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<h1 title="Uses of Package org.apache.hadoop.hbase.io.hfile" class="title">Uses of Package<br>org.apache.hadoop.hbase.io.hfile</h1>
</div>
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing packages, and an explanation">
<caption><span>Packages that use <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Package</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase">org.apache.hadoop.hbase</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.coprocessor">org.apache.hadoop.hbase.coprocessor</a></td>
<td class="colLast">
<div class="block">Table of Contents</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.io">org.apache.hadoop.hbase.io</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.io.encoding">org.apache.hadoop.hbase.io.encoding</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.io.hfile">org.apache.hadoop.hbase.io.hfile</a></td>
<td class="colLast">
<div class="block">Provides implementations of <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a> and HFile
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile"><code>BlockCache</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.io.hfile.bucket">org.apache.hadoop.hbase.io.hfile.bucket</a></td>
<td class="colLast">
<div class="block">Provides <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>, an implementation of
<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile"><code>BlockCache</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.mapreduce">org.apache.hadoop.hbase.mapreduce</a></td>
<td class="colLast">
<div class="block">Provides HBase <a href="https://cwiki.apache.org/confluence/display/HADOOP2/HadoopMapReduce">MapReduce</a>
Input/OutputFormats, a table indexing MapReduce job, and utility methods.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.mob">org.apache.hadoop.hbase.mob</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.regionserver">org.apache.hadoop.hbase.regionserver</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.util">org.apache.hadoop.hbase.util</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.hbase.util.hbck">org.apache.hadoop.hbase.util.hbck</a></td>
<td class="colLast">&nbsp;</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList"><a name="org.apache.hadoop.hbase">
<!-- -->
</a>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a> used by <a href="../../../../../../org/apache/hadoop/hbase/package-summary.html">org.apache.hadoop.hbase</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockCache.html#org.apache.hadoop.hbase">BlockCache</a>
<div class="block">Block cache interface.</div>
</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList"><a name="org.apache.hadoop.hbase.coprocessor">
<!-- -->
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a> used by <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/package-summary.html">org.apache.hadoop.hbase.coprocessor</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CacheConfig.html#org.apache.hadoop.hbase.coprocessor">CacheConfig</a>
<div class="block">Stores all of the cache objects and configuration for a single HFile.</div>
</td>
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</tbody>
</table>
</li>
<li class="blockList"><a name="org.apache.hadoop.hbase.io">
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a> used by <a href="../../../../../../org/apache/hadoop/hbase/io/package-summary.html">org.apache.hadoop.hbase.io</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CacheConfig.html#org.apache.hadoop.hbase.io">CacheConfig</a>
<div class="block">Stores all of the cache objects and configuration for a single HFile.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileInfo.html#org.apache.hadoop.hbase.io">HFileInfo</a>
<div class="block">Metadata Map of attributes for HFile written out as HFile Trailer.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileScanner.html#org.apache.hadoop.hbase.io">HFileScanner</a>
<div class="block">A scanner allows you to position yourself within a HFile and
scan through it.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/ReaderContext.html#org.apache.hadoop.hbase.io">ReaderContext</a>
<div class="block">Carries the information on some of the meta data about the HFile Reader</div>
</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList"><a name="org.apache.hadoop.hbase.io.encoding">
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a> used by <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/package-summary.html">org.apache.hadoop.hbase.io.encoding</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockType.html#org.apache.hadoop.hbase.io.encoding">BlockType</a>
<div class="block">Various types of HFile blocks.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileContext.html#org.apache.hadoop.hbase.io.encoding">HFileContext</a>
<div class="block">Read-only HFile Context Information.</div>
</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList"><a name="org.apache.hadoop.hbase.io.hfile">
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a> used by <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/package-summary.html">org.apache.hadoop.hbase.io.hfile</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/AgeSnapshot.html#org.apache.hadoop.hbase.io.hfile">AgeSnapshot</a>
<div class="block">Snapshot of block cache age in cache.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockCache.html#org.apache.hadoop.hbase.io.hfile">BlockCache</a>
<div class="block">Block cache interface.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockCacheFactory.ExternalBlockCaches.html#org.apache.hadoop.hbase.io.hfile">BlockCacheFactory.ExternalBlockCaches</a>
<div class="block">Enum of all built in external block caches.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockCacheKey.html#org.apache.hadoop.hbase.io.hfile">BlockCacheKey</a>
<div class="block">Cache Key for use with implementations of <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockCache.html" title="interface in org.apache.hadoop.hbase.io.hfile"><code>BlockCache</code></a></div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockCacheUtil.CachedBlocksByFile.html#org.apache.hadoop.hbase.io.hfile">BlockCacheUtil.CachedBlocksByFile</a>
<div class="block">Use one of these to keep a running account of cached blocks by file.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockPriority.html#org.apache.hadoop.hbase.io.hfile">BlockPriority</a>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockType.html#org.apache.hadoop.hbase.io.hfile">BlockType</a>
