hbase-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From git-site-r...@apache.org
Subject [19/30] hbase-site git commit: Published site at .
Date Fri, 18 Aug 2017 15:06:46 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/cef8af03/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html
index ecd285a..976c905 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html
@@ -26,439 +26,430 @@
 <span class="sourceLineNo">018</span> */<a name="line.18"></a>
 <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.regionserver;<a name="line.19"></a>
 <span class="sourceLineNo">020</span><a name="line.20"></a>
-<span class="sourceLineNo">021</span>import java.lang.ref.WeakReference;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import java.util.Iterator;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.util.Map;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.util.Set;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import java.util.concurrent.BlockingQueue;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.concurrent.Executors;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.concurrent.ScheduledExecutorService;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.concurrent.TimeUnit;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.32"></a>
-<span class="sourceLineNo">033</span><a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.commons.logging.Log;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.commons.logging.LogFactory;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.regionserver.HeapMemoryManager.HeapMemoryTuneObserver;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.util.StringUtils;<a name="line.39"></a>
-<span class="sourceLineNo">040</span><a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.shaded.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.42"></a>
-<span class="sourceLineNo">043</span><a name="line.43"></a>
-<span class="sourceLineNo">044</span>/**<a name="line.44"></a>
-<span class="sourceLineNo">045</span> * Does the management of memstoreLAB chunk creations. A monotonically incrementing id is associated<a name="line.45"></a>
-<span class="sourceLineNo">046</span> * with every chunk<a name="line.46"></a>
-<span class="sourceLineNo">047</span> */<a name="line.47"></a>
-<span class="sourceLineNo">048</span>@InterfaceAudience.Private<a name="line.48"></a>
-<span class="sourceLineNo">049</span>public class ChunkCreator {<a name="line.49"></a>
-<span class="sourceLineNo">050</span>  private static final Log LOG = LogFactory.getLog(ChunkCreator.class);<a name="line.50"></a>
-<span class="sourceLineNo">051</span>  // monotonically increasing chunkid<a name="line.51"></a>
-<span class="sourceLineNo">052</span>  private AtomicInteger chunkID = new AtomicInteger(1);<a name="line.52"></a>
-<span class="sourceLineNo">053</span>  // maps the chunk against the monotonically increasing chunk id. We need to preserve the<a name="line.53"></a>
-<span class="sourceLineNo">054</span>  // natural ordering of the key<a name="line.54"></a>
-<span class="sourceLineNo">055</span>  // CellChunkMap creation should convert the weak ref to hard reference<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
-<span class="sourceLineNo">057</span>  // chunk id of each chunk is the first integer written on each chunk,<a name="line.57"></a>
-<span class="sourceLineNo">058</span>  // the header size need to be changed in case chunk id size is changed<a name="line.58"></a>
-<span class="sourceLineNo">059</span>  public static final int SIZEOF_CHUNK_HEADER = Bytes.SIZEOF_INT;<a name="line.59"></a>
-<span class="sourceLineNo">060</span><a name="line.60"></a>
-<span class="sourceLineNo">061</span>  // An object pointed by a weak reference can be garbage collected, in opposite to an object<a name="line.61"></a>
-<span class="sourceLineNo">062</span>  // referenced by a strong (regular) reference. Every chunk created via ChunkCreator is referenced<a name="line.62"></a>
-<span class="sourceLineNo">063</span>  // from either weakChunkIdMap or strongChunkIdMap.<a name="line.63"></a>
-<span class="sourceLineNo">064</span>  // Upon chunk C creation, C's ID is mapped into weak reference to C, in order not to disturb C's<a name="line.64"></a>
-<span class="sourceLineNo">065</span>  // GC in case all other reference to C are going to be removed.<a name="line.65"></a>
-<span class="sourceLineNo">066</span>  // When chunk C is referenced from CellChunkMap (via C's ID) it is possible to GC the chunk C.<a name="line.66"></a>
-<span class="sourceLineNo">067</span>  // To avoid that upon inserting C into CellChunkMap, C's ID is mapped into strong (regular)<a name="line.67"></a>
-<span class="sourceLineNo">068</span>  // reference to C.<a name="line.68"></a>
-<span class="sourceLineNo">069</span><a name="line.69"></a>
-<span class="sourceLineNo">070</span>  // map that doesn't influence GC<a name="line.70"></a>
-<span class="sourceLineNo">071</span>  private Map&lt;Integer, WeakReference&lt;Chunk&gt;&gt; weakChunkIdMap =<a name="line.71"></a>
-<span class="sourceLineNo">072</span>      new ConcurrentHashMap&lt;Integer, WeakReference&lt;Chunk&gt;&gt;();<a name="line.72"></a>
-<span class="sourceLineNo">073</span><a name="line.73"></a>
-<span class="sourceLineNo">074</span>  // map that keeps chunks from garbage collection<a name="line.74"></a>
-<span class="sourceLineNo">075</span>  private Map&lt;Integer, Chunk&gt; strongChunkIdMap = new ConcurrentHashMap&lt;Integer, Chunk&gt;();<a name="line.75"></a>
-<span class="sourceLineNo">076</span><a name="line.76"></a>
-<span class="sourceLineNo">077</span>  private final int chunkSize;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>  private final boolean offheap;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>  @VisibleForTesting<a name="line.79"></a>
-<span class="sourceLineNo">080</span>  static ChunkCreator INSTANCE;<a name="line.80"></a>
-<span class="sourceLineNo">081</span>  @VisibleForTesting<a name="line.81"></a>
-<span class="sourceLineNo">082</span>  static boolean chunkPoolDisabled = false;<a name="line.82"></a>
-<span class="sourceLineNo">083</span>  private MemStoreChunkPool pool;<a name="line.83"></a>
-<span class="sourceLineNo">084</span><a name="line.84"></a>
-<span class="sourceLineNo">085</span>  @VisibleForTesting<a name="line.85"></a>
-<span class="sourceLineNo">086</span>  ChunkCreator(int chunkSize, boolean offheap, long globalMemStoreSize, float poolSizePercentage,<a name="line.86"></a>
-<span class="sourceLineNo">087</span>      float initialCountPercentage, HeapMemoryManager heapMemoryManager) {<a name="line.87"></a>
-<span class="sourceLineNo">088</span>    this.chunkSize = chunkSize;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>    this.offheap = offheap;<a name="line.89"></a>
-<span class="sourceLineNo">090</span>    this.pool = initializePool(globalMemStoreSize, poolSizePercentage, initialCountPercentage);<a name="line.90"></a>
-<span class="sourceLineNo">091</span>    if (heapMemoryManager != null &amp;&amp; this.pool != null) {<a name="line.91"></a>
-<span class="sourceLineNo">092</span>      // Register with Heap Memory manager<a name="line.92"></a>
-<span class="sourceLineNo">093</span>      heapMemoryManager.registerTuneObserver(this.pool);<a name="line.93"></a>
-<span class="sourceLineNo">094</span>    }<a name="line.94"></a>
-<span class="sourceLineNo">095</span>  }<a name="line.95"></a>
-<span class="sourceLineNo">096</span><a name="line.96"></a>
-<span class="sourceLineNo">097</span>  /**<a name="line.97"></a>
-<span class="sourceLineNo">098</span>   * Initializes the instance of MSLABChunkCreator<a name="line.98"></a>
-<span class="sourceLineNo">099</span>   * @param chunkSize the chunkSize<a name="line.99"></a>
-<span class="sourceLineNo">100</span>   * @param offheap indicates if the chunk is to be created offheap or not<a name="line.100"></a>
-<span class="sourceLineNo">101</span>   * @param globalMemStoreSize  the global memstore size<a name="line.101"></a>
-<span class="sourceLineNo">102</span>   * @param poolSizePercentage pool size percentage<a name="line.102"></a>
-<span class="sourceLineNo">103</span>   * @param initialCountPercentage the initial count of the chunk pool if any<a name="line.103"></a>
-<span class="sourceLineNo">104</span>   * @param heapMemoryManager the heapmemory manager<a name="line.104"></a>
-<span class="sourceLineNo">105</span>   * @return singleton MSLABChunkCreator<a name="line.105"></a>
-<span class="sourceLineNo">106</span>   */<a name="line.106"></a>
-<span class="sourceLineNo">107</span>  @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "LI_LAZY_INIT_STATIC",<a name="line.107"></a>
-<span class="sourceLineNo">108</span>      justification = "Method is called by single thread at the starting of RS")<a name="line.108"></a>
-<span class="sourceLineNo">109</span>  @VisibleForTesting<a name="line.109"></a>
-<span class="sourceLineNo">110</span>  public static ChunkCreator initialize(int chunkSize, boolean offheap, long globalMemStoreSize,<a name="line.110"></a>
-<span class="sourceLineNo">111</span>      float poolSizePercentage, float initialCountPercentage, HeapMemoryManager heapMemoryManager) {<a name="line.111"></a>
-<span class="sourceLineNo">112</span>    if (INSTANCE != null) return INSTANCE;<a name="line.112"></a>
-<span class="sourceLineNo">113</span>    INSTANCE = new ChunkCreator(chunkSize, offheap, globalMemStoreSize, poolSizePercentage,<a name="line.113"></a>
-<span class="sourceLineNo">114</span>        initialCountPercentage, heapMemoryManager);<a name="line.114"></a>
-<span class="sourceLineNo">115</span>    return INSTANCE;<a name="line.115"></a>
-<span class="sourceLineNo">116</span>  }<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span>  static ChunkCreator getInstance() {<a name="line.118"></a>
-<span class="sourceLineNo">119</span>    return INSTANCE;<a name="line.119"></a>
-<span class="sourceLineNo">120</span>  }<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span>  /**<a name="line.122"></a>
