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From git-site-r...@apache.org
Subject [17/51] [partial] hbase-site git commit: Published site at 82d554e3783372cc6b05489452c815b57c06f6cd.
Date Thu, 11 May 2017 14:59:33 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1241ee85/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/StoreScanner.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/StoreScanner.html b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/StoreScanner.html
index 573de43..4e9c7c3 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/StoreScanner.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/regionserver/StoreScanner.html
@@ -32,1012 +32,1081 @@
 <span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
 <span class="sourceLineNo">025</span>import java.io.InterruptedIOException;<a name="line.25"></a>
 <span class="sourceLineNo">026</span>import java.util.ArrayList;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.NavigableSet;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.concurrent.CountDownLatch;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.30"></a>
-<span class="sourceLineNo">031</span><a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.commons.logging.LogFactory;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.Cell;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HConstants;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.client.IsolationLevel;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.executor.ExecutorService;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.filter.Filter;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.regionserver.ScannerContext.LimitScope;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.regionserver.ScannerContext.NextState;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.handler.ParallelSeekHandler;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.querymatcher.CompactionScanQueryMatcher;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.querymatcher.LegacyScanQueryMatcher;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.querymatcher.UserScanQueryMatcher;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.53"></a>
-<span class="sourceLineNo">054</span><a name="line.54"></a>
-<span class="sourceLineNo">055</span>/**<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * Scanner scans both the memstore and the Store. Coalesce KeyValue stream<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * into List&amp;lt;KeyValue&amp;gt; for a single row.<a name="line.57"></a>
-<span class="sourceLineNo">058</span> */<a name="line.58"></a>
-<span class="sourceLineNo">059</span>@InterfaceAudience.Private<a name="line.59"></a>
-<span class="sourceLineNo">060</span>public class StoreScanner extends NonReversedNonLazyKeyValueScanner<a name="line.60"></a>
-<span class="sourceLineNo">061</span>    implements KeyValueScanner, InternalScanner, ChangedReadersObserver {<a name="line.61"></a>
-<span class="sourceLineNo">062</span>  private static final Log LOG = LogFactory.getLog(StoreScanner.class);<a name="line.62"></a>
-<span class="sourceLineNo">063</span>  // In unit tests, the store could be null<a name="line.63"></a>
-<span class="sourceLineNo">064</span>  protected final Store store;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>  protected ScanQueryMatcher matcher;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>  protected KeyValueHeap heap;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>  protected boolean cacheBlocks;<a name="line.67"></a>
-<span class="sourceLineNo">068</span><a name="line.68"></a>
-<span class="sourceLineNo">069</span>  protected long countPerRow = 0;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>  protected int storeLimit = -1;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>  protected int storeOffset = 0;<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span>  // Used to indicate that the scanner has closed (see HBASE-1107)<a name="line.73"></a>
-<span class="sourceLineNo">074</span>  // Doesnt need to be volatile because it's always accessed via synchronized methods<a name="line.74"></a>
-<span class="sourceLineNo">075</span>  protected boolean closing = false;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>  protected final boolean get;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>  protected final boolean explicitColumnQuery;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>  protected final boolean useRowColBloom;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>  /**<a name="line.79"></a>
-<span class="sourceLineNo">080</span>   * A flag that enables StoreFileScanner parallel-seeking<a name="line.80"></a>
-<span class="sourceLineNo">081</span>   */<a name="line.81"></a>
-<span class="sourceLineNo">082</span>  protected boolean parallelSeekEnabled = false;<a name="line.82"></a>
-<span class="sourceLineNo">083</span>  protected ExecutorService executor;<a name="line.83"></a>
-<span class="sourceLineNo">084</span>  protected final Scan scan;<a name="line.84"></a>
-<span class="sourceLineNo">085</span>  protected final NavigableSet&lt;byte[]&gt; columns;<a name="line.85"></a>
