href="#349">349</a>         }
-<a class="jxr_linenumber" name="350" href="#350">350</a>       }
-<a class="jxr_linenumber" name="351" href="#351">351</a>       <strong class="jxr_keyword">if</strong> (bucketSizeIndex == -1) {
-<a class="jxr_linenumber" name="352" href="#352">352</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(
-<a class="jxr_linenumber" name="353" href="#353">353</a>             <span class="jxr_string">"Can't match bucket size for the block with size "</span> + foundLen);
-<a class="jxr_linenumber" name="354" href="#354">354</a>       }
-<a class="jxr_linenumber" name="355" href="#355">355</a>       <strong class="jxr_keyword">int</strong> bucketNo = (<strong class="jxr_keyword">int</strong>) (foundOffset / bucketCapacity);
-<a class="jxr_linenumber" name="356" href="#356">356</a>       <strong class="jxr_keyword">if</strong> (bucketNo &lt; 0 || bucketNo &gt;= buckets.length)
-<a class="jxr_linenumber" name="357" href="#357">357</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(<span class="jxr_string">"Can't find bucket "</span> + bucketNo
-<a class="jxr_linenumber" name="358" href="#358">358</a>             + <span class="jxr_string">", total buckets="</span> + buckets.length
-<a class="jxr_linenumber" name="359" href="#359">359</a>             + <span class="jxr_string">"; did you shrink the cache?"</span>);
-<a class="jxr_linenumber" name="360" href="#360">360</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = buckets[bucketNo];
-<a class="jxr_linenumber" name="361" href="#361">361</a>       <strong class="jxr_keyword">if</strong> (reconfigured[bucketNo]) {
-<a class="jxr_linenumber" name="362" href="#362">362</a>         <strong class="jxr_keyword">if</strong> (b.sizeIndex() != bucketSizeIndex)
-<a class="jxr_linenumber" name="363" href="#363">363</a>           <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(
-<a class="jxr_linenumber" name="364" href="#364">364</a>               <span class="jxr_string">"Inconsistent allocation in bucket map;"</span>);
-<a class="jxr_linenumber" name="365" href="#365">365</a>       } <strong class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="366" href="#366">366</a>         <strong class="jxr_keyword">if</strong> (!b.isCompletelyFree())
-<a class="jxr_linenumber" name="367" href="#367">367</a>           <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(<span class="jxr_string">"Reconfiguring bucket "</span>
-<a class="jxr_linenumber" name="368" href="#368">368</a>               + bucketNo + <span class="jxr_string">" but it's already allocated; corrupt data"</span>);
-<a class="jxr_linenumber" name="369" href="#369">369</a>         <em class="jxr_comment">// Need to remove the bucket from whichever list it's currently in at</em>
-<a class="jxr_linenumber" name="370" href="#370">370</a>         <em class="jxr_comment">// the moment...</em>
-<a class="jxr_linenumber" name="371" href="#371">371</a>         <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> bsi = bucketSizeInfos[bucketSizeIndex];
-<a class="jxr_linenumber" name="372" href="#372">372</a>         <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> oldbsi = bucketSizeInfos[b.sizeIndex()];
-<a class="jxr_linenumber" name="373" href="#373">373</a>         oldbsi.removeBucket(b);
-<a class="jxr_linenumber" name="374" href="#374">374</a>         bsi.instantiateBucket(b);
-<a class="jxr_linenumber" name="375" href="#375">375</a>         reconfigured[bucketNo] = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="376" href="#376">376</a>       }
-<a class="jxr_linenumber" name="377" href="#377">377</a>       realCacheSize.addAndGet(foundLen);
-<a class="jxr_linenumber" name="378" href="#378">378</a>       buckets[bucketNo].addAllocation(foundOffset);
-<a class="jxr_linenumber" name="379" href="#379">379</a>       usedSize += buckets[bucketNo].getItemAllocationSize();
-<a class="jxr_linenumber" name="380" href="#380">380</a>       bucketSizeInfos[bucketSizeIndex].blockAllocated(b);
-<a class="jxr_linenumber" name="381" href="#381">381</a>     }
-<a class="jxr_linenumber" name="382" href="#382">382</a>   }
-<a class="jxr_linenumber" name="383" href="#383">383</a> 
-<a class="jxr_linenumber" name="384" href="#384">384</a>   <strong class="jxr_keyword">public</strong> String toString() {
-<a class="jxr_linenumber" name="385" href="#385">385</a>     StringBuilder sb = <strong class="jxr_keyword">new</strong> StringBuilder(1024);
-<a class="jxr_linenumber" name="386" href="#386">386</a>     <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; buckets.length; ++i) {
-<a class="jxr_linenumber" name="387" href="#387">387</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">Bucket</a> b = buckets[i];
-<a class="jxr_linenumber" name="388" href="#388">388</a>       <strong class="jxr_keyword">if</strong> (i &gt; 0) sb.append(<span class="jxr_string">", "</span>);
-<a class="jxr_linenumber" name="389" href="#389">389</a>       sb.append(<span class="jxr_string">"bucket."</span>).append(i).append(<span class="jxr_string">": size="</span>).append(b.getItemAllocationSize());