<div class="block">Various types of HFile blocks.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockType.BlockCategory.html#org.apache.hadoop.hbase.io.hfile">BlockType.BlockCategory</a>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/BlockWithScanInfo.html#org.apache.hadoop.hbase.io.hfile">BlockWithScanInfo</a>
<div class="block">BlockWithScanInfo is wrapper class for HFileBlock with other attributes.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/Cacheable.html#org.apache.hadoop.hbase.io.hfile">Cacheable</a>
<div class="block">Cacheable is an interface that allows for an object to be cached.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CacheableDeserializer.html#org.apache.hadoop.hbase.io.hfile">CacheableDeserializer</a>
<div class="block">Interface for a deserializer.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CacheConfig.html#org.apache.hadoop.hbase.io.hfile">CacheConfig</a>
<div class="block">Stores all of the cache objects and configuration for a single HFile.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CachedBlock.html#org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CacheStats.html#org.apache.hadoop.hbase.io.hfile">CacheStats</a>
<div class="block">Class that implements cache metrics.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CombinedBlockCache.html#org.apache.hadoop.hbase.io.hfile">CombinedBlockCache</a>
<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>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CombinedBlockCache.CombinedCacheStats.html#org.apache.hadoop.hbase.io.hfile">CombinedBlockCache.CombinedCacheStats</a>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CompoundBloomFilterBase.html#org.apache.hadoop.hbase.io.hfile">CompoundBloomFilterBase</a>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CompoundBloomFilterWriter.ReadyChunk.html#org.apache.hadoop.hbase.io.hfile">CompoundBloomFilterWriter.ReadyChunk</a>
<div class="block">A Bloom filter chunk enqueued for writing</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CorruptHFileException.html#org.apache.hadoop.hbase.io.hfile">CorruptHFileException</a>
<div class="block">This exception is thrown when attempts to read an HFile fail due to corruption or truncation
issues.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/ExclusiveMemHFileBlock.html#org.apache.hadoop.hbase.io.hfile">ExclusiveMemHFileBlock</a>
<div class="block">The <a href="../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io"><code>ByteBuffAllocator</code></a> won't allocate pooled heap <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio"><code>ByteBuff</code></a> now; at the same time,
if allocate an off-heap <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio"><code>ByteBuff</code></a> from allocator, then it must be a pooled one.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/FirstLevelBlockCache.html#org.apache.hadoop.hbase.io.hfile">FirstLevelBlockCache</a>
<div class="block">In-memory BlockCache that may be backed by secondary layer(s).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/FixedFileTrailer.html#org.apache.hadoop.hbase.io.hfile">FixedFileTrailer</a>
<div class="block">The <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a> has a fixed trailer which contains offsets to other
variable parts of the file.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFile.CachingBlockReader.html#org.apache.hadoop.hbase.io.hfile">HFile.CachingBlockReader</a>
<div class="block">An abstraction used by the block index.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFile.Reader.html#org.apache.hadoop.hbase.io.hfile">HFile.Reader</a>
<div class="block">An interface used by clients to open and iterate an <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFile.Writer.html#org.apache.hadoop.hbase.io.hfile">HFile.Writer</a>
<div class="block">API required to write an <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a></div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFile.WriterFactory.html#org.apache.hadoop.hbase.io.hfile">HFile.WriterFactory</a>
<div class="block">This variety of ways to construct writers is used throughout the code, and
we want to be able to swap writer implementations.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.html#org.apache.hadoop.hbase.io.hfile">HFileBlock</a>
<div class="block">Cacheable Blocks of an <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a> version 2 file.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.BlockIterator.html#org.apache.hadoop.hbase.io.hfile">HFileBlock.BlockIterator</a>
<div class="block">Iterator for reading <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFileBlock</code></a>s in load-on-open-section, such as root data index
block, meta index block, file info block etc.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.BlockWritable.html#org.apache.hadoop.hbase.io.hfile">HFileBlock.BlockWritable</a>
<div class="block">Something that can be written into a block.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.FSReader.html#org.apache.hadoop.hbase.io.hfile">HFileBlock.FSReader</a>
<div class="block">An HFile block reader with iteration ability.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.PrefetchedHeader.html#org.apache.hadoop.hbase.io.hfile">HFileBlock.PrefetchedHeader</a>
<div class="block">Data-structure to use caching the header of the NEXT block.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.Writer.html#org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer</a>
<div class="block">Unified version 2 <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a> block writer.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlock.Writer.State.html#org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer.State</a>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlockBuilder.html#org.apache.hadoop.hbase.io.hfile">HFileBlockBuilder</a>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlockIndex.BlockIndexChunk.html#org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.BlockIndexChunk</a>
<div class="block">A single chunk of the block index in the process of writing.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileBlockIndex.BlockIndexReader.html#org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.BlockIndexReader</a>
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<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/HFileContext.html#org.apache.hadoop.hbase.io.hfile">HFileContext</a>
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<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/ResizableBlockCache.html#org.apache.hadoop.hbase.io.hfile">ResizableBlockCache</a>
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<td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/class-use/CacheConfig.html#org.apache.hadoop.hbase.util">CacheConfig</a>
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