-<span class="sourceLineNo">086</span>  protected final long oldestUnexpiredTS;<a name="line.86"></a>
-<span class="sourceLineNo">087</span>  protected final long now;<a name="line.87"></a>
-<span class="sourceLineNo">088</span>  protected final int minVersions;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>  protected final long maxRowSize;<a name="line.89"></a>
-<span class="sourceLineNo">090</span>  protected final long cellsPerHeartbeatCheck;<a name="line.90"></a>
-<span class="sourceLineNo">091</span><a name="line.91"></a>
-<span class="sourceLineNo">092</span>  // Collects all the KVHeap that are eagerly getting closed during the<a name="line.92"></a>
-<span class="sourceLineNo">093</span>  // course of a scan<a name="line.93"></a>
-<span class="sourceLineNo">094</span>  protected List&lt;KeyValueHeap&gt; heapsForDelayedClose = new ArrayList&lt;&gt;();<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>   * The number of KVs seen by the scanner. Includes explicitly skipped KVs, but not<a name="line.97"></a>
-<span class="sourceLineNo">098</span>   * KVs skipped via seeking to next row/column. TODO: estimate them?<a name="line.98"></a>
-<span class="sourceLineNo">099</span>   */<a name="line.99"></a>
-<span class="sourceLineNo">100</span>  private long kvsScanned = 0;<a name="line.100"></a>
-<span class="sourceLineNo">101</span>  private Cell prevCell = null;<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span>  /** We don't ever expect to change this, the constant is just for clarity. */<a name="line.103"></a>
-<span class="sourceLineNo">104</span>  static final boolean LAZY_SEEK_ENABLED_BY_DEFAULT = true;<a name="line.104"></a>
-<span class="sourceLineNo">105</span>  public static final String STORESCANNER_PARALLEL_SEEK_ENABLE =<a name="line.105"></a>
-<span class="sourceLineNo">106</span>      "hbase.storescanner.parallel.seek.enable";<a name="line.106"></a>
+<span class="sourceLineNo">027</span>import java.util.HashMap;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.NavigableSet;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.concurrent.CountDownLatch;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.concurrent.locks.ReentrantLock;<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.Cell;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.CellComparator;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HConstants;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.KeyValue;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.IsolationLevel;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.executor.ExecutorService;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.filter.Filter;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.regionserver.ScannerContext.LimitScope;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.regionserver.ScannerContext.NextState;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.regionserver.handler.ParallelSeekHandler;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.regionserver.querymatcher.CompactionScanQueryMatcher;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.regionserver.querymatcher.LegacyScanQueryMatcher;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.regionserver.querymatcher.ScanQueryMatcher;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.regionserver.querymatcher.UserScanQueryMatcher;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.55"></a>
+<span class="sourceLineNo">056</span><a name="line.56"></a>
+<span class="sourceLineNo">057</span>/**<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * Scanner scans both the memstore and the Store. Coalesce KeyValue stream into List&amp;lt;KeyValue&amp;gt;<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * for a single row.<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * &lt;p&gt;<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * The implementation is not thread safe. So there will be no race between next and close. The only<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * exception is updateReaders, it will be called in the memstore flush thread to indicate that there<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * is a flush.<a name="line.63"></a>
+<span class="sourceLineNo">064</span> */<a name="line.64"></a>
+<span class="sourceLineNo">065</span>@InterfaceAudience.Private<a name="line.65"></a>
+<span class="sourceLineNo">066</span>public class StoreScanner extends NonReversedNonLazyKeyValueScanner<a name="line.66"></a>
+<span class="sourceLineNo">067</span>    implements KeyValueScanner, InternalScanner, ChangedReadersObserver {<a name="line.67"></a>
+<span class="sourceLineNo">068</span>  private static final Log LOG = LogFactory.getLog(StoreScanner.class);<a name="line.68"></a>
+<span class="sourceLineNo">069</span>  // In unit tests, the store could be null<a name="line.69"></a>
+<span class="sourceLineNo">070</span>  protected final Store store;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>  private ScanQueryMatcher matcher;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>  protected KeyValueHeap heap;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>  private boolean cacheBlocks;<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span>  private long countPerRow = 0;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>  private int storeLimit = -1;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>  private int storeOffset = 0;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span>  // Used to indicate that the scanner has closed (see HBASE-1107)<a name="line.79"></a>