-<span class="sourceLineNo">123</span>   * Creates and inits a chunk.<a name="line.123"></a>
-<span class="sourceLineNo">124</span>   * @return the chunk that was initialized<a name="line.124"></a>
-<span class="sourceLineNo">125</span>   */<a name="line.125"></a>
-<span class="sourceLineNo">126</span>  Chunk getChunk() {<a name="line.126"></a>
-<span class="sourceLineNo">127</span>    Chunk chunk = null;<a name="line.127"></a>
-<span class="sourceLineNo">128</span>    if (pool != null) {<a name="line.128"></a>
-<span class="sourceLineNo">129</span>      //  the pool creates the chunk internally. The chunk#init() call happens here<a name="line.129"></a>
-<span class="sourceLineNo">130</span>      chunk = this.pool.getChunk();<a name="line.130"></a>
-<span class="sourceLineNo">131</span>      // the pool has run out of maxCount<a name="line.131"></a>
-<span class="sourceLineNo">132</span>      if (chunk == null) {<a name="line.132"></a>
-<span class="sourceLineNo">133</span>        if (LOG.isTraceEnabled()) {<a name="line.133"></a>
-<span class="sourceLineNo">134</span>          LOG.trace("The chunk pool is full. Reached maxCount= " + this.pool.getMaxCount()<a name="line.134"></a>
-<span class="sourceLineNo">135</span>              + ". Creating chunk onheap.");<a name="line.135"></a>
-<span class="sourceLineNo">136</span>        }<a name="line.136"></a>
-<span class="sourceLineNo">137</span>      }<a name="line.137"></a>
+<span class="sourceLineNo">021</span>import java.util.Iterator;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.util.Map;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.Set;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.concurrent.BlockingQueue;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.concurrent.Executors;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.ScheduledExecutorService;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.TimeUnit;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.31"></a>
+<span class="sourceLineNo">032</span><a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.logging.Log;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.commons.logging.LogFactory;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.regionserver.HeapMemoryManager.HeapMemoryTuneObserver;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.util.StringUtils;<a name="line.38"></a>
+<span class="sourceLineNo">039</span><a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.shaded.com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.41"></a>
+<span class="sourceLineNo">042</span><a name="line.42"></a>
+<span class="sourceLineNo">043</span>/**<a name="line.43"></a>
+<span class="sourceLineNo">044</span> * Does the management of memstoreLAB chunk creations. A monotonically incrementing id is associated<a name="line.44"></a>
+<span class="sourceLineNo">045</span> * with every chunk<a name="line.45"></a>
+<span class="sourceLineNo">046</span> */<a name="line.46"></a>
+<span class="sourceLineNo">047</span>@InterfaceAudience.Private<a name="line.47"></a>
+<span class="sourceLineNo">048</span>public class ChunkCreator {<a name="line.48"></a>
+<span class="sourceLineNo">049</span>  private static final Log LOG = LogFactory.getLog(ChunkCreator.class);<a name="line.49"></a>
+<span class="sourceLineNo">050</span>  // monotonically increasing chunkid<a name="line.50"></a>
+<span class="sourceLineNo">051</span>  private AtomicInteger chunkID = new AtomicInteger(1);<a name="line.51"></a>
+<span class="sourceLineNo">052</span>  // maps the chunk against the monotonically increasing chunk id. We need to preserve the<a name="line.52"></a>
+<span class="sourceLineNo">053</span>  // natural ordering of the key<a name="line.53"></a>
+<span class="sourceLineNo">054</span>  // CellChunkMap creation should convert the weak ref to hard reference<a name="line.54"></a>
+<span class="sourceLineNo">055</span><a name="line.55"></a>
+<span class="sourceLineNo">056</span>  // chunk id of each chunk is the first integer written on each chunk,<a name="line.56"></a>
+<span class="sourceLineNo">057</span>  // the header size need to be changed in case chunk id size is changed<a name="line.57"></a>
+<span class="sourceLineNo">058</span>  public static final int SIZEOF_CHUNK_HEADER = Bytes.SIZEOF_INT;<a name="line.58"></a>
+<span class="sourceLineNo">059</span><a name="line.59"></a>
+<span class="sourceLineNo">060</span>  // mapping from chunk IDs to chunks<a name="line.60"></a>
+<span class="sourceLineNo">061</span>  private Map&lt;Integer, Chunk&gt; chunkIdMap = new ConcurrentHashMap&lt;Integer, Chunk&gt;();<a name="line.61"></a>
+<span class="sourceLineNo">062</span><a name="line.62"></a>
+<span class="sourceLineNo">063</span>  private final int chunkSize;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>  private final boolean offheap;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>  @VisibleForTesting<a name="line.65"></a>
+<span class="sourceLineNo">066</span>  static ChunkCreator INSTANCE;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>  @VisibleForTesting<a name="line.67"></a>
+<span class="sourceLineNo">068</span>  static boolean chunkPoolDisabled = false;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>  private MemStoreChunkPool pool;<a name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span>  @VisibleForTesting<a name="line.71"></a>
+<span class="sourceLineNo">072</span>  ChunkCreator(int chunkSize, boolean offheap, long globalMemStoreSize, float poolSizePercentage,<a name="line.72"></a>
+<span class="sourceLineNo">073</span>      float initialCountPercentage, HeapMemoryManager heapMemoryManager) {<a name="line.73"></a>
+<span class="sourceLineNo">074</span>    this.chunkSize = chunkSize;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>    this.offheap = offheap;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>    this.pool = initializePool(globalMemStoreSize, poolSizePercentage, initialCountPercentage);<a name="line.76"></a>
+<span class="sourceLineNo">077</span>    if (heapMemoryManager != null &amp;&amp; this.pool != null) {<a name="line.77"></a>
+<span class="sourceLineNo">078</span>      // Register with Heap Memory manager<a name="line.78"></a>
+<span class="sourceLineNo">079</span>      heapMemoryManager.registerTuneObserver(this.pool);<a name="line.79"></a>
+<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  }<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  /**<a name="line.83"></a>
+<span class="sourceLineNo">084</span>   * Initializes the instance of ChunkCreator<a name="line.84"></a>
+<span class="sourceLineNo">085</span>   * @param chunkSize the chunkSize<a name="line.85"></a>
+<span class="sourceLineNo">086</span>   * @param offheap indicates if the chunk is to be created offheap or not<a name="line.86"></a>
+<span class="sourceLineNo">087</span>   * @param globalMemStoreSize  the global memstore size<a name="line.87"></a>
+<span class="sourceLineNo">088</span>   * @param poolSizePercentage pool size percentage<a name="line.88"></a>
+<span class="sourceLineNo">089</span>   * @param initialCountPercentage the initial count of the chunk pool if any<a name="line.89"></a>
+<span class="sourceLineNo">090</span>   * @param heapMemoryManager the heapmemory manager<a name="line.90"></a>
+<span class="sourceLineNo">091</span>   * @return singleton MSLABChunkCreator<a name="line.91"></a>
+<span class="sourceLineNo">092</span>   */<a name="line.92"></a>
+<span class="sourceLineNo">093</span>  @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "LI_LAZY_INIT_STATIC",<a name="line.93"></a>
+<span class="sourceLineNo">094</span>      justification = "Method is called by single thread at the starting of RS")<a name="line.94"></a>
+<span class="sourceLineNo">095</span>  @VisibleForTesting<a name="line.95"></a>
+<span class="sourceLineNo">096</span>  public static ChunkCreator initialize(int chunkSize, boolean offheap, long globalMemStoreSize,<a name="line.96"></a>
+<span class="sourceLineNo">097</span>      float poolSizePercentage, float initialCountPercentage, HeapMemoryManager heapMemoryManager) {<a name="line.97"></a>
+<span class="sourceLineNo">098</span>    if (INSTANCE != null) return INSTANCE;<a name="line.98"></a>
+<span class="sourceLineNo">099</span>    INSTANCE = new ChunkCreator(chunkSize, offheap, globalMemStoreSize, poolSizePercentage,<a name="line.99"></a>
+<span class="sourceLineNo">100</span>        initialCountPercentage, heapMemoryManager);<a name="line.100"></a>
+<span class="sourceLineNo">101</span>    return INSTANCE;<a name="line.101"></a>
+<span class="sourceLineNo">102</span>  }<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span>  static ChunkCreator getInstance() {<a name="line.104"></a>
+<span class="sourceLineNo">105</span>    return INSTANCE;<a name="line.105"></a>
+<span class="sourceLineNo">106</span>  }<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span>  /**<a name="line.108"></a>
+<span class="sourceLineNo">109</span>   * Creates and inits a chunk. The default implementation.<a name="line.109"></a>
+<span class="sourceLineNo">110</span>   * @return the chunk that was initialized<a name="line.110"></a>
+<span class="sourceLineNo">111</span>   */<a name="line.111"></a>
+<span class="sourceLineNo">112</span>  Chunk getChunk() {<a name="line.112"></a>
+<span class="sourceLineNo">113</span>    return getChunk(CompactingMemStore.IndexType.ARRAY_MAP);<a name="line.113"></a>
+<span class="sourceLineNo">114</span>  }<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span>  /**<a name="line.116"></a>
+<span class="sourceLineNo">117</span>   * Creates and inits a chunk.<a name="line.117"></a>
+<span class="sourceLineNo">118</span>   * @return the chunk that was initialized<a name="line.118"></a>
+<span class="sourceLineNo">119</span>   * @param chunkIndexType whether the requested chunk is going to be used with CellChunkMap index<a name="line.119"></a>
