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| <h1 title="Package" class="title">Package org.apache.hadoop.hbase.io.hfile.bucket</h1> |
| <div class="docSummary"> |
| <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> |
| </div> |
| <p>See: <a href="#package.description">Description</a></p> |
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| <caption><span>Interface Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Interface</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.BucketEntryHandler.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry.BucketEntryHandler</a><T></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/FileIOEngine.FileAccessor.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket">FileIOEngine.FileAccessor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/IOEngine.html" title="interface in org.apache.hadoop.hbase.io.hfile.bucket">IOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">A class implementing IOEngine interface supports data services for |
| <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> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation"> |
| <caption><span>Class Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketAllocator</a></td> |
| <td class="colLast"> |
| <div class="block">This class is used to allocate a block with specified size and free the block when evicting.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.Bucket.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketAllocator.Bucket</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.IndexStatistics.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketAllocator.IndexStatistics</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketCache</a></td> |
| <td class="colLast"> |
| <div class="block">BucketCache uses <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketAllocator</code></a> to allocate/free blocks, and uses |
| BucketCache#ramCache and BucketCache#backingMap in order to |
| determine if a given element is in the cache.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.RAMCache.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketCache.RAMCache</a></td> |
| <td class="colLast"> |
| <div class="block">Wrapped the delegate ConcurrentMap with maintaining its block's reference count.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.RAMQueueEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketCache.RAMQueueEntry</a></td> |
| <td class="colLast"> |
| <div class="block">Block Entry stored in the memory with key,data and so on</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.StatisticsThread.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketCache.StatisticsThread</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketCacheStats.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketCacheStats</a></td> |
| <td class="colLast"> |
| <div class="block">Class that implements cache metrics for bucket cache.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketEntry.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketEntry</a></td> |
| <td class="colLast"> |
| <div class="block">Item in cache.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketProtoUtils.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketProtoUtils</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/ByteBufferIOEngine.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">ByteBufferIOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">IO engine that stores data in memory using an array of ByteBuffers <a href="../../../../../../../org/apache/hadoop/hbase/util/ByteBufferArray.html" title="class in org.apache.hadoop.hbase.util"><code>ByteBufferArray</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/CachedEntryQueue.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">CachedEntryQueue</a></td> |
| <td class="colLast"> |
| <div class="block">A memory-bound queue that will grow until an element brings total size larger |
| than maxSize.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/ExclusiveMemoryMmapIOEngine.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">ExclusiveMemoryMmapIOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">IO engine that stores data to a file on the local block device using memory mapping mechanism</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/FileIOEngine.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">FileIOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">IO engine that stores data to a file on the local file system.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/FileIOEngine.FileReadAccessor.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">FileIOEngine.FileReadAccessor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/FileIOEngine.FileWriteAccessor.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">FileIOEngine.FileWriteAccessor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/FileMmapIOEngine.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">FileMmapIOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">IO engine that stores data to a file on the specified file system using memory mapping |
| mechanism</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/PersistentIOEngine.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">PersistentIOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">A class implementing PersistentIOEngine interface supports file integrity verification |
| for <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> which use persistent IOEngine</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/PersistentIOEngine.DuFileCommand.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">PersistentIOEngine.DuFileCommand</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/SharedMemoryMmapIOEngine.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">SharedMemoryMmapIOEngine</a></td> |
| <td class="colLast"> |
| <div class="block">IO engine that stores data in pmem devices such as DCPMM.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Exception Summary table, listing exceptions, and an explanation"> |
| <caption><span>Exception Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Exception</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocatorException.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">BucketAllocatorException</a></td> |
| <td class="colLast"> |
| <div class="block">Thrown by <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket"><code>BucketAllocator</code></a></div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/CacheFullException.html" title="class in org.apache.hadoop.hbase.io.hfile.bucket">CacheFullException</a></td> |
| <td class="colLast"> |
| <div class="block">Thrown by <a href="../../../../../../../org/apache/hadoop/hbase/io/hfile/bucket/BucketAllocator.html#allocateBlock-int-"><code>BucketAllocator.allocateBlock(int)</code></a> when cache is full for |
| the requested size</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| </a> |
| <h2 title="Package org.apache.hadoop.hbase.io.hfile.bucket Description">Package org.apache.hadoop.hbase.io.hfile.bucket Description</h2> |
| <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>. |
| See <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> for how it works.</div> |
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