+<span class="sourceLineNo">080</span>  // Do not need to be volatile because it's always accessed via synchronized methods<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  private boolean closing = false;<a name="line.81"></a>
+<span class="sourceLineNo">082</span>  private final boolean get;<a name="line.82"></a>
+<span class="sourceLineNo">083</span>  private final boolean explicitColumnQuery;<a name="line.83"></a>
+<span class="sourceLineNo">084</span>  private final boolean useRowColBloom;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>  /**<a name="line.85"></a>
+<span class="sourceLineNo">086</span>   * A flag that enables StoreFileScanner parallel-seeking<a name="line.86"></a>
+<span class="sourceLineNo">087</span>   */<a name="line.87"></a>
+<span class="sourceLineNo">088</span>  private boolean parallelSeekEnabled = false;<a name="line.88"></a>
+<span class="sourceLineNo">089</span>  private ExecutorService executor;<a name="line.89"></a>
+<span class="sourceLineNo">090</span>  private final Scan scan;<a name="line.90"></a>
+<span class="sourceLineNo">091</span>  private final long oldestUnexpiredTS;<a name="line.91"></a>
+<span class="sourceLineNo">092</span>  private final long now;<a name="line.92"></a>
+<span class="sourceLineNo">093</span>  private final int minVersions;<a name="line.93"></a>
+<span class="sourceLineNo">094</span>  private final long maxRowSize;<a name="line.94"></a>
+<span class="sourceLineNo">095</span>  private final long cellsPerHeartbeatCheck;<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span>  // Collects all the KVHeap that are eagerly getting closed during the<a name="line.97"></a>
+<span class="sourceLineNo">098</span>  // course of a scan<a name="line.98"></a>
+<span class="sourceLineNo">099</span>  private final List&lt;KeyValueHeap&gt; heapsForDelayedClose = new ArrayList&lt;&gt;();<a name="line.99"></a>
+<span class="sourceLineNo">100</span><a name="line.100"></a>
+<span class="sourceLineNo">101</span>  /**<a name="line.101"></a>
+<span class="sourceLineNo">102</span>   * The number of KVs seen by the scanner. Includes explicitly skipped KVs, but not<a name="line.102"></a>
+<span class="sourceLineNo">103</span>   * KVs skipped via seeking to next row/column. TODO: estimate them?<a name="line.103"></a>
+<span class="sourceLineNo">104</span>   */<a name="line.104"></a>
+<span class="sourceLineNo">105</span>  private long kvsScanned = 0;<a name="line.105"></a>
+<span class="sourceLineNo">106</span>  private Cell prevCell = null;<a name="line.106"></a>
 <span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span>  /** Used during unit testing to ensure that lazy seek does save seek ops */<a name="line.108"></a>
-<span class="sourceLineNo">109</span>  protected static boolean lazySeekEnabledGlobally =<a name="line.109"></a>
-<span class="sourceLineNo">110</span>      LAZY_SEEK_ENABLED_BY_DEFAULT;<a name="line.110"></a>
-<span class="sourceLineNo">111</span><a name="line.111"></a>
-<span class="sourceLineNo">112</span>  /**<a name="line.112"></a>
-<span class="sourceLineNo">113</span>   * The number of cells scanned in between timeout checks. Specifying a larger value means that<a name="line.113"></a>
-<span class="sourceLineNo">114</span>   * timeout checks will occur less frequently. Specifying a small value will lead to more frequent<a name="line.114"></a>
-<span class="sourceLineNo">115</span>   * timeout checks.<a name="line.115"></a>
-<span class="sourceLineNo">116</span>   */<a name="line.116"></a>
-<span class="sourceLineNo">117</span>  public static final String HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK =<a name="line.117"></a>
-<span class="sourceLineNo">118</span>      "hbase.cells.scanned.per.heartbeat.check";<a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span>  /**<a name="line.120"></a>
-<span class="sourceLineNo">121</span>   * Default value of {@link #HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK}.<a name="line.121"></a>
-<span class="sourceLineNo">122</span>   */<a name="line.122"></a>
-<span class="sourceLineNo">123</span>  public static final long DEFAULT_HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK = 10000;<a name="line.123"></a>
-<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span>  // if heap == null and lastTop != null, you need to reseek given the key below<a name="line.125"></a>
-<span class="sourceLineNo">126</span>  protected Cell lastTop = null;<a name="line.126"></a>
-<span class="sourceLineNo">127</span><a name="line.127"></a>
-<span class="sourceLineNo">128</span>  // A flag whether use pread for scan<a name="line.128"></a>
-<span class="sourceLineNo">129</span>  private final boolean scanUsePread;<a name="line.129"></a>
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-<span class="sourceLineNo">131</span>  protected volatile boolean flushed = false;<a name="line.131"></a>