+<span class="sourceLineNo">120</span>   */<a name="line.120"></a>
+<span class="sourceLineNo">121</span>  Chunk getChunk(CompactingMemStore.IndexType chunkIndexType) {<a name="line.121"></a>
+<span class="sourceLineNo">122</span>    Chunk chunk = null;<a name="line.122"></a>
+<span class="sourceLineNo">123</span>    if (pool != null) {<a name="line.123"></a>
+<span class="sourceLineNo">124</span>      //  the pool creates the chunk internally. The chunk#init() call happens here<a name="line.124"></a>
+<span class="sourceLineNo">125</span>      chunk = this.pool.getChunk();<a name="line.125"></a>
+<span class="sourceLineNo">126</span>      // the pool has run out of maxCount<a name="line.126"></a>
+<span class="sourceLineNo">127</span>      if (chunk == null) {<a name="line.127"></a>
+<span class="sourceLineNo">128</span>        if (LOG.isTraceEnabled()) {<a name="line.128"></a>
+<span class="sourceLineNo">129</span>          LOG.trace("The chunk pool is full. Reached maxCount= " + this.pool.getMaxCount()<a name="line.129"></a>
+<span class="sourceLineNo">130</span>              + ". Creating chunk onheap.");<a name="line.130"></a>
+<span class="sourceLineNo">131</span>        }<a name="line.131"></a>
+<span class="sourceLineNo">132</span>      }<a name="line.132"></a>
+<span class="sourceLineNo">133</span>    }<a name="line.133"></a>
+<span class="sourceLineNo">134</span>    if (chunk == null) {<a name="line.134"></a>
+<span class="sourceLineNo">135</span>      // the second boolean parameter means:<a name="line.135"></a>
+<span class="sourceLineNo">136</span>      // if CellChunkMap index is requested, put allocated on demand chunk mapping into chunkIdMap<a name="line.136"></a>
+<span class="sourceLineNo">137</span>      chunk = createChunk(false, chunkIndexType);<a name="line.137"></a>
 <span class="sourceLineNo">138</span>    }<a name="line.138"></a>
-<span class="sourceLineNo">139</span>    if (chunk == null) {<a name="line.139"></a>
-<span class="sourceLineNo">140</span>      chunk = createChunk();<a name="line.140"></a>
-<span class="sourceLineNo">141</span>    }<a name="line.141"></a>
-<span class="sourceLineNo">142</span>    // put this chunk initially into the weakChunkIdMap<a name="line.142"></a>
-<span class="sourceLineNo">143</span>    this.weakChunkIdMap.put(chunk.getId(), new WeakReference&lt;&gt;(chunk));<a name="line.143"></a>
-<span class="sourceLineNo">144</span>    // now we need to actually do the expensive memory allocation step in case of a new chunk,<a name="line.144"></a>
-<span class="sourceLineNo">145</span>    // else only the offset is set to the beginning of the chunk to accept allocations<a name="line.145"></a>
-<span class="sourceLineNo">146</span>    chunk.init();<a name="line.146"></a>
-<span class="sourceLineNo">147</span>    return chunk;<a name="line.147"></a>
-<span class="sourceLineNo">148</span>  }<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
-<span class="sourceLineNo">150</span>  private Chunk createChunk() {<a name="line.150"></a>
-<span class="sourceLineNo">151</span>    return createChunk(false);<a name="line.151"></a>
-<span class="sourceLineNo">152</span>  }<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span>  /**<a name="line.154"></a>
-<span class="sourceLineNo">155</span>   * Creates the chunk either onheap or offheap<a name="line.155"></a>
-<span class="sourceLineNo">156</span>   * @param pool indicates if the chunks have to be created which will be used by the Pool<a name="line.156"></a>
-<span class="sourceLineNo">157</span>   * @return the chunk<a name="line.157"></a>
-<span class="sourceLineNo">158</span>   */<a name="line.158"></a>
-<span class="sourceLineNo">159</span>  private Chunk createChunk(boolean pool) {<a name="line.159"></a>
-<span class="sourceLineNo">160</span>    int id = chunkID.getAndIncrement();<a name="line.160"></a>
-<span class="sourceLineNo">161</span>    assert id &gt; 0;<a name="line.161"></a>
-<span class="sourceLineNo">162</span>    // do not create offheap chunk on demand<a name="line.162"></a>
-<span class="sourceLineNo">163</span>    if (pool &amp;&amp; this.offheap) {<a name="line.163"></a>
-<span class="sourceLineNo">164</span>      return new OffheapChunk(chunkSize, id, pool);<a name="line.164"></a>
-<span class="sourceLineNo">165</span>    } else {<a name="line.165"></a>
-<span class="sourceLineNo">166</span>      return new OnheapChunk(chunkSize, id, pool);<a name="line.166"></a>
-<span class="sourceLineNo">167</span>    }<a name="line.167"></a>
-<span class="sourceLineNo">168</span>  }<a name="line.168"></a>
-<span class="sourceLineNo">169</span><a name="line.169"></a>
-<span class="sourceLineNo">170</span>  @VisibleForTesting<a name="line.170"></a>
-<span class="sourceLineNo">171</span>  // Used to translate the ChunkID into a chunk ref<a name="line.171"></a>
-<span class="sourceLineNo">172</span>  Chunk getChunk(int id) {<a name="line.172"></a>
-<span class="sourceLineNo">173</span>    WeakReference&lt;Chunk&gt; ref = weakChunkIdMap.get(id);<a name="line.173"></a>
-<span class="sourceLineNo">174</span>    if (ref != null) {<a name="line.174"></a>
-<span class="sourceLineNo">175</span>      return ref.get();<a name="line.175"></a>
-<span class="sourceLineNo">176</span>    }<a name="line.176"></a>
-<span class="sourceLineNo">177</span>    // check also the strong mapping<a name="line.177"></a>
-<span class="sourceLineNo">178</span>    return strongChunkIdMap.get(id);<a name="line.178"></a>
-<span class="sourceLineNo">179</span>  }<a name="line.179"></a>
-<span class="sourceLineNo">180</span><a name="line.180"></a>
-<span class="sourceLineNo">181</span>  // transfer the weak pointer to be a strong chunk pointer<a name="line.181"></a>
-<span class="sourceLineNo">182</span>  Chunk saveChunkFromGC(int chunkID) {<a name="line.182"></a>
-<span class="sourceLineNo">183</span>    Chunk c = strongChunkIdMap.get(chunkID); // check whether the chunk is already protected<a name="line.183"></a>
-<span class="sourceLineNo">184</span>    if (c != null)                           // with strong pointer<a name="line.184"></a>
-<span class="sourceLineNo">185</span>      return c;<a name="line.185"></a>
-<span class="sourceLineNo">186</span>    WeakReference&lt;Chunk&gt; ref = weakChunkIdMap.get(chunkID);<a name="line.186"></a>
-<span class="sourceLineNo">187</span>    if (ref != null) {<a name="line.187"></a>
-<span class="sourceLineNo">188</span>      c = ref.get();<a name="line.188"></a>
-<span class="sourceLineNo">189</span>    }<a name="line.189"></a>
-<span class="sourceLineNo">190</span>    if (c != null) {<a name="line.190"></a>
-<span class="sourceLineNo">191</span>      // put this strong reference to chunk into the strongChunkIdMap<a name="line.191"></a>
-<span class="sourceLineNo">192</span>      // the read of the weakMap is always happening before the read of the strongMap<a name="line.192"></a>
-<span class="sourceLineNo">193</span>      // so no synchronization issues here<a name="line.193"></a>
-<span class="sourceLineNo">194</span>      this.strongChunkIdMap.put(chunkID, c);<a name="line.194"></a>
-<span class="sourceLineNo">195</span>      this.weakChunkIdMap.remove(chunkID);<a name="line.195"></a>
-<span class="sourceLineNo">196</span>      return c;<a name="line.196"></a>
-<span class="sourceLineNo">197</span>    }<a name="line.197"></a>
-<span class="sourceLineNo">198</span>    // we should actually never return null as someone should not ask to save from GC a chunk,<a name="line.198"></a>
-<span class="sourceLineNo">199</span>    // which is already released. However, we are not asserting it here and we let the caller<a name="line.199"></a>
-<span class="sourceLineNo">200</span>    // to deal with the return value an assert if needed<a name="line.200"></a>
-<span class="sourceLineNo">201</span>    return null;<a name="line.201"></a>
+<span class="sourceLineNo">139</span><a name="line.139"></a>
+<span class="sourceLineNo">140</span>    // now we need to actually do the expensive memory allocation step in case of a new chunk,<a name="line.140"></a>
+<span class="sourceLineNo">141</span>    // else only the offset is set to the beginning of the chunk to accept allocations<a name="line.141"></a>
+<span class="sourceLineNo">142</span>    chunk.init();<a name="line.142"></a>
+<span class="sourceLineNo">143</span>    return chunk;<a name="line.143"></a>
+<span class="sourceLineNo">144</span>  }<a name="line.144"></a>
+<span class="sourceLineNo">145</span><a name="line.145"></a>
+<span class="sourceLineNo">146</span>  /**<a name="line.146"></a>
+<span class="sourceLineNo">147</span>   * Creates the chunk either onheap or offheap<a name="line.147"></a>
+<span class="sourceLineNo">148</span>   * @param pool indicates if the chunks have to be created which will be used by the Pool<a name="line.148"></a>
+<span class="sourceLineNo">149</span>   * @param chunkIndexType<a name="line.149"></a>
+<span class="sourceLineNo">150</span>   * @return the chunk<a name="line.150"></a>
+<span class="sourceLineNo">151</span>   */<a name="line.151"></a>
+<span class="sourceLineNo">152</span>  private Chunk createChunk(boolean pool, CompactingMemStore.IndexType chunkIndexType) {<a name="line.152"></a>
+<span class="sourceLineNo">153</span>    Chunk chunk = null;<a name="line.153"></a>
+<span class="sourceLineNo">154</span>    int id = chunkID.getAndIncrement();<a name="line.154"></a>
+<span class="sourceLineNo">155</span>    assert id &gt; 0;<a name="line.155"></a>
+<span class="sourceLineNo">156</span>    // do not create offheap chunk on demand<a name="line.156"></a>
+<span class="sourceLineNo">157</span>    if (pool &amp;&amp; this.offheap) {<a name="line.157"></a>
+<span class="sourceLineNo">158</span>      chunk = new OffheapChunk(chunkSize, id, pool);<a name="line.158"></a>
+<span class="sourceLineNo">159</span>    } else {<a name="line.159"></a>
+<span class="sourceLineNo">160</span>      chunk = new OnheapChunk(chunkSize, id, pool);<a name="line.160"></a>
+<span class="sourceLineNo">161</span>    }<a name="line.161"></a>
