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<div class="subTitle">org.apache.hadoop.hbase.io.hfile</div>
<h2 title="Class CombinedBlockCache" class="title">Class CombinedBlockCache</h2>
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<li>org.apache.hadoop.hbase.io.hfile.CombinedBlockCache</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;, <a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="interface in org.apache.hadoop.hbase.io">HeapSize</a>, <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>, <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">ResizableBlockCache</a></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/InclusiveCombinedBlockCache.html" title="class in org.apache.hadoop.hbase.io.hfile">InclusiveCombinedBlockCache</a></dd>
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<pre>@InterfaceAudience.Private
public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.38">CombinedBlockCache</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/io/hfile/ResizableBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">ResizableBlockCache</a>, <a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="interface in org.apache.hadoop.hbase.io">HeapSize</a></pre>
<div class="block">CombinedBlockCache is an abstraction layer that combines
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile"><code>FirstLevelBlockCache</code></a> and <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketCache</code></a>. The smaller lruCache is used
to cache bloom blocks and index blocks. The larger Cache is used to
cache data blocks. <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-"><code>getBlock(BlockCacheKey, boolean, boolean, boolean)</code></a> reads
first from the smaller l1Cache before looking for the block in the l2Cache. Blocks evicted
from l1Cache are put into the bucket cache.
Metrics are the combined size and hits and misses of both caches.</div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.CombinedCacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CombinedBlockCache.CombinedCacheStats</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.CombinedCacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CombinedBlockCache.CombinedCacheStats</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#combinedCacheStats">combinedCacheStats</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#l1Cache">l1Cache</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#l2Cache">l2Cache</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#CombinedBlockCache-org.apache.hadoop.hbase.io.hfile.FirstLevelBlockCache-org.apache.hadoop.hbase.io.hfile.BlockCache-">CombinedBlockCache</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a>&nbsp;l1Cache,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>&nbsp;l2Cache)</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">cacheBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;buf)</code>
<div class="block">Add block to cache (defaults to not in-memory).</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">cacheBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;buf,
boolean&nbsp;inMemory)</code>
<div class="block">Add block to cache.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">evictBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</code>
<div class="block">Evict block from cache.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#evictBlocksByHfileName-java.lang.String-">evictBlocksByHfileName</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>&nbsp;hfileName)</code>
<div class="block">Evicts all blocks for the given HFile.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">getBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
boolean&nbsp;caching,
boolean&nbsp;repeat,
boolean&nbsp;updateCacheMetrics)</code>
<div class="block">Fetch block from cache.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-org.apache.hadoop.hbase.io.hfile.BlockType-">getBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
boolean&nbsp;caching,
boolean&nbsp;repeat,
boolean&nbsp;updateCacheMetrics,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a>&nbsp;blockType)</code>
<div class="block">Fetch block from cache.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getBlockCaches--">getBlockCaches</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getBlockCount--">getBlockCount</a></span>()</code>
<div class="block">Returns the number of blocks currently cached in the block cache.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getCurrentDataSize--">getCurrentDataSize</a></span>()</code>
<div class="block">Returns the occupied size of data blocks, in bytes.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getCurrentSize--">getCurrentSize</a></span>()</code>
<div class="block">Returns the occupied size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getDataBlockCount--">getDataBlockCount</a></span>()</code>
<div class="block">Returns the number of data blocks currently cached in the block cache.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getFirstLevelCache--">getFirstLevelCache</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getFreeSize--">getFreeSize</a></span>()</code>
<div class="block">Returns the free size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getMaxSize--">getMaxSize</a></span>()</code>
<div class="block">Returns the Max size of the block cache, in bytes.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getRpcRefCount-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">getRpcRefCount</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</code>&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheStats</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#getStats--">getStats</a></span>()</code>
<div class="block">Get the statistics for this block cache.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#heapSize--">heapSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#isMetaBlock-org.apache.hadoop.hbase.io.hfile.BlockType-">isMetaBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a>&nbsp;blockType)</code>&nbsp;</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#iterator--">iterator</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#setMaxSize-long-">setMaxSize</a></span>(long&nbsp;size)</code>
<div class="block">Sets the max heap size that can be used by the BlockCache.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#shutdown--">shutdown</a></span>()</code>
<div class="block">Shutdown the cache.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#size--">size</a></span>()</code>
<div class="block">Returns the total size of the block cache, in bytes.</div>
</td>
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<h3>Methods inherited from class&nbsp;java.lang.<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></h3>
<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>Methods inherited from interface&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="class or interface in java.lang">spliterator</a></code></li>
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<h3>Field Detail</h3>
<a name="l1Cache">
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<h4>l1Cache</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.39">l1Cache</a></pre>
