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| <div class="subTitle">org.apache.hadoop.hbase.regionserver</div> |
| <h2 title="Class ChunkCreator.MemStoreChunkPool" class="title">Class ChunkCreator.MemStoreChunkPool</h2> |
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| <li>org.apache.hadoop.hbase.regionserver.ChunkCreator.MemStoreChunkPool</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.HeapMemoryTuneObserver.html" title="interface in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.HeapMemoryTuneObserver</a></dd> |
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| <dl> |
| <dt>Enclosing class:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.html" title="class in org.apache.hadoop.hbase.regionserver">ChunkCreator</a></dd> |
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| <pre>private class <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.html#line.321">ChunkCreator.MemStoreChunkPool</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.HeapMemoryTuneObserver.html" title="interface in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.HeapMemoryTuneObserver</a></pre> |
| <div class="block">A pool of <a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver"><code>Chunk</code></a> instances. |
| |
| MemStoreChunkPool caches a number of retired chunks for reusing, it could |
| decrease allocating bytes when writing, thereby optimizing the garbage |
| collection on JVM.</div> |
| </li> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.StatisticsThread.html" title="class in org.apache.hadoop.hbase.regionserver">ChunkCreator.MemStoreChunkPool.StatisticsThread</a></span></code> </td> |
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| <h3>Field Summary</h3> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicLong.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicLong</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#chunkCount">chunkCount</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#chunkSize">chunkSize</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#label">label</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#maxCount">maxCount</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#poolSizePercentage">poolSizePercentage</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/BlockingQueue.html?is-external=true" title="class or interface in java.util.concurrent">BlockingQueue</a><<a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#reclaimedChunks">reclaimedChunks</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/LongAdder.html?is-external=true" title="class or interface in java.util.concurrent.atomic">LongAdder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#reusedChunkCount">reusedChunkCount</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ScheduledExecutorService.html?is-external=true" title="class or interface in java.util.concurrent">ScheduledExecutorService</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#scheduleThreadPool">scheduleThreadPool</a></span></code> |
| <div class="block">Statistics thread schedule pool</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#statThreadPeriod">statThreadPeriod</a></span></code> |
| <div class="block">Statistics thread</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#MemStoreChunkPool-java.lang.String-int-int-int-float-">MemStoreChunkPool</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label, |
| int chunkSize, |
| int maxCount, |
| int initialCount, |
| float poolSizePercentage)</code> </td> |
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| <h3>Method Summary</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
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| <td class="colFirst"><code>(package private) <a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#getChunk--">getChunk</a></span>()</code> |
| <div class="block">Poll a chunk from the pool, reset it if not null, else create a new chunk to return if we have |
| not yet created max allowed chunks count.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#getChunk-org.apache.hadoop.hbase.regionserver.CompactingMemStore.IndexType-">getChunk</a></span>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/CompactingMemStore.IndexType.html" title="enum in org.apache.hadoop.hbase.regionserver">CompactingMemStore.IndexType</a> chunkIndexType)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#getChunkSize--">getChunkSize</a></span>()</code> </td> |
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| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#getMaxCount--">getMaxCount</a></span>()</code> </td> |
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| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#onHeapMemoryTune-long-long-">onHeapMemoryTune</a></span>(long newMemstoreSize, |
| long newBlockCacheSize)</code> |
| <div class="block">This method would be called by HeapMemoryManger when a heap memory tune action took place.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#putbackChunks-org.apache.hadoop.hbase.regionserver.Chunk-">putbackChunks</a></span>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a> c)</code> |
| <div class="block">Add the chunks to the pool, when the pool achieves the max size, it will skip the remaining |
| chunks</div> |
| </td> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <h3>Constructor Detail</h3> |
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| <h4>MemStoreChunkPool</h4> |
| <pre><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.337">MemStoreChunkPool</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label, |
| int chunkSize, |
| int maxCount, |
| int initialCount, |
| float poolSizePercentage)</pre> |
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| <h4>getChunk</h4> |
| <pre><a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.366">getChunk</a>()</pre> |
| <div class="block">Poll a chunk from the pool, reset it if not null, else create a new chunk to return if we have |
| not yet created max allowed chunks count. When we have already created max allowed chunks and |
| no free chunks as of now, return null. It is the responsibility of the caller to make a chunk |
| then. |
| Note: Chunks returned by this pool must be put back to the pool after its use.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a chunk</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#putbackChunks-org.apache.hadoop.hbase.regionserver.Chunk-"><code>putbackChunks(Chunk)</code></a></dd> |
| </dl> |
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| <h4>getChunk</h4> |
| <pre><a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.370">getChunk</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/CompactingMemStore.IndexType.html" title="enum in org.apache.hadoop.hbase.regionserver">CompactingMemStore.IndexType</a> chunkIndexType)</pre> |
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| <h4>getChunkSize</h4> |
| <pre>int <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.392">getChunkSize</a>()</pre> |
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| <a name="putbackChunks-org.apache.hadoop.hbase.regionserver.Chunk-"> |
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| <pre>private void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.401">putbackChunks</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Chunk.html" title="class in org.apache.hadoop.hbase.regionserver">Chunk</a> c)</pre> |
| <div class="block">Add the chunks to the pool, when the pool achieves the max size, it will skip the remaining |
| chunks</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>c</code> - </dd> |
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| <pre>private int <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.435">getMaxCount</a>()</pre> |
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| <h4>onHeapMemoryTune</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/ChunkCreator.MemStoreChunkPool.html#line.440">onHeapMemoryTune</a>(long newMemstoreSize, |
| long newBlockCacheSize)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.HeapMemoryTuneObserver.html#onHeapMemoryTune-long-long-">HeapMemoryManager.HeapMemoryTuneObserver</a></code></span></div> |
| <div class="block">This method would be called by HeapMemoryManger when a heap memory tune action took place.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.HeapMemoryTuneObserver.html#onHeapMemoryTune-long-long-">onHeapMemoryTune</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/regionserver/HeapMemoryManager.HeapMemoryTuneObserver.html" title="interface in org.apache.hadoop.hbase.regionserver">HeapMemoryManager.HeapMemoryTuneObserver</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newMemstoreSize</code> - The newly calculated global memstore size</dd> |
| <dd><code>newBlockCacheSize</code> - The newly calculated global blockcache size</dd> |
| </dl> |
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