+<span class="sourceLineNo">162</span>    if (pool || (chunkIndexType == CompactingMemStore.IndexType.CHUNK_MAP)) {<a name="line.162"></a>
+<span class="sourceLineNo">163</span>      // put the pool chunk into the chunkIdMap so it is not GC-ed<a name="line.163"></a>
+<span class="sourceLineNo">164</span>      this.chunkIdMap.put(chunk.getId(), chunk);<a name="line.164"></a>
+<span class="sourceLineNo">165</span>    }<a name="line.165"></a>
+<span class="sourceLineNo">166</span>    return chunk;<a name="line.166"></a>
+<span class="sourceLineNo">167</span>  }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span>  @VisibleForTesting<a name="line.169"></a>
+<span class="sourceLineNo">170</span>  // Used to translate the ChunkID into a chunk ref<a name="line.170"></a>
+<span class="sourceLineNo">171</span>  Chunk getChunk(int id) {<a name="line.171"></a>
+<span class="sourceLineNo">172</span>    // can return null if chunk was never mapped<a name="line.172"></a>
+<span class="sourceLineNo">173</span>    return chunkIdMap.get(id);<a name="line.173"></a>
+<span class="sourceLineNo">174</span>  }<a name="line.174"></a>
+<span class="sourceLineNo">175</span><a name="line.175"></a>
+<span class="sourceLineNo">176</span>  int getChunkSize() {<a name="line.176"></a>
+<span class="sourceLineNo">177</span>    return this.chunkSize;<a name="line.177"></a>
+<span class="sourceLineNo">178</span>  }<a name="line.178"></a>
+<span class="sourceLineNo">179</span><a name="line.179"></a>
+<span class="sourceLineNo">180</span>  boolean isOffheap() {<a name="line.180"></a>
+<span class="sourceLineNo">181</span>    return this.offheap;<a name="line.181"></a>
+<span class="sourceLineNo">182</span>  }<a name="line.182"></a>
+<span class="sourceLineNo">183</span><a name="line.183"></a>
+<span class="sourceLineNo">184</span>  private void removeChunks(Set&lt;Integer&gt; chunkIDs) {<a name="line.184"></a>
+<span class="sourceLineNo">185</span>    this.chunkIdMap.keySet().removeAll(chunkIDs);<a name="line.185"></a>
+<span class="sourceLineNo">186</span>  }<a name="line.186"></a>
+<span class="sourceLineNo">187</span><a name="line.187"></a>
+<span class="sourceLineNo">188</span>  Chunk removeChunk(int chunkId) {<a name="line.188"></a>
+<span class="sourceLineNo">189</span>    return this.chunkIdMap.remove(chunkId);<a name="line.189"></a>
+<span class="sourceLineNo">190</span>  }<a name="line.190"></a>
+<span class="sourceLineNo">191</span><a name="line.191"></a>
+<span class="sourceLineNo">192</span>  @VisibleForTesting<a name="line.192"></a>
+<span class="sourceLineNo">193</span>  // the chunks in the chunkIdMap may already be released so we shouldn't relay<a name="line.193"></a>
+<span class="sourceLineNo">194</span>  // on this counting for strong correctness. This method is used only in testing.<a name="line.194"></a>
+<span class="sourceLineNo">195</span>  int numberOfMappedChunks() {<a name="line.195"></a>
+<span class="sourceLineNo">196</span>    return this.chunkIdMap.size();<a name="line.196"></a>
+<span class="sourceLineNo">197</span>  }<a name="line.197"></a>
+<span class="sourceLineNo">198</span><a name="line.198"></a>
+<span class="sourceLineNo">199</span>  @VisibleForTesting<a name="line.199"></a>
+<span class="sourceLineNo">200</span>  void clearChunkIds() {<a name="line.200"></a>
+<span class="sourceLineNo">201</span>    this.chunkIdMap.clear();<a name="line.201"></a>
 <span class="sourceLineNo">202</span>  }<a name="line.202"></a>
 <span class="sourceLineNo">203</span><a name="line.203"></a>
-<span class="sourceLineNo">204</span>  int getChunkSize() {<a name="line.204"></a>
-<span class="sourceLineNo">205</span>    return this.chunkSize;<a name="line.205"></a>
-<span class="sourceLineNo">206</span>  }<a name="line.206"></a>
-<span class="sourceLineNo">207</span><a name="line.207"></a>
-<span class="sourceLineNo">208</span>  boolean isOffheap() {<a name="line.208"></a>
-<span class="sourceLineNo">209</span>    return this.offheap;<a name="line.209"></a>
-<span class="sourceLineNo">210</span>  }<a name="line.210"></a>
-<span class="sourceLineNo">211</span><a name="line.211"></a>
-<span class="sourceLineNo">212</span>  private void removeChunks(Set&lt;Integer&gt; chunkIDs) {<a name="line.212"></a>
-<span class="sourceLineNo">213</span>    this.weakChunkIdMap.keySet().removeAll(chunkIDs);<a name="line.213"></a>
-<span class="sourceLineNo">214</span>    this.strongChunkIdMap.keySet().removeAll(chunkIDs);<a name="line.214"></a>
-<span class="sourceLineNo">215</span>  }<a name="line.215"></a>
-<span class="sourceLineNo">216</span><a name="line.216"></a>
-<span class="sourceLineNo">217</span>  Chunk removeChunk(int chunkId) {<a name="line.217"></a>
-<span class="sourceLineNo">218</span>    WeakReference&lt;Chunk&gt; weak = this.weakChunkIdMap.remove(chunkId);<a name="line.218"></a>
-<span class="sourceLineNo">219</span>    Chunk strong = this.strongChunkIdMap.remove(chunkId);<a name="line.219"></a>
-<span class="sourceLineNo">220</span>    if (weak != null) {<a name="line.220"></a>
-<span class="sourceLineNo">221</span>      return weak.get();<a name="line.221"></a>
-<span class="sourceLineNo">222</span>    }<a name="line.222"></a>
-<span class="sourceLineNo">223</span>    return strong;<a name="line.223"></a>
-<span class="sourceLineNo">224</span>  }<a name="line.224"></a>
-<span class="sourceLineNo">225</span><a name="line.225"></a>
-<span class="sourceLineNo">226</span>  @VisibleForTesting<a name="line.226"></a>
-<span class="sourceLineNo">227</span>  // the chunks in the weakChunkIdMap may already be released so we shouldn't relay<a name="line.227"></a>
-<span class="sourceLineNo">228</span>  // on this counting for strong correctness. This method is used only in testing.<a name="line.228"></a>
-<span class="sourceLineNo">229</span>  int size() {<a name="line.229"></a>
-<span class="sourceLineNo">230</span>    return this.weakChunkIdMap.size()+this.strongChunkIdMap.size();<a name="line.230"></a>
-<span class="sourceLineNo">231</span>  }<a name="line.231"></a>
-<span class="sourceLineNo">232</span><a name="line.232"></a>
-<span class="sourceLineNo">233</span>  @VisibleForTesting<a name="line.233"></a>
-<span class="sourceLineNo">234</span>  void clearChunkIds() {<a name="line.234"></a>
-<span class="sourceLineNo">235</span>    this.strongChunkIdMap.clear();<a name="line.235"></a>
-<span class="sourceLineNo">236</span>    this.weakChunkIdMap.clear();<a name="line.236"></a>
-<span class="sourceLineNo">237</span>  }<a name="line.237"></a>
-<span class="sourceLineNo">238</span><a name="line.238"></a>
-<span class="sourceLineNo">239</span>  /**<a name="line.239"></a>
-<span class="sourceLineNo">240</span>   * A pool of {@link Chunk} instances.<a name="line.240"></a>
-<span class="sourceLineNo">241</span>   *<a name="line.241"></a>
-<span class="sourceLineNo">242</span>   * MemStoreChunkPool caches a number of retired chunks for reusing, it could<a name="line.242"></a>
-<span class="sourceLineNo">243</span>   * decrease allocating bytes when writing, thereby optimizing the garbage<a name="line.243"></a>
-<span class="sourceLineNo">244</span>   * collection on JVM.<a name="line.244"></a>
-<span class="sourceLineNo">245</span>   */<a name="line.245"></a>
-<span class="sourceLineNo">246</span>  private  class MemStoreChunkPool implements HeapMemoryTuneObserver {<a name="line.246"></a>
-<span class="sourceLineNo">247</span>    private int maxCount;<a name="line.247"></a>
-<span class="sourceLineNo">248</span><a name="line.248"></a>
-<span class="sourceLineNo">249</span>    // A queue of reclaimed chunks<a name="line.249"></a>
-<span class="sourceLineNo">250</span>    private final BlockingQueue&lt;Chunk&gt; reclaimedChunks;<a name="line.250"></a>
-<span class="sourceLineNo">251</span>    private final float poolSizePercentage;<a name="line.251"></a>
-<span class="sourceLineNo">252</span><a name="line.252"></a>
-<span class="sourceLineNo">253</span>    /** Statistics thread schedule pool */<a name="line.253"></a>
-<span class="sourceLineNo">254</span>    private final ScheduledExecutorService scheduleThreadPool;<a name="line.254"></a>
-<span class="sourceLineNo">255</span>    /** Statistics thread */<a name="line.255"></a>
-<span class="sourceLineNo">256</span>    private static final int statThreadPeriod = 60 * 5;<a name="line.256"></a>
-<span class="sourceLineNo">257</span>    private final AtomicLong chunkCount = new AtomicLong();<a name="line.257"></a>
-<span class="sourceLineNo">258</span>    private final AtomicLong reusedChunkCount = new AtomicLong();<a name="line.258"></a>
-<span class="sourceLineNo">259</span><a name="line.259"></a>
-<span class="sourceLineNo">260</span>    MemStoreChunkPool(int maxCount, int initialCount, float poolSizePercentage) {<a name="line.260"></a>
-<span class="sourceLineNo">261</span>      this.maxCount = maxCount;<a name="line.261"></a>
-<span class="sourceLineNo">262</span>      this.poolSizePercentage = poolSizePercentage;<a name="line.262"></a>
-<span class="sourceLineNo">263</span>      this.reclaimedChunks = new LinkedBlockingQueue&lt;&gt;();<a name="line.263"></a>
-<span class="sourceLineNo">264</span>      for (int i = 0; i &lt; initialCount; i++) {<a name="line.264"></a>
-<span class="sourceLineNo">265</span>        Chunk chunk = createChunk(true);<a name="line.265"></a>
-<span class="sourceLineNo">266</span>        chunk.init();<a name="line.266"></a>
-<span class="sourceLineNo">267</span>        reclaimedChunks.add(chunk);<a name="line.267"></a>
-<span class="sourceLineNo">268</span>      }<a name="line.268"></a>
-<span class="sourceLineNo">269</span>      chunkCount.set(initialCount);<a name="line.269"></a>
-<span class="sourceLineNo">270</span>      final String n = Thread.currentThread().getName();<a name="line.270"></a>
-<span class="sourceLineNo">271</span>      scheduleThreadPool = Executors.newScheduledThreadPool(1, new ThreadFactoryBuilder()<a name="line.271"></a>
