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| <div class="subTitle">org.apache.hadoop.hbase.io.hfile</div> |
| <h2 title="Class HFileBlockIndex" class="title">Class HFileBlockIndex</h2> |
| </div> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <li>org.apache.hadoop.hbase.io.hfile.HFileBlockIndex</li> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.69">HFileBlockIndex</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></pre> |
| <div class="block">Provides functionality to write (<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.BlockIndexWriter.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFileBlockIndex.BlockIndexWriter</code></a>) and read |
| BlockIndexReader |
| single-level and multi-level block indexes. |
| |
| Examples of how to use the block index writer can be found in |
| <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CompoundBloomFilterWriter.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>CompoundBloomFilterWriter</code></a> and |
| <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileWriterImpl.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFileWriterImpl</code></a>. Examples of how to use the reader can be |
| found in <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFileReaderImpl</code></a> and |
| org.apache.hadoop.hbase.io.hfile.TestHFileBlockIndex.</div> |
| </li> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.BlockIndexChunk.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.BlockIndexChunk</a></span></code> |
| <div class="block">A single chunk of the block index in the process of writing.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.BlockIndexReader.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.BlockIndexReader</a></span></code> |
| <div class="block">The reader will always hold the root level index in the memory.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.BlockIndexWriter.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.BlockIndexWriter</a></span></code> |
| <div class="block">Writes the block index into the output stream.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.ByteArrayKeyBlockIndexReader.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.ByteArrayKeyBlockIndexReader</a></span></code> |
| <div class="block">An implementation of the BlockIndexReader that deals with block keys which are plain |
| byte[] like MetaBlock or the Bloom Block for ROW bloom.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.CellBasedKeyBlockIndexReader.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlockIndex.CellBasedKeyBlockIndexReader</a></span></code> |
| <div class="block">An implementation of the BlockIndexReader that deals with block keys which are the key |
| part of a cell like the Data block index or the ROW_COL bloom blocks |
| This needs a comparator to work with the Cells</div> |
| </td> |
| </tr> |
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| <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>(package private) static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#DEFAULT_MAX_CHUNK_SIZE">DEFAULT_MAX_CHUNK_SIZE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#DEFAULT_MIN_INDEX_NUM_ENTRIES">DEFAULT_MIN_INDEX_NUM_ENTRIES</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static <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/io/hfile/HFileBlockIndex.html#INLINE_BLOCKS_NOT_ALLOWED">INLINE_BLOCKS_NOT_ALLOWED</a></span></code> |
| <div class="block">Error message when trying to use inline block API in single-level mode.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/io/hfile/HFileBlockIndex.html#MAX_CHUNK_SIZE_KEY">MAX_CHUNK_SIZE_KEY</a></span></code> |
| <div class="block">The maximum size guideline for index blocks (both leaf, intermediate, and |
| root).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#MID_KEY_METADATA_SIZE">MID_KEY_METADATA_SIZE</a></span></code> |
| <div class="block">The size of a meta-data record used for finding the mid-key in a |
| multi-level index.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/io/hfile/HFileBlockIndex.html#MIN_INDEX_NUM_ENTRIES_KEY">MIN_INDEX_NUM_ENTRIES_KEY</a></span></code> |
| <div class="block">Minimum number of entries in a single index block.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#SECONDARY_INDEX_ENTRY_OVERHEAD">SECONDARY_INDEX_ENTRY_OVERHEAD</a></span></code> |
| <div class="block">The number of bytes stored in each "secondary index" entry in addition to |
| key bytes in the non-root index block format.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#HFileBlockIndex--">HFileBlockIndex</a></span>()</code> </td> |
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| <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>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#getMaxChunkSize-org.apache.hadoop.conf.Configuration-">getMaxChunkSize</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#getMinIndexNumEntries-org.apache.hadoop.conf.Configuration-">getMinIndexNumEntries</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
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| <h3>Methods inherited from class 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>Field Detail</h3> |
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| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.71">LOG</a></pre> |
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| <a name="DEFAULT_MAX_CHUNK_SIZE"> |
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| <li class="blockList"> |
| <h4>DEFAULT_MAX_CHUNK_SIZE</h4> |
| <pre>static final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.73">DEFAULT_MAX_CHUNK_SIZE</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
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| <h4>MAX_CHUNK_SIZE_KEY</h4> |
| <pre>public static final <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> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.79">MAX_CHUNK_SIZE_KEY</a></pre> |
| <div class="block">The maximum size guideline for index blocks (both leaf, intermediate, and |
| root). If not specified, <code>DEFAULT_MAX_CHUNK_SIZE</code> is used.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.HFileBlockIndex.MAX_CHUNK_SIZE_KEY">Constant Field Values</a></dd> |
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| <h4>MIN_INDEX_NUM_ENTRIES_KEY</h4> |
| <pre>public static final <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> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.87">MIN_INDEX_NUM_ENTRIES_KEY</a></pre> |
| <div class="block">Minimum number of entries in a single index block. Even if we are above the |
| hfile.index.block.max.size we will keep writing to the same block unless we have that many |
| entries. We should have at least a few entries so that we don't have too many levels in the |
| multi-level index. This should be at least 2 to make sure there is no infinite recursion.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.HFileBlockIndex.MIN_INDEX_NUM_ENTRIES_KEY">Constant Field Values</a></dd> |
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| <h4>DEFAULT_MIN_INDEX_NUM_ENTRIES</h4> |
| <pre>static final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.89">DEFAULT_MIN_INDEX_NUM_ENTRIES</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.HFileBlockIndex.DEFAULT_MIN_INDEX_NUM_ENTRIES">Constant Field Values</a></dd> |
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| <h4>SECONDARY_INDEX_ENTRY_OVERHEAD</h4> |
| <pre>static final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.html#line.97">SECONDARY_INDEX_ENTRY_OVERHEAD</a></pre> |
| <div class="block">The number of bytes stored in each "secondary index" entry in addition to |
| key bytes in the non-root index block format. The first long is the file |
| offset of the deeper-level block the entry points to, and the int that |
| follows is that block's on-disk size without including header.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.io.hfile.HFileBlockIndex.SECONDARY_INDEX_ENTRY_OVERHEAD">Constant Field Values</a></dd> |
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