-<a class="jxr_linenumber" name="390" href="#390">390</a>       sb.append(<span class="jxr_string">", freeCount="</span>).append(b.freeCount()).append(<span class="jxr_string">", used="</span>).append(b.usedCount());
-<a class="jxr_linenumber" name="391" href="#391">391</a>     }
-<a class="jxr_linenumber" name="392" href="#392">392</a>     <strong class="jxr_keyword">return</strong> sb.toString();
-<a class="jxr_linenumber" name="393" href="#393">393</a>   }
-<a class="jxr_linenumber" name="394" href="#394">394</a> 
-<a class="jxr_linenumber" name="395" href="#395">395</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getUsedSize() {
-<a class="jxr_linenumber" name="396" href="#396">396</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.usedSize;
-<a class="jxr_linenumber" name="397" href="#397">397</a>   }
-<a class="jxr_linenumber" name="398" href="#398">398</a> 
-<a class="jxr_linenumber" name="399" href="#399">399</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getFreeSize() {
-<a class="jxr_linenumber" name="400" href="#400">400</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.totalSize - getUsedSize();
-<a class="jxr_linenumber" name="401" href="#401">401</a>   }
-<a class="jxr_linenumber" name="402" href="#402">402</a> 
-<a class="jxr_linenumber" name="403" href="#403">403</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong> getTotalSize() {
-<a class="jxr_linenumber" name="404" href="#404">404</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.totalSize;
-<a class="jxr_linenumber" name="405" href="#405">405</a>   }
-<a class="jxr_linenumber" name="406" href="#406">406</a> 
-<a class="jxr_linenumber" name="407" href="#407">407</a>   <em class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="408" href="#408">408</a> <em class="jxr_javadoccomment">   * Allocate a block with specified size. Return the offset</em>
-<a class="jxr_linenumber" name="409" href="#409">409</a> <em class="jxr_javadoccomment">   * @param blockSize size of block</em>
-<a class="jxr_linenumber" name="410" href="#410">410</a> <em class="jxr_javadoccomment">   * @throws BucketAllocatorException</em>
-<a class="jxr_linenumber" name="411" href="#411">411</a> <em class="jxr_javadoccomment">   * @throws CacheFullException</em>
-<a class="jxr_linenumber" name="412" href="#412">412</a> <em class="jxr_javadoccomment">   * @return the offset in the IOEngine</em>
-<a class="jxr_linenumber" name="413" href="#413">413</a> <em class="jxr_javadoccomment">   */</em>
-<a class="jxr_linenumber" name="414" href="#414">414</a>   <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">long</strong> allocateBlock(<strong class="jxr_keyword">int</strong> blockSize) <strong class="jxr_keyword">throws</strong> CacheFullException,
-<a class="jxr_linenumber" name="415" href="#415">415</a>       <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a> {
-<a class="jxr_linenumber" name="416" href="#416">416</a>     assert blockSize &gt; 0;
-<a class="jxr_linenumber" name="417" href="#417">417</a>     <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html">BucketSizeInfo</a> bsi = roundUpToBucketSizeInfo(blockSize);
-<a class="jxr_linenumber" name="418" href="#418">418</a>     <strong class="jxr_keyword">if</strong> (bsi == <strong class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="419" href="#419">419</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html">BucketAllocatorException</a>(<span class="jxr_string">"Allocation too big size="</span> + blockSize +
-<a class="jxr_linenumber" name="420" href="#420">420</a>         <span class="jxr_string">"; adjust BucketCache sizes "</span> + CacheConfig.BUCKET_CACHE_BUCKETS_KEY +
-<a class="jxr_linenumber" name="421" href="#421">421</a>         <span class="jxr_string">" to accomodate if size seems reasonable and you want it cached."</span>);
-<a class="jxr_linenumber" name="422" href="#422">422</a>     }
-<a class="jxr_linenumber" name="423" href="#423">423</a>     <strong class="jxr_keyword">long</strong> offset = bsi.allocateBlock();
-<a class="jxr_linenumber" name="424" href="#424">424</a> 
-<a class="jxr_linenumber" name="425" href="#425">425</a>     <em class="jxr_comment">// Ask caller to free up space and try again!</em>
-<a class="jxr_linenumber" name="426" href="#426">426</a>     <strong class="jxr_keyword">if</strong> (offset &lt; 0)
-<a class="jxr_linenumber" name="427" href="#427">427</a>       <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/CacheFullException.html">CacheFullException</a>(blockSize, bsi.sizeIndex());
-<a class="jxr_linenumber" name="428" href="#428">428</a>     usedSize += bucketSizes[bsi.sizeIndex()];
-<a class="jxr_linenumber" name="429" href="#429">429</a>     <strong class="jxr_keyword">return</strong> offset;
-<a class="jxr_linenumber" name="430" href="#430">430</a>   }
-<a class="jxr_linenumber" name="431" href="#431">431</a> 

[... 396 lines stripped ...]



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