-<span class="sourceLineNo">272</span>          .setNameFormat(n + "-MemStoreChunkPool Statistics").setDaemon(true).build());<a name="line.272"></a>
-<span class="sourceLineNo">273</span>      this.scheduleThreadPool.scheduleAtFixedRate(new StatisticsThread(), statThreadPeriod,<a name="line.273"></a>
-<span class="sourceLineNo">274</span>          statThreadPeriod, TimeUnit.SECONDS);<a name="line.274"></a>
-<span class="sourceLineNo">275</span>    }<a name="line.275"></a>
-<span class="sourceLineNo">276</span><a name="line.276"></a>
-<span class="sourceLineNo">277</span>    /**<a name="line.277"></a>
-<span class="sourceLineNo">278</span>     * Poll a chunk from the pool, reset it if not null, else create a new chunk to return if we have<a name="line.278"></a>
-<span class="sourceLineNo">279</span>     * not yet created max allowed chunks count. When we have already created max allowed chunks and<a name="line.279"></a>
-<span class="sourceLineNo">280</span>     * no free chunks as of now, return null. It is the responsibility of the caller to make a chunk<a name="line.280"></a>
-<span class="sourceLineNo">281</span>     * then.<a name="line.281"></a>
-<span class="sourceLineNo">282</span>     * Note: Chunks returned by this pool must be put back to the pool after its use.<a name="line.282"></a>
-<span class="sourceLineNo">283</span>     * @return a chunk<a name="line.283"></a>
-<span class="sourceLineNo">284</span>     * @see #putbackChunks(Set)<a name="line.284"></a>
-<span class="sourceLineNo">285</span>     */<a name="line.285"></a>
-<span class="sourceLineNo">286</span>    Chunk getChunk() {<a name="line.286"></a>
-<span class="sourceLineNo">287</span>      Chunk chunk = reclaimedChunks.poll();<a name="line.287"></a>
-<span class="sourceLineNo">288</span>      if (chunk != null) {<a name="line.288"></a>
-<span class="sourceLineNo">289</span>        chunk.reset();<a name="line.289"></a>
-<span class="sourceLineNo">290</span>        reusedChunkCount.incrementAndGet();<a name="line.290"></a>
-<span class="sourceLineNo">291</span>      } else {<a name="line.291"></a>
-<span class="sourceLineNo">292</span>        // Make a chunk iff we have not yet created the maxCount chunks<a name="line.292"></a>
-<span class="sourceLineNo">293</span>        while (true) {<a name="line.293"></a>
-<span class="sourceLineNo">294</span>          long created = this.chunkCount.get();<a name="line.294"></a>
-<span class="sourceLineNo">295</span>          if (created &lt; this.maxCount) {<a name="line.295"></a>
-<span class="sourceLineNo">296</span>            if (this.chunkCount.compareAndSet(created, created + 1)) {<a name="line.296"></a>
-<span class="sourceLineNo">297</span>              chunk = createChunk(true);<a name="line.297"></a>
-<span class="sourceLineNo">298</span>              break;<a name="line.298"></a>
-<span class="sourceLineNo">299</span>            }<a name="line.299"></a>
-<span class="sourceLineNo">300</span>          } else {<a name="line.300"></a>
-<span class="sourceLineNo">301</span>            break;<a name="line.301"></a>
-<span class="sourceLineNo">302</span>          }<a name="line.302"></a>
-<span class="sourceLineNo">303</span>        }<a name="line.303"></a>
-<span class="sourceLineNo">304</span>      }<a name="line.304"></a>
-<span class="sourceLineNo">305</span>      return chunk;<a name="line.305"></a>
-<span class="sourceLineNo">306</span>    }<a name="line.306"></a>
-<span class="sourceLineNo">307</span><a name="line.307"></a>
-<span class="sourceLineNo">308</span>    /**<a name="line.308"></a>
-<span class="sourceLineNo">309</span>     * Add the chunks to the pool, when the pool achieves the max size, it will skip the remaining<a name="line.309"></a>
-<span class="sourceLineNo">310</span>     * chunks<a name="line.310"></a>
-<span class="sourceLineNo">311</span>     * @param chunks<a name="line.311"></a>
-<span class="sourceLineNo">312</span>     */<a name="line.312"></a>
-<span class="sourceLineNo">313</span>    private void putbackChunks(Set&lt;Integer&gt; chunks) {<a name="line.313"></a>
-<span class="sourceLineNo">314</span>      int toAdd = Math.min(chunks.size(), this.maxCount - reclaimedChunks.size());<a name="line.314"></a>
-<span class="sourceLineNo">315</span>      Iterator&lt;Integer&gt; iterator = chunks.iterator();<a name="line.315"></a>
-<span class="sourceLineNo">316</span>      while (iterator.hasNext()) {<a name="line.316"></a>
-<span class="sourceLineNo">317</span>        Integer chunkId = iterator.next();<a name="line.317"></a>
-<span class="sourceLineNo">318</span>        // remove the chunks every time though they are from the pool or not<a name="line.318"></a>
-<span class="sourceLineNo">319</span>        Chunk chunk = ChunkCreator.this.removeChunk(chunkId);<a name="line.319"></a>
-<span class="sourceLineNo">320</span>        if (chunk != null) {<a name="line.320"></a>
-<span class="sourceLineNo">321</span>          if (chunk.isFromPool() &amp;&amp; toAdd &gt; 0) {<a name="line.321"></a>
-<span class="sourceLineNo">322</span>            reclaimedChunks.add(chunk);<a name="line.322"></a>
-<span class="sourceLineNo">323</span>          }<a name="line.323"></a>
-<span class="sourceLineNo">324</span>          toAdd--;<a name="line.324"></a>
-<span class="sourceLineNo">325</span>        }<a name="line.325"></a>
+<span class="sourceLineNo">204</span>  /**<a name="line.204"></a>
+<span class="sourceLineNo">205</span>   * A pool of {@link Chunk} instances.<a name="line.205"></a>
+<span class="sourceLineNo">206</span>   *<a name="line.206"></a>
+<span class="sourceLineNo">207</span>   * MemStoreChunkPool caches a number of retired chunks for reusing, it could<a name="line.207"></a>
+<span class="sourceLineNo">208</span>   * decrease allocating bytes when writing, thereby optimizing the garbage<a name="line.208"></a>
+<span class="sourceLineNo">209</span>   * collection on JVM.<a name="line.209"></a>
+<span class="sourceLineNo">210</span>   */<a name="line.210"></a>
+<span class="sourceLineNo">211</span>  private  class MemStoreChunkPool implements HeapMemoryTuneObserver {<a name="line.211"></a>
+<span class="sourceLineNo">212</span>    private int maxCount;<a name="line.212"></a>
+<span class="sourceLineNo">213</span><a name="line.213"></a>
+<span class="sourceLineNo">214</span>    // A queue of reclaimed chunks<a name="line.214"></a>
+<span class="sourceLineNo">215</span>    private final BlockingQueue&lt;Chunk&gt; reclaimedChunks;<a name="line.215"></a>
+<span class="sourceLineNo">216</span>    private final float poolSizePercentage;<a name="line.216"></a>
+<span class="sourceLineNo">217</span><a name="line.217"></a>
+<span class="sourceLineNo">218</span>    /** Statistics thread schedule pool */<a name="line.218"></a>
+<span class="sourceLineNo">219</span>    private final ScheduledExecutorService scheduleThreadPool;<a name="line.219"></a>
+<span class="sourceLineNo">220</span>    /** Statistics thread */<a name="line.220"></a>
+<span class="sourceLineNo">221</span>    private static final int statThreadPeriod = 60 * 5;<a name="line.221"></a>
+<span class="sourceLineNo">222</span>    private final AtomicLong chunkCount = new AtomicLong();<a name="line.222"></a>
+<span class="sourceLineNo">223</span>    private final AtomicLong reusedChunkCount = new AtomicLong();<a name="line.223"></a>
+<span class="sourceLineNo">224</span><a name="line.224"></a>
+<span class="sourceLineNo">225</span>    MemStoreChunkPool(int maxCount, int initialCount, float poolSizePercentage) {<a name="line.225"></a>
+<span class="sourceLineNo">226</span>      this.maxCount = maxCount;<a name="line.226"></a>
+<span class="sourceLineNo">227</span>      this.poolSizePercentage = poolSizePercentage;<a name="line.227"></a>
+<span class="sourceLineNo">228</span>      this.reclaimedChunks = new LinkedBlockingQueue&lt;&gt;();<a name="line.228"></a>
+<span class="sourceLineNo">229</span>      for (int i = 0; i &lt; initialCount; i++) {<a name="line.229"></a>
+<span class="sourceLineNo">230</span>        // Chunks from pool are covered with strong references anyway<a name="line.230"></a>
+<span class="sourceLineNo">231</span>        // TODO: change to CHUNK_MAP if it is generally defined<a name="line.231"></a>
+<span class="sourceLineNo">232</span>        Chunk chunk = createChunk(true, CompactingMemStore.IndexType.ARRAY_MAP);<a name="line.232"></a>
+<span class="sourceLineNo">233</span>        chunk.init();<a name="line.233"></a>
+<span class="sourceLineNo">234</span>        reclaimedChunks.add(chunk);<a name="line.234"></a>
+<span class="sourceLineNo">235</span>      }<a name="line.235"></a>
+<span class="sourceLineNo">236</span>      chunkCount.set(initialCount);<a name="line.236"></a>
+<span class="sourceLineNo">237</span>      final String n = Thread.currentThread().getName();<a name="line.237"></a>
+<span class="sourceLineNo">238</span>      scheduleThreadPool = Executors.newScheduledThreadPool(1, new ThreadFactoryBuilder()<a name="line.238"></a>
+<span class="sourceLineNo">239</span>          .setNameFormat(n + "-MemStoreChunkPool Statistics").setDaemon(true).build());<a name="line.239"></a>
+<span class="sourceLineNo">240</span>      this.scheduleThreadPool.scheduleAtFixedRate(new StatisticsThread(), statThreadPeriod,<a name="line.240"></a>
+<span class="sourceLineNo">241</span>          statThreadPeriod, TimeUnit.SECONDS);<a name="line.241"></a>
+<span class="sourceLineNo">242</span>    }<a name="line.242"></a>
+<span class="sourceLineNo">243</span><a name="line.243"></a>
+<span class="sourceLineNo">244</span>    /**<a name="line.244"></a>
+<span class="sourceLineNo">245</span>     * Poll a chunk from the pool, reset it if not null, else create a new chunk to return if we have<a name="line.245"></a>
+<span class="sourceLineNo">246</span>     * not yet created max allowed chunks count. When we have already created max allowed chunks and<a name="line.246"></a>
+<span class="sourceLineNo">247</span>     * no free chunks as of now, return null. It is the responsibility of the caller to make a chunk<a name="line.247"></a>