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<h4>l2Cache</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.40">l2Cache</a></pre>
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<a name="combinedCacheStats">
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<h4>combinedCacheStats</h4>
<pre>protected final&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.CombinedCacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CombinedBlockCache.CombinedCacheStats</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.41">combinedCacheStats</a></pre>
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<h3>Constructor Detail</h3>
<a name="CombinedBlockCache-org.apache.hadoop.hbase.io.hfile.FirstLevelBlockCache-org.apache.hadoop.hbase.io.hfile.BlockCache-">
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<h4>CombinedBlockCache</h4>
<pre>public&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.43">CombinedBlockCache</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a>&nbsp;l1Cache,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>&nbsp;l2Cache)</pre>
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<h3>Method Detail</h3>
<a name="heapSize--">
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<h4>heapSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.51">heapSize</a>()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html#heapSize--">heapSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/HeapSize.html" title="interface in org.apache.hadoop.hbase.io">HeapSize</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Approximate 'exclusive deep size' of implementing object. Includes
count of payload and hosting object sizings.</dd>
</dl>
</li>
</ul>
<a name="cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">
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<h4>cacheBlock</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.60">cacheBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;buf,
boolean&nbsp;inMemory)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">BlockCache</a></code></span></div>
<div class="block">Add block to cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-boolean-">cacheBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - The block's cache key.</dd>
<dd><code>buf</code> - The block contents wrapped in a ByteBuffer.</dd>
<dd><code>inMemory</code> - Whether block should be treated as in-memory</dd>
</dl>
</li>
</ul>
<a name="cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">
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<h4>cacheBlock</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.70">cacheBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;buf)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">BlockCache</a></code></span></div>
<div class="block">Add block to cache (defaults to not in-memory).</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#cacheBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-org.apache.hadoop.hbase.io.hfile.Cacheable-">cacheBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - The block's cache key.</dd>
<dd><code>buf</code> - The object to cache.</dd>
</dl>
</li>
</ul>
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<h4>isMetaBlock</h4>
<pre>private&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.74">isMetaBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a>&nbsp;blockType)</pre>
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<a name="getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">
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<h4>getBlock</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.79">getBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
boolean&nbsp;caching,
boolean&nbsp;repeat,
boolean&nbsp;updateCacheMetrics)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">BlockCache</a></code></span></div>
<div class="block">Fetch block from cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-">getBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - Block to fetch.</dd>
<dd><code>caching</code> - Whether this request has caching enabled (used for stats)</dd>
<dd><code>repeat</code> - Whether this is a repeat lookup for the same block
(used to avoid double counting cache misses when doing double-check locking)</dd>
<dd><code>updateCacheMetrics</code> - Whether to update cache metrics or not</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Block or null if block is not in 2 cache.</dd>
</dl>
</li>
</ul>
<a name="getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-org.apache.hadoop.hbase.io.hfile.BlockType-">
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<h4>getBlock</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/Cacheable.html" title="interface in org.apache.hadoop.hbase.io.hfile">Cacheable</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.96">getBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey,
boolean&nbsp;caching,
boolean&nbsp;repeat,
boolean&nbsp;updateCacheMetrics,
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a>&nbsp;blockType)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-org.apache.hadoop.hbase.io.hfile.BlockType-">BlockCache</a></code></span></div>
<div class="block">Fetch block from cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-boolean-boolean-boolean-org.apache.hadoop.hbase.io.hfile.BlockType-">getBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - Block to fetch.</dd>
<dd><code>caching</code> - Whether this request has caching enabled (used for stats)</dd>
<dd><code>repeat</code> - Whether this is a repeat lookup for the same block
(used to avoid double counting cache misses when doing double-check locking)</dd>
<dd><code>updateCacheMetrics</code> - Whether to update cache metrics or not</dd>
<dd><code>blockType</code> - BlockType</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Block or null if block is not in 2 cache.</dd>
</dl>
</li>
</ul>
<a name="evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">
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<h4>evictBlock</h4>
<pre>public&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.110">evictBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">BlockCache</a></code></span></div>
<div class="block">Evict block from cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlock-org.apache.hadoop.hbase.io.hfile.BlockCacheKey-">evictBlock</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cacheKey</code> - Block to evict</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if block existed and was evicted, false if not</dd>
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<a name="evictBlocksByHfileName-java.lang.String-">
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<h4>evictBlocksByHfileName</h4>
<pre>public&nbsp;int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.115">evictBlocksByHfileName</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>&nbsp;hfileName)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlocksByHfileName-java.lang.String-">BlockCache</a></code></span></div>