-<span class="sourceLineNo">132</span>  // generally we get one file from a flush<a name="line.132"></a>
-<span class="sourceLineNo">133</span>  protected List&lt;StoreFile&gt; flushedStoreFiles = new ArrayList&lt;&gt;(1);<a name="line.133"></a>
-<span class="sourceLineNo">134</span>  // The current list of scanners<a name="line.134"></a>
-<span class="sourceLineNo">135</span>  protected List&lt;KeyValueScanner&gt; currentScanners = new ArrayList&lt;&gt;();<a name="line.135"></a>
-<span class="sourceLineNo">136</span>  // flush update lock<a name="line.136"></a>
-<span class="sourceLineNo">137</span>  private ReentrantLock flushLock = new ReentrantLock();<a name="line.137"></a>
+<span class="sourceLineNo">108</span>  private final long preadMaxBytes;<a name="line.108"></a>
+<span class="sourceLineNo">109</span>  private long bytesRead;<a name="line.109"></a>
+<span class="sourceLineNo">110</span><a name="line.110"></a>
+<span class="sourceLineNo">111</span>  /** We don't ever expect to change this, the constant is just for clarity. */<a name="line.111"></a>
+<span class="sourceLineNo">112</span>  static final boolean LAZY_SEEK_ENABLED_BY_DEFAULT = true;<a name="line.112"></a>
+<span class="sourceLineNo">113</span>  public static final String STORESCANNER_PARALLEL_SEEK_ENABLE =<a name="line.113"></a>
+<span class="sourceLineNo">114</span>      "hbase.storescanner.parallel.seek.enable";<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span>  /** Used during unit testing to ensure that lazy seek does save seek ops */<a name="line.116"></a>
+<span class="sourceLineNo">117</span>  private static boolean lazySeekEnabledGlobally = LAZY_SEEK_ENABLED_BY_DEFAULT;<a name="line.117"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span>  /**<a name="line.119"></a>
+<span class="sourceLineNo">120</span>   * The number of cells scanned in between timeout checks. Specifying a larger value means that<a name="line.120"></a>
+<span class="sourceLineNo">121</span>   * timeout checks will occur less frequently. Specifying a small value will lead to more frequent<a name="line.121"></a>
+<span class="sourceLineNo">122</span>   * timeout checks.<a name="line.122"></a>
+<span class="sourceLineNo">123</span>   */<a name="line.123"></a>
+<span class="sourceLineNo">124</span>  public static final String HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK =<a name="line.124"></a>
+<span class="sourceLineNo">125</span>      "hbase.cells.scanned.per.heartbeat.check";<a name="line.125"></a>
+<span class="sourceLineNo">126</span><a name="line.126"></a>
+<span class="sourceLineNo">127</span>  /**<a name="line.127"></a>
+<span class="sourceLineNo">128</span>   * Default value of {@link #HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK}.<a name="line.128"></a>
+<span class="sourceLineNo">129</span>   */<a name="line.129"></a>
+<span class="sourceLineNo">130</span>  public static final long DEFAULT_HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK = 10000;<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>
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+<span class="sourceLineNo">275</span><a name="line.275"></a>
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+<span class="sourceLineNo">279</span>   * Opens a scanner across specified StoreFiles.<a name="line.279"></a>
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+<span class="sourceLineNo">284</span>   * @param dropDeletesFromRow The inclusive left bound of the range; can be EMPTY_START_ROW.<a name="line.284"></a>
+<span class="sourceLineNo">285</span>   * @param dropDeletesToRow The exclusive right bound of the range; can be EMPTY_END_ROW.<a name="line.285"></a>
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+<span class="sourceLineNo">292</span>  }<a name="line.292"></a>
+<span class="sourceLineNo">293</span><a name="line.293"></a>
+<span class="sourceLineNo">294</span>  private StoreScanner(Store store, ScanInfo scanInfo, Scan scan,<a name="line.294"></a>
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+<span class="sourceLineNo">301</span>        || !scan.getTimeRange().isAllTime()) {<a name="line.301"></a>
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+<span class="sourceLineNo">305</span>        earliestPutTs, oldestUnexpiredTS, now, dropDeletesFromRow, dropDeletesToRow,<a name="line.305"></a>
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+<span class="sourceLineNo">307</span>    } else {<a name="line.307"></a>
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+<span class="sourceLineNo">309</span>        earliestPutTs, oldestUnexpiredTS, now, dropDeletesFromRow, dropDeletesToRow,<a name="line.309"></a>
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+<span class="sourceLineNo">312</span><a name="line.312"></a>
+<span class="sourceLineNo">313</span>    // Filter the list of scanners using Bloom filters, time range, TTL, etc.<a name="line.313"></a>
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+<span class="sourceLineNo">315</span><a name="line.315"></a>
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+<span class="sourceLineNo">318</span>    addCurrentScanners(scanners);<a name="line.318"></a>