+<span class="sourceLineNo">248</span>     * then.<a name="line.248"></a>
+<span class="sourceLineNo">249</span>     * Note: Chunks returned by this pool must be put back to the pool after its use.<a name="line.249"></a>
+<span class="sourceLineNo">250</span>     * @return a chunk<a name="line.250"></a>
+<span class="sourceLineNo">251</span>     * @see #putbackChunks(Chunk)<a name="line.251"></a>
+<span class="sourceLineNo">252</span>     */<a name="line.252"></a>
+<span class="sourceLineNo">253</span>    Chunk getChunk() {<a name="line.253"></a>
+<span class="sourceLineNo">254</span>      Chunk chunk = reclaimedChunks.poll();<a name="line.254"></a>
+<span class="sourceLineNo">255</span>      if (chunk != null) {<a name="line.255"></a>
+<span class="sourceLineNo">256</span>        chunk.reset();<a name="line.256"></a>
+<span class="sourceLineNo">257</span>        reusedChunkCount.incrementAndGet();<a name="line.257"></a>
+<span class="sourceLineNo">258</span>      } else {<a name="line.258"></a>
+<span class="sourceLineNo">259</span>        // Make a chunk iff we have not yet created the maxCount chunks<a name="line.259"></a>
+<span class="sourceLineNo">260</span>        while (true) {<a name="line.260"></a>
+<span class="sourceLineNo">261</span>          long created = this.chunkCount.get();<a name="line.261"></a>
+<span class="sourceLineNo">262</span>          if (created &lt; this.maxCount) {<a name="line.262"></a>
+<span class="sourceLineNo">263</span>            if (this.chunkCount.compareAndSet(created, created + 1)) {<a name="line.263"></a>
+<span class="sourceLineNo">264</span>              // TODO: change to CHUNK_MAP if it is generally defined<a name="line.264"></a>
+<span class="sourceLineNo">265</span>              chunk = createChunk(true, CompactingMemStore.IndexType.ARRAY_MAP);<a name="line.265"></a>
+<span class="sourceLineNo">266</span>              break;<a name="line.266"></a>
+<span class="sourceLineNo">267</span>            }<a name="line.267"></a>
+<span class="sourceLineNo">268</span>          } else {<a name="line.268"></a>
+<span class="sourceLineNo">269</span>            break;<a name="line.269"></a>
+<span class="sourceLineNo">270</span>          }<a name="line.270"></a>
+<span class="sourceLineNo">271</span>        }<a name="line.271"></a>
+<span class="sourceLineNo">272</span>      }<a name="line.272"></a>
+<span class="sourceLineNo">273</span>      return chunk;<a name="line.273"></a>
+<span class="sourceLineNo">274</span>    }<a name="line.274"></a>
+<span class="sourceLineNo">275</span><a name="line.275"></a>
+<span class="sourceLineNo">276</span>    /**<a name="line.276"></a>
+<span class="sourceLineNo">277</span>     * Add the chunks to the pool, when the pool achieves the max size, it will skip the remaining<a name="line.277"></a>
+<span class="sourceLineNo">278</span>     * chunks<a name="line.278"></a>
+<span class="sourceLineNo">279</span>     * @param c<a name="line.279"></a>
+<span class="sourceLineNo">280</span>     */<a name="line.280"></a>
+<span class="sourceLineNo">281</span>    private void putbackChunks(Chunk c) {<a name="line.281"></a>
+<span class="sourceLineNo">282</span>      int toAdd = this.maxCount - reclaimedChunks.size();<a name="line.282"></a>
+<span class="sourceLineNo">283</span>      if (c.isFromPool() &amp;&amp; toAdd &gt; 0) {<a name="line.283"></a>
+<span class="sourceLineNo">284</span>        reclaimedChunks.add(c);<a name="line.284"></a>
+<span class="sourceLineNo">285</span>      } else {<a name="line.285"></a>
+<span class="sourceLineNo">286</span>        // remove the chunk (that is not going to pool)<a name="line.286"></a>
+<span class="sourceLineNo">287</span>        // though it is initially from the pool or not<a name="line.287"></a>
+<span class="sourceLineNo">288</span>        ChunkCreator.this.removeChunk(c.getId());<a name="line.288"></a>
+<span class="sourceLineNo">289</span>      }<a name="line.289"></a>
+<span class="sourceLineNo">290</span>    }<a name="line.290"></a>
+<span class="sourceLineNo">291</span><a name="line.291"></a>
+<span class="sourceLineNo">292</span>    private class StatisticsThread extends Thread {<a name="line.292"></a>
+<span class="sourceLineNo">293</span>      StatisticsThread() {<a name="line.293"></a>
+<span class="sourceLineNo">294</span>        super("MemStoreChunkPool.StatisticsThread");<a name="line.294"></a>
+<span class="sourceLineNo">295</span>        setDaemon(true);<a name="line.295"></a>
+<span class="sourceLineNo">296</span>      }<a name="line.296"></a>
+<span class="sourceLineNo">297</span><a name="line.297"></a>
+<span class="sourceLineNo">298</span>      @Override<a name="line.298"></a>
+<span class="sourceLineNo">299</span>      public void run() {<a name="line.299"></a>
+<span class="sourceLineNo">300</span>        logStats();<a name="line.300"></a>
+<span class="sourceLineNo">301</span>      }<a name="line.301"></a>
+<span class="sourceLineNo">302</span><a name="line.302"></a>
+<span class="sourceLineNo">303</span>      private void logStats() {<a name="line.303"></a>
+<span class="sourceLineNo">304</span>        if (!LOG.isDebugEnabled()) return;<a name="line.304"></a>
+<span class="sourceLineNo">305</span>        long created = chunkCount.get();<a name="line.305"></a>
+<span class="sourceLineNo">306</span>        long reused = reusedChunkCount.get();<a name="line.306"></a>
+<span class="sourceLineNo">307</span>        long total = created + reused;<a name="line.307"></a>
+<span class="sourceLineNo">308</span>        LOG.debug("Stats: current pool size=" + reclaimedChunks.size()<a name="line.308"></a>
+<span class="sourceLineNo">309</span>            + ",created chunk count=" + created<a name="line.309"></a>
+<span class="sourceLineNo">310</span>            + ",reused chunk count=" + reused<a name="line.310"></a>
+<span class="sourceLineNo">311</span>            + ",reuseRatio=" + (total == 0 ? "0" : StringUtils.formatPercent(<a name="line.311"></a>
+<span class="sourceLineNo">312</span>                (float) reused / (float) total, 2)));<a name="line.312"></a>
+<span class="sourceLineNo">313</span>      }<a name="line.313"></a>
+<span class="sourceLineNo">314</span>    }<a name="line.314"></a>
+<span class="sourceLineNo">315</span><a name="line.315"></a>
+<span class="sourceLineNo">316</span>    private int getMaxCount() {<a name="line.316"></a>
+<span class="sourceLineNo">317</span>      return this.maxCount;<a name="line.317"></a>
+<span class="sourceLineNo">318</span>    }<a name="line.318"></a>
+<span class="sourceLineNo">319</span><a name="line.319"></a>
+<span class="sourceLineNo">320</span>    @Override<a name="line.320"></a>
+<span class="sourceLineNo">321</span>    public void onHeapMemoryTune(long newMemstoreSize, long newBlockCacheSize) {<a name="line.321"></a>
+<span class="sourceLineNo">322</span>      // don't do any tuning in case of offheap memstore<a name="line.322"></a>
+<span class="sourceLineNo">323</span>      if (isOffheap()) {<a name="line.323"></a>
+<span class="sourceLineNo">324</span>        LOG.warn("Not tuning the chunk pool as it is offheap");<a name="line.324"></a>
+<span class="sourceLineNo">325</span>        return;<a name="line.325"></a>
 <span class="sourceLineNo">326</span>      }<a name="line.326"></a>
-<span class="sourceLineNo">327</span>    }<a name="line.327"></a>
-<span class="sourceLineNo">328</span><a name="line.328"></a>
-<span class="sourceLineNo">329</span>    private class StatisticsThread extends Thread {<a name="line.329"></a>
-<span class="sourceLineNo">330</span>      StatisticsThread() {<a name="line.330"></a>
-<span class="sourceLineNo">331</span>        super("MemStoreChunkPool.StatisticsThread");<a name="line.331"></a>
-<span class="sourceLineNo">332</span>        setDaemon(true);<a name="line.332"></a>
-<span class="sourceLineNo">333</span>      }<a name="line.333"></a>
-<span class="sourceLineNo">334</span><a name="line.334"></a>
-<span class="sourceLineNo">335</span>      @Override<a name="line.335"></a>
-<span class="sourceLineNo">336</span>      public void run() {<a name="line.336"></a>
-<span class="sourceLineNo">337</span>        logStats();<a name="line.337"></a>
-<span class="sourceLineNo">338</span>      }<a name="line.338"></a>
-<span class="sourceLineNo">339</span><a name="line.339"></a>
-<span class="sourceLineNo">340</span>      private void logStats() {<a name="line.340"></a>
-<span class="sourceLineNo">341</span>        if (!LOG.isDebugEnabled()) return;<a name="line.341"></a>
-<span class="sourceLineNo">342</span>        long created = chunkCount.get();<a name="line.342"></a>
-<span class="sourceLineNo">343</span>        long reused = reusedChunkCount.get();<a name="line.343"></a>
-<span class="sourceLineNo">344</span>        long total = created + reused;<a name="line.344"></a>
-<span class="sourceLineNo">345</span>        LOG.debug("Stats: current pool size=" + reclaimedChunks.size()<a name="line.345"></a>
-<span class="sourceLineNo">346</span>            + ",created chunk count=" + created<a name="line.346"></a>
-<span class="sourceLineNo">347</span>            + ",reused chunk count=" + reused<a name="line.347"></a>
-<span class="sourceLineNo">348</span>            + ",reuseRatio=" + (total == 0 ? "0" : StringUtils.formatPercent(<a name="line.348"></a>
-<span class="sourceLineNo">349</span>                (float) reused / (float) total, 2)));<a name="line.349"></a>
-<span class="sourceLineNo">350</span>      }<a name="line.350"></a>
-<span class="sourceLineNo">351</span>    }<a name="line.351"></a>
+<span class="sourceLineNo">327</span>      int newMaxCount =<a name="line.327"></a>
+<span class="sourceLineNo">328</span>          (int) (newMemstoreSize * poolSizePercentage / getChunkSize());<a name="line.328"></a>
+<span class="sourceLineNo">329</span>      if (newMaxCount != this.maxCount) {<a name="line.329"></a>
+<span class="sourceLineNo">330</span>        // We need an adjustment in the chunks numbers<a name="line.330"></a>