<div class="block">Evicts all blocks for the given HFile.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#evictBlocksByHfileName-java.lang.String-">evictBlocksByHfileName</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of blocks evicted</dd>
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</li>
</ul>
<a name="getStats--">
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<ul class="blockList">
<li class="blockList">
<h4>getStats</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheStats</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.121">getStats</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getStats--">BlockCache</a></code></span></div>
<div class="block">Get the statistics for this block cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getStats--">getStats</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Stats</dd>
</dl>
</li>
</ul>
<a name="shutdown--">
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<ul class="blockList">
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<h4>shutdown</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.126">shutdown</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#shutdown--">BlockCache</a></code></span></div>
<div class="block">Shutdown the cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#shutdown--">shutdown</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
</dl>
</li>
</ul>
<a name="size--">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>size</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.132">size</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#size--">BlockCache</a></code></span></div>
<div class="block">Returns the total size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#size--">size</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>size of cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getMaxSize--">
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<ul class="blockList">
<li class="blockList">
<h4>getMaxSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.137">getMaxSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getMaxSize--">BlockCache</a></code></span></div>
<div class="block">Returns the Max size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getMaxSize--">getMaxSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>size of cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getCurrentDataSize--">
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<li class="blockList">
<h4>getCurrentDataSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.142">getCurrentDataSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentDataSize--">BlockCache</a></code></span></div>
<div class="block">Returns the occupied size of data blocks, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentDataSize--">getCurrentDataSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>occupied space in cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getFreeSize--">
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<li class="blockList">
<h4>getFreeSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.147">getFreeSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getFreeSize--">BlockCache</a></code></span></div>
<div class="block">Returns the free size of the block cache, in bytes.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getFreeSize--">getFreeSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>free space in cache, in bytes</dd>
</dl>
</li>
</ul>
<a name="getCurrentSize--">
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<ul class="blockList">
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<h4>getCurrentSize</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.152">getCurrentSize</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentSize--">BlockCache</a></code></span></div>
<div class="block">Returns the occupied size of the block cache, in bytes.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getCurrentSize--">getCurrentSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>occupied space in cache, in bytes</dd>
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<h4>getBlockCount</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.157">getBlockCount</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlockCount--">BlockCache</a></code></span></div>
<div class="block">Returns the number of blocks currently cached in the block cache.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlockCount--">getBlockCount</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of blocks in the cache</dd>
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<h4>getDataBlockCount</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.162">getDataBlockCount</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getDataBlockCount--">BlockCache</a></code></span></div>
<div class="block">Returns the number of data blocks currently cached in the block cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getDataBlockCount--">getDataBlockCount</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of blocks in the cache</dd>
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<h4>iterator</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.388">iterator</a>()</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="class or interface in java.lang">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#iterator--">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Iterator over the blocks in the cache.</dd>
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<a name="getBlockCaches--">
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<h4>getBlockCaches</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a>[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.393">getBlockCaches</a>()</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html#getBlockCaches--">getBlockCaches</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">BlockCache</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The list of sub blockcaches that make up this one; returns null if no sub caches.</dd>
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<h4>setMaxSize</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.398">setMaxSize</a>(long&nbsp;size)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html#setMaxSize-long-">ResizableBlockCache</a></code></span></div>
<div class="block">Sets the max heap size that can be used by the BlockCache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html#setMaxSize-long-">setMaxSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/ResizableBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">ResizableBlockCache</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>size</code> - The max heap size.</dd>
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<pre>public&nbsp;int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.402">getRpcRefCount</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCacheKey.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>&nbsp;cacheKey)</pre>
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<h4>getFirstLevelCache</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/FirstLevelBlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html#line.408">getFirstLevelCache</a>()</pre>
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