+<span class="sourceLineNo">319</span>    // Combine all seeked scanners with a heap<a name="line.319"></a>
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+<span class="sourceLineNo">322</span><a name="line.322"></a>
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+<span class="sourceLineNo">328</span>        HConstants.LATEST_TIMESTAMP,<a name="line.328"></a>
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+<span class="sourceLineNo">342</span><a name="line.342"></a>
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+<span class="sourceLineNo">356</span>        // to keep compatibility for coprocessor.<a name="line.356"></a>
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+<span class="sourceLineNo">364</span><a name="line.364"></a>
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+<span class="sourceLineNo">370</span><a name="line.370"></a>
+<span class="sourceLineNo">371</span>  /**<a name="line.371"></a>
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+<span class="sourceLineNo">380</span><a name="line.380"></a>
+<span class="sourceLineNo">381</span>  /**<a name="line.381"></a>
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+<span class="sourceLineNo">387</span>   * @throws IOException<a name="line.387"></a>
+<span class="sourceLineNo">388</span>   */<a name="line.388"></a>
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+<span class="sourceLineNo">390</span>      Cell seekKey, boolean isLazy, boolean isParallelSeek)<a name="line.390"></a>
+<span class="sourceLineNo">391</span>      throws IOException {<a name="line.391"></a>
+<span class="sourceLineNo">392</span>    // Seek all scanners to the start of the Row (or if the exact matching row<a name="line.392"></a>
+<span class="sourceLineNo">393</span>    // key does not exist, then to the start of the next matching Row).<a name="line.393"></a>
+<span class="sourceLineNo">394</span>    // Always check bloom filter to optimize the top row seek for delete<a name="line.394"></a>
+<span class="sourceLineNo">395</span>    // family marker.<a name="line.395"></a>
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+<span class="sourceLineNo">406</span>              + ", but row is bigger than that");<a name="line.406"></a>
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+<span class="sourceLineNo">414</span>      } else {<a name="line.414"></a>
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+<span class="sourceLineNo">422</span>    // Combine all seeked scanners with a heap<a name="line.422"></a>
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+<span class="sourceLineNo">424</span>  }<a name="line.424"></a>
+<span class="sourceLineNo">425</span><a name="line.425"></a>
+<span class="sourceLineNo">426</span>  /**<a name="line.426"></a>
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+<span class="sourceLineNo">428</span>   * TTL.<a name="line.428"></a>
+<span class="sourceLineNo">429</span>   * &lt;p&gt;<a name="line.429"></a>
+<span class="sourceLineNo">430</span>   * Will be overridden by testcase so declared as protected.<a name="line.430"></a>
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+<span class="sourceLineNo">432</span>  @VisibleForTesting<a name="line.432"></a>
+<span class="sourceLineNo">433</span>  protected List&lt;KeyValueScanner&gt; selectScannersFrom(<a name="line.433"></a>
+<span class="sourceLineNo">434</span>      final List&lt;? extends KeyValueScanner&gt; allScanners) {<a name="line.434"></a>
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+<span class="sourceLineNo">436</span>    boolean filesOnly;<a name="line.436"></a>
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+<span class="sourceLineNo">439</span>      memOnly = iscan.isCheckOnlyMemStore();<a name="line.439"></a>
+<span class="sourceLineNo">440</span>      filesOnly = iscan.isCheckOnlyStoreFiles();<a name="line.440"></a>
+<span class="sourceLineNo">441</span>    } else {<a name="line.441"></a>
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+<span class="sourceLineNo">443</span>      filesOnly = false;<a name="line.443"></a>
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+<span class="sourceLineNo">445</span><a name="line.445"></a>
+<span class="sourceLineNo">446</span>    List&lt;KeyValueScanner&gt; scanners = new ArrayList&lt;&gt;(allScanners.size());<a name="line.446"></a>
+<span class="sourceLineNo">447</span><a name="line.447"></a>
+<span class="sourceLineNo">448</span>    // We can only exclude store files based on TTL if minVersions is set to 0.<a name="line.448"></a>
+<span class="sourceLineNo">449</span>    // Otherwise, we might have to return KVs that have technically expired.<a name="line.449"></a>
+<span class="sourceLineNo">450</span>    long expiredTimestampCutoff = minVersions == 0 ? oldestUnexpiredTS: Long.MIN_VALUE;<a name="line.450"></a>
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-<span class="sourceLineNo">460</span>  @Override<a name="line.460"></a>
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-<span class="sourceLineNo">466</span>  @Override<a name="line.466"></a>
-<span class="sourc

<TRUNCATED>

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