+<span class="sourceLineNo">331</span>        if (newMaxCount &gt; this.maxCount) {<a name="line.331"></a>
+<span class="sourceLineNo">332</span>          // Max chunks getting increased. Just change the variable. Later calls to getChunk() would<a name="line.332"></a>
+<span class="sourceLineNo">333</span>          // create and add them to Q<a name="line.333"></a>
+<span class="sourceLineNo">334</span>          LOG.info("Max count for chunks increased from " + this.maxCount + " to " + newMaxCount);<a name="line.334"></a>
+<span class="sourceLineNo">335</span>          this.maxCount = newMaxCount;<a name="line.335"></a>
+<span class="sourceLineNo">336</span>        } else {<a name="line.336"></a>
+<span class="sourceLineNo">337</span>          // Max chunks getting decreased. We may need to clear off some of the pooled chunks now<a name="line.337"></a>
+<span class="sourceLineNo">338</span>          // itself. If the extra chunks are serving already, do not pool those when we get them back<a name="line.338"></a>
+<span class="sourceLineNo">339</span>          LOG.info("Max count for chunks decreased from " + this.maxCount + " to " + newMaxCount);<a name="line.339"></a>
+<span class="sourceLineNo">340</span>          this.maxCount = newMaxCount;<a name="line.340"></a>
+<span class="sourceLineNo">341</span>          if (this.reclaimedChunks.size() &gt; newMaxCount) {<a name="line.341"></a>
+<span class="sourceLineNo">342</span>            synchronized (this) {<a name="line.342"></a>
+<span class="sourceLineNo">343</span>              while (this.reclaimedChunks.size() &gt; newMaxCount) {<a name="line.343"></a>
+<span class="sourceLineNo">344</span>                this.reclaimedChunks.poll();<a name="line.344"></a>
+<span class="sourceLineNo">345</span>              }<a name="line.345"></a>
+<span class="sourceLineNo">346</span>            }<a name="line.346"></a>
+<span class="sourceLineNo">347</span>          }<a name="line.347"></a>
+<span class="sourceLineNo">348</span>        }<a name="line.348"></a>
+<span class="sourceLineNo">349</span>      }<a name="line.349"></a>
+<span class="sourceLineNo">350</span>    }<a name="line.350"></a>
+<span class="sourceLineNo">351</span>  }<a name="line.351"></a>
 <span class="sourceLineNo">352</span><a name="line.352"></a>
-<span class="sourceLineNo">353</span>    private int getMaxCount() {<a name="line.353"></a>
-<span class="sourceLineNo">354</span>      return this.maxCount;<a name="line.354"></a>
-<span class="sourceLineNo">355</span>    }<a name="line.355"></a>
-<span class="sourceLineNo">356</span><a name="line.356"></a>
-<span class="sourceLineNo">357</span>    @Override<a name="line.357"></a>
-<span class="sourceLineNo">358</span>    public void onHeapMemoryTune(long newMemstoreSize, long newBlockCacheSize) {<a name="line.358"></a>
-<span class="sourceLineNo">359</span>      // don't do any tuning in case of offheap memstore<a name="line.359"></a>
-<span class="sourceLineNo">360</span>      if (isOffheap()) {<a name="line.360"></a>
-<span class="sourceLineNo">361</span>        LOG.warn("Not tuning the chunk pool as it is offheap");<a name="line.361"></a>
-<span class="sourceLineNo">362</span>        return;<a name="line.362"></a>
-<span class="sourceLineNo">363</span>      }<a name="line.363"></a>
-<span class="sourceLineNo">364</span>      int newMaxCount =<a name="line.364"></a>
-<span class="sourceLineNo">365</span>          (int) (newMemstoreSize * poolSizePercentage / getChunkSize());<a name="line.365"></a>
-<span class="sourceLineNo">366</span>      if (newMaxCount != this.maxCount) {<a name="line.366"></a>
-<span class="sourceLineNo">367</span>        // We need an adjustment in the chunks numbers<a name="line.367"></a>
-<span class="sourceLineNo">368</span>        if (newMaxCount &gt; this.maxCount) {<a name="line.368"></a>
-<span class="sourceLineNo">369</span>          // Max chunks getting increased. Just change the variable. Later calls to getChunk() would<a name="line.369"></a>
-<span class="sourceLineNo">370</span>          // create and add them to Q<a name="line.370"></a>
-<span class="sourceLineNo">371</span>          LOG.info("Max count for chunks increased from " + this.maxCount + " to " + newMaxCount);<a name="line.371"></a>
-<span class="sourceLineNo">372</span>          this.maxCount = newMaxCount;<a name="line.372"></a>
-<span class="sourceLineNo">373</span>        } else {<a name="line.373"></a>
-<span class="sourceLineNo">374</span>          // Max chunks getting decreased. We may need to clear off some of the pooled chunks now<a name="line.374"></a>
-<span class="sourceLineNo">375</span>          // itself. If the extra chunks are serving already, do not pool those when we get them back<a name="line.375"></a>
-<span class="sourceLineNo">376</span>          LOG.info("Max count for chunks decreased from " + this.maxCount + " to " + newMaxCount);<a name="line.376"></a>
-<span class="sourceLineNo">377</span>          this.maxCount = newMaxCount;<a name="line.377"></a>
-<span class="sourceLineNo">378</span>          if (this.reclaimedChunks.size() &gt; newMaxCount) {<a name="line.378"></a>
-<span class="sourceLineNo">379</span>            synchronized (this) {<a name="line.379"></a>
-<span class="sourceLineNo">380</span>              while (this.reclaimedChunks.size() &gt; newMaxCount) {<a name="line.380"></a>
-<span class="sourceLineNo">381</span>                this.reclaimedChunks.poll();<a name="line.381"></a>
-<span class="sourceLineNo">382</span>              }<a name="line.382"></a>
-<span class="sourceLineNo">383</span>            }<a name="line.383"></a>
-<span class="sourceLineNo">384</span>          }<a name="line.384"></a>
-<span class="sourceLineNo">385</span>        }<a name="line.385"></a>
-<span class="sourceLineNo">386</span>      }<a name="line.386"></a>
+<span class="sourceLineNo">353</span>  @VisibleForTesting<a name="line.353"></a>
+<span class="sourceLineNo">354</span>  static void clearDisableFlag() {<a name="line.354"></a>
+<span class="sourceLineNo">355</span>    chunkPoolDisabled = false;<a name="line.355"></a>
+<span class="sourceLineNo">356</span>  }<a name="line.356"></a>
+<span class="sourceLineNo">357</span><a name="line.357"></a>
+<span class="sourceLineNo">358</span>  private MemStoreChunkPool initializePool(long globalMemStoreSize, float poolSizePercentage,<a name="line.358"></a>
+<span class="sourceLineNo">359</span>      float initialCountPercentage) {<a name="line.359"></a>
+<span class="sourceLineNo">360</span>    if (poolSizePercentage &lt;= 0) {<a name="line.360"></a>
+<span class="sourceLineNo">361</span>      LOG.info("PoolSizePercentage is less than 0. So not using pool");<a name="line.361"></a>
+<span class="sourceLineNo">362</span>      return null;<a name="line.362"></a>
+<span class="sourceLineNo">363</span>    }<a name="line.363"></a>
+<span class="sourceLineNo">364</span>    if (chunkPoolDisabled) {<a name="line.364"></a>
+<span class="sourceLineNo">365</span>      return null;<a name="line.365"></a>
+<span class="sourceLineNo">366</span>    }<a name="line.366"></a>
+<span class="sourceLineNo">367</span>    if (poolSizePercentage &gt; 1.0) {<a name="line.367"></a>
+<span class="sourceLineNo">368</span>      throw new IllegalArgumentException(<a name="line.368"></a>
+<span class="sourceLineNo">369</span>          MemStoreLAB.CHUNK_POOL_MAXSIZE_KEY + " must be between 0.0 and 1.0");<a name="line.369"></a>
+<span class="sourceLineNo">370</span>    }<a name="line.370"></a>
+<span class="sourceLineNo">371</span>    int maxCount = (int) (globalMemStoreSize * poolSizePercentage / getChunkSize());<a name="line.371"></a>
+<span class="sourceLineNo">372</span>    if (initialCountPercentage &gt; 1.0 || initialCountPercentage &lt; 0) {<a name="line.372"></a>
+<span class="sourceLineNo">373</span>      throw new IllegalArgumentException(<a name="line.373"></a>
+<span class="sourceLineNo">374</span>          MemStoreLAB.CHUNK_POOL_INITIALSIZE_KEY + " must be between 0.0 and 1.0");<a name="line.374"></a>
+<span class="sourceLineNo">375</span>    }<a name="line.375"></a>
+<span class="sourceLineNo">376</span>    int initialCount = (int) (initialCountPercentage * maxCount);<a name="line.376"></a>
+<span class="sourceLineNo">377</span>    LOG.info("Allocating MemStoreChunkPool with chunk size "<a name="line.377"></a>
+<span class="sourceLineNo">378</span>        + StringUtils.byteDesc(getChunkSize()) + ", max count " + maxCount<a name="line.378"></a>
+<span class="sourceLineNo">379</span>        + ", initial count " + initialCount);<a name="line.379"></a>
+<span class="sourceLineNo">380</span>    return new MemStoreChunkPool(maxCount, initialCount, poolSizePercentage);<a name="line.380"></a>
+<span class="sourceLineNo">381</span>  }<a name="line.381"></a>
+<span class="sourceLineNo">382</span><a name="line.382"></a>
+<span class="sourceLineNo">383</span>  @VisibleForTesting<a name="line.383"></a>
+<span class="sourceLineNo">384</span>  int getMaxCount() {<a name="line.384"></a>
+<span class="sourceLineNo">385</span>    if (pool != null) {<a name="line.385"></a>
+<span class="sourceLineNo">386</span>      return pool.getMaxCount();<a name="line.386"></a>
 <span class="sourceLineNo">387</span>    }<a name="line.387"></a>
-<span class="sourceLineNo">388</span>  }<a name="line.388"></a>
-<span class="sourceLineNo">389</span><a name="line.389"></a>
-<span class="sourceLineNo">390</span>  @VisibleForTesting<a name="line.390"></a>
-<span class="sourceLineNo">391</span>  static void clearDisableFlag() {<a name="line.391"></a>
-<span class="sourceLineNo">392</span>    chunkPoolDisabled = false;<a name="line.392"></a>
-<span class="sourceLineNo">393</span>  }<a name="line.393"></a>
-<span class="sourceLineNo">394</span><a name="line.394"></a>
-<span class="sourceLineNo">395</span>  private MemStoreChunkPool initializePool(long globalMemStoreSize, float poolSizePercentage,<a name="line.395"></a>
-<span class="sourceLineNo">396</span>      float initialCountPercentage) {<a name="line.396"></a>
-<span class="sourceLineNo">397</span>    if (poolSizePercentage &lt;= 0) {<a name="line.397"></a>
-<span class="sourceLineNo">398</span>      LOG.info("PoolSizePercentage is less than 0. So not using pool");<a name="line.398"></a>
-<span class="sourceLineNo">399</span>      return null;<a name="line.399"></a>
-<span class="sourceLineNo">400</span>    }<a name="line.400"></a>
-<span class="sourceLineNo">401</span>    if (chunkPoolDisabled) {<a name="line.401"></a>
-<span class="sourceLineNo">402</span>      return null;<a name="line.402"></a>
-<span class="sourceLineNo">403</span>    }<a name="line.403"></a>
-<span class="sourceLineNo">404</span>    if (poolSizePercentage &gt; 1.0) {<a name="line.404"></a>
-<span class="sourceLineNo">405</span>      throw new IllegalArgumentException(<a name="line.405"></a>
-<span class="sourceLineNo">406</span>          MemStoreLAB.CHUNK_POOL_MAXSIZE_KEY + " must be between 0.0 and 1.0");<a name="line.406"></a>
-<span class="sourceLineNo">407</span>    }<a name="line.407"></a>
-<span class="sourceLineNo">408</span>    int maxCount = (int) (globalMemStoreSize * poolSizePercentage / getChunkSize());<a name="line.408"></a>
-<span class="sourceLineNo">409</span>    if (initialCountPercentage &gt; 1.0 || initialCountPercentage &lt; 0) {<a name="line.409"></a>
-<span class="sourceLineNo">410</span>      throw new IllegalArgumentException(<a name="line.410"></a>
-<span class="sourceLineNo">411</span>          MemStoreLAB.CHUNK_POOL_INITIALSIZE_KEY + " must be between 0.0 and 1.0");<a name="line.411"></a>
-<span class="sourceLineNo">412</span>    }<a name="line.412"></a>
-<span class="sourceLineNo">413</span>    int initialCount = (int) (initialCountPercentage * maxCount);<a name="line.413"></a>
-<span class="sourceLineNo">414</span>    LOG.info("Allocating MemStoreChunkPool with chunk size "<a name="line.414"></a>
-<span class="sourceLineNo">415</span>        + StringUtils.byteDesc(getChunkSize()) + ", max count " + maxCount<a name="line.415"></a>
-<span class="sourceLineNo">416</span>        + ", initial count " + initialCount);<a name="line.416"></a>
-<span class="sourceLineNo">417</span>    return new MemStoreChunkPool(maxCount, initialCount, poolSizePercentage);<a name="line.417"></a>
-<span class="sourceLineNo">418</span>  }<a name="line.418"></a>
-<span class="sourceLineNo">419</span><a name="line.419"></a>
-<span class="sourceLineNo">420</span>  @VisibleForTesting<a name="line.420"></a>
-<span class="sourceLineNo">421</span>  int getMaxCount() {<a name="line.421"></a>
-<span class="sourceLineNo">422</span>    if (pool != null) {<a name="line.422"></a>
-<span class="sourceLineNo">423</span>      return pool.getMaxCount();<a name="line.423"></a>
-<span class="sourceLineNo">424</span>    }<a name="line.424"></a>
-<span class="sourceLineNo">425</span>    return 0;<a name="line.425"></a>
-<span class="sourceLineNo">426</span>  }<a name="line.426"></a>
-<span class="sourceLineNo">427</span><a name="line.427"></a>
-<span class="sourceLineNo">428</span>  @VisibleForTesting<a name="line.428"></a>
-<span class="sourceLineNo">429</span>  int getPoolSize() {<a name="line.429"></a>
-<span class="sourceLineNo">430</span>    if (pool != null) {<a name="line.430"></a>
-<span class="sourceLineNo">431</span>      return pool.reclaimedChunks.size();<a name="line.431"></a>
-<span class="sourceLineNo">432</span>    }<a name="line.432"></a>
-<span class="sourceLineNo">433</span>    return 0;<a name="line.433"></a>
-<span class="sourceLineNo">434</span>  }<a name="line.434"></a>
-<span class="sourceLineNo">435</span><a name="line.435"></a>
-<span class="sourceLineNo">436</span>  /*<a name="line.436"></a>
-<span class="sourceLineNo">437</span>   * Only used in testing<a name="line.437"></a>
-<span class="sourceLineNo">438</span>   */<a name="line.438"></a>
-<span class="sourceLineNo">439</span>  @VisibleForTesting<a name="line.439"></a>
-<span class="sourceLineNo">440</span>  void clearChunksInPool() {<a name="line.440"></a>
-<span class="sourceLineNo">441</span>    if (pool != null) {<a name="line.441"></a>
-<span class="sourceLineNo">442</span>      pool.reclaimedChunks.clear();<a name="line.442"></a>
-<span class="sourceLineNo">443</span>    }<a name="line.443"></a>
-<span class="sourceLineNo">444</span>  }<a name="line.444"></a>
-<span class="sourceLineNo">445</span><a name="line.445"></a>
-<span class="sourceLineNo">446</span>  synchronized void putbackChunks(Set&lt;Integer&gt; chunks) {<a name="line.446"></a>
-<span class="sourceLineNo">447</span>    if (pool != null) {<a name="line.447"></a>
-<span class="sourceLineNo">448</span>      pool.putbackChunks(chunks);<a name="line.448"></a>
-<span class="sourceLineNo">449</span>    } else {<a name="line.449"></a>
-<span class="sourceLineNo">450</span>      this.removeChunks(chunks);<a name="line.450"></a>
-<span class="sourceLineNo">451</span>    }<a name="line.451"></a>
-<span class="sourceLineNo">452</span>  }<a name="line.452"></a>
-<span class="sourceLineNo">453</span>}<a name="line.453"></a>
+<span class="sourceLineNo">388</span>    return 0;<a name="line.388"></a>
+<span class="sourceLineNo">389</span>  }<a name="line.389"></a>
+<span class="sourceLineNo">390</span><a name="line.390"></a>
+<span class="sourceLineNo">391</span>  @VisibleForTesting<a name="line.391"></a>
+<span class="sourceLineNo">392</span>  int getPoolSize() {<a name="line.392"></a>
+<span class="sourceLineNo">393</span>    if (pool != null) {<a name="line.393"></a>
+<span class="sourceLineNo">394</span>      return pool.reclaimedChunks.size();<a name="line.394"></a>
+<span class="sourceLineNo">395</span>    }<a name="line.395"></a>
+<span class="sourceLineNo">396</span>    return 0;<a name="line.396"></a>
+<span class="sourceLineNo">397</span>  }<a name="line.397"></a>
+<span class="sourceLineNo">398</span><a name="line.398"></a>
+<span class="sourceLineNo">399</span>  @VisibleForTesting<a name="line.399"></a>
+<span class="sourceLineNo">400</span>  boolean isChunkInPool(int chunkId) {<a name="line.400"></a>
+<span class="sourceLineNo">401</span>    if (pool != null) {<a name="line.401"></a>
+<span class="sourceLineNo">402</span>      // chunks that are from pool will return true chunk reference not null<a name="line.402"></a>
+<span class="sourceLineNo">403</span>      Chunk c = getChunk(chunkId);<a name="line.403"></a>
+<span class="sourceLineNo">404</span>      if (c==null) {<a name="line.404"></a>
+<span class="sourceLineNo">405</span>        return false;<a name="line.405"></a>
+<span class="sourceLineNo">406</span>      }<a name="line.406"></a>
+<span class="sourceLineNo">407</span>      return pool.reclaimedChunks.contains(c);<a name="line.407"></a>
+<span class="sourceLineNo">408</span>    }<a name="line.408"></a>
+<span class="sourceLineNo">409</span><a name="line.409"></a>
+<span class="sourceLineNo">410</span>    return false;<a name="line.410"></a>
+<span class="sourceLineNo">411</span>  }<a name="line.411"></a>
+<span class="sourceLineNo">412</span><a name="line.412"></a>
+<span class="sourceLineNo">413</span>  /*<a name="line.413"></a>
+<span class="sourceLineNo">414</span>   * Only used in testing<a name="line.414"></a>
+<span class="sourceLineNo">415</span>   */<a name="line.415"></a>
+<span class="sourceLineNo">416</span>  @VisibleForTesting<a name="line.416"></a>
+<span class="sourceLineNo">417</span>  void clearChunksInPool() {<a name="line.417"></a>
+<span class="sourceLineNo">418</span>    if (pool != null) {<a name="line.418"></a>
+<span class="sourceLineNo">419</span>      pool.reclaimedChunks.clear();<a name="line.419"></a>
+<span class="sourceLineNo">420</span>    }<a name="line.420"></a>
+<span class="sourceLineNo">421</span>  }<a name="line.421"></a>
+<span class="sourceLineNo">422</span><a name="line.422"></a>
+<span class="sourceLineNo">423</span>  synchronized void putbackChunks(Set&lt;Integer&gt; chunks) {<a name="line.423"></a>
+<span class="sourceLineNo">424</span>    // if there is no pool just try to clear the chunkIdMap in case there is something<a name="line.424"></a>
+<span class="sourceLineNo">425</span>    if ( pool == null ) {<a name="line.425"></a>
+<span class="sourceLineNo">426</span>      this.removeChunks(chunks);<a name="line.426"></a>
+<span class="sourceLineNo">427</span>      return;<a name="line.427"></a>
+<span class="sourceLineNo">428</span>    }<a name="line.428"></a>
+<span class="sourceLineNo">429</span><a name="line.429"></a>
+<span class="sourceLineNo">430</span>    // if there is pool, go over all chunk IDs that came back, the chunks may be from pool or not<a name="line.430"></a>
+<span class="sourceLineNo">431</span>    for (int chunkID : chunks) {<a name="line.431"></a>
+<span class="sourceLineNo">432</span>      // translate chunk ID to chunk, if chunk initially wasn't in pool<a name="line.432"></a>
+<span class="sourceLineNo">433</span>      // this translation will (most likely) return null<a name="line.433"></a>
+<span class="sourceLineNo">434</span>      Chunk chunk = ChunkCreator.this.getChunk(chunkID);<a name="line.434"></a>
+<span class="sourceLineNo">435</span>      if (chunk != null) {<a name="line.435"></a>
+<span class="sourceLineNo">436</span>        pool.putbackChunks(chunk);<a name="line.436"></a>
+<span class="sourceLineNo">437</span>      }<a name="line.437"></a>
+<span class="sourceLineNo">438</span>      // if chunk is null, it was never covered by the chunkIdMap (and so wasn't in pool also),<a name="line.438"></a>
+<span class="sourceLineNo">439</span>      // so we have nothing to do on its release<a name="line.439"></a>
+<span class="sourceLineNo">440</span>    }<a name="line.440"></a>
+<span class="sourceLineNo">441</span>    return;<a name="line.441"></a>
+<span class="sourceLineNo">442</span>  }<a name="line.442"></a>
+<span class="sourceLineNo">443</span><a name="line.443"></a>
+<span class="sourceLineNo">444</span>}<a name="line.444"></a>
 
 
 


Mime
View raw message