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| <div class="subTitle">org.apache.hadoop.hbase.io.hfile</div> |
| <h2 title="Class HFileBlock.Writer" class="title">Class HFileBlock.Writer</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.hadoop.hbase.io.hfile.HFileBlock.Writer</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/regionserver/ShipperListener.html" title="interface in org.apache.hadoop.hbase.regionserver">ShipperListener</a></dd> |
| </dl> |
| <dl> |
| <dt>Enclosing class:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlock</a></dd> |
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| <br> |
| <pre>static class <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.html#line.752">HFileBlock.Writer</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ShipperListener.html" title="interface in org.apache.hadoop.hbase.regionserver">ShipperListener</a></pre> |
| <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. The intended usage pattern |
| is as follows: |
| <ol> |
| <li>Construct an <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFileBlock.Writer</code></a>, providing a compression algorithm. |
| <li>Call <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#startWriting-org.apache.hadoop.hbase.io.hfile.BlockType-"><code>startWriting(org.apache.hadoop.hbase.io.hfile.BlockType)</code></a> and get a data stream to write to. |
| <li>Write your data into the stream. |
| <li>Call Writer#writeHeaderAndData(FSDataOutputStream) as many times as you need to. |
| store the serialized block into an external stream. |
| <li>Repeat to write more blocks. |
| </ol> |
| <p></div> |
| </li> |
| </ul> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.State.html" title="enum in org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer.State</a></span></code> </td> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#allocator">allocator</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/ByteArrayOutputStream.html" title="class in org.apache.hadoop.hbase.io">ByteArrayOutputStream</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#baosInMemory">baosInMemory</a></span></code> |
| <div class="block">The stream we use to accumulate data into a block in an uncompressed format.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#blockType">blockType</a></span></code> |
| <div class="block">Current block type.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.html" title="interface in org.apache.hadoop.hbase.io.hfile">HFileDataBlockEncoder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#dataBlockEncoder">dataBlockEncoder</a></span></code> |
| <div class="block">Data block encoder used for data blocks</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/HFileBlockEncodingContext.html" title="interface in org.apache.hadoop.hbase.io.encoding">HFileBlockEncodingContext</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#dataBlockEncodingCtx">dataBlockEncodingCtx</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultEncodingContext.html" title="class in org.apache.hadoop.hbase.io.encoding">HFileBlockDefaultEncodingContext</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#defaultBlockEncodingCtx">defaultBlockEncodingCtx</a></span></code> |
| <div class="block">block encoding context for non-data blocks</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileContext.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileContext</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#fileContext">fileContext</a></span></code> |
| <div class="block">Meta data that holds information about the hfileblock</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/ByteArrayOutputStream.html" title="class in org.apache.hadoop.hbase.io">ByteArrayOutputStream</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#onDiskBlockBytesWithHeader">onDiskBlockBytesWithHeader</a></span></code> |
| <div class="block">Bytes to be written to the file system, including the header.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#onDiskChecksum">onDiskChecksum</a></span></code> |
| <div class="block">The size of the checksum data on disk.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#prevOffset">prevOffset</a></span></code> |
| <div class="block">The offset of the previous block of the same type</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private long[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#prevOffsetByType">prevOffsetByType</a></span></code> |
| <div class="block">Offset of previous block by block type.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#startOffset">startOffset</a></span></code> |
| <div class="block">Current block's start offset in the <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="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.State.html" title="enum in org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer.State</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#state">state</a></span></code> |
| <div class="block">Writer state.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#userDataStream">userDataStream</a></span></code> |
| <div class="block">A stream that we write uncompressed bytes to, which compresses them and |
| writes them to <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#baosInMemory"><code>baosInMemory</code></a>.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#Writer-org.apache.hadoop.hbase.io.hfile.HFileDataBlockEncoder-org.apache.hadoop.hbase.io.hfile.HFileContext-">Writer</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.html" title="interface in org.apache.hadoop.hbase.io.hfile">HFileDataBlockEncoder</a> dataBlockEncoder, |
| <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileContext.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileContext</a> fileContext)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#Writer-org.apache.hadoop.hbase.io.hfile.HFileDataBlockEncoder-org.apache.hadoop.hbase.io.hfile.HFileContext-org.apache.hadoop.hbase.io.ByteBuffAllocator-">Writer</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.html" title="interface in org.apache.hadoop.hbase.io.hfile">HFileDataBlockEncoder</a> dataBlockEncoder, |
| <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileContext.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileContext</a> fileContext, |
| <a href="../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a> allocator)</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </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/HFileBlock.Writer.html#beforeShipped--">beforeShipped</a></span>()</code> |
| <div class="block">The action that needs to be performed before <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Shipper.html#shipped--"><code>Shipper.shipped()</code></a> is performed</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#blockSizeWritten--">blockSizeWritten</a></span>()</code> |
| <div class="block">Returns the number of bytes written into the current block so far, or |
| zero if not writing the block at the moment.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#cloneOnDiskBufferWithHeader--">cloneOnDiskBufferWithHeader</a></span>()</code> |
| <div class="block">Clones the header followed by the on-disk (compressed/encoded/encrypted) data.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#cloneUncompressedBufferWithHeader--">cloneUncompressedBufferWithHeader</a></span>()</code> |
| <div class="block">Clones the header followed by the uncompressed data, even if using |
| compression.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#encodedBlockSizeWritten--">encodedBlockSizeWritten</a></span>()</code> |
| <div class="block">Returns the number of bytes written into the current block so far, or |
| zero if not writing the block at the moment.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#ensureBlockReady--">ensureBlockReady</a></span>()</code> |
| <div class="block">Transitions the block writer from the "writing" state to the "block |
| ready" state.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#expectState-org.apache.hadoop.hbase.io.hfile.HFileBlock.Writer.State-">expectState</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.State.html" title="enum in org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer.State</a> expectedState)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#finishBlock--">finishBlock</a></span>()</code> |
| <div class="block">Finish up writing of the block.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#finishBlockAndWriteHeaderAndData-java.io.DataOutputStream-">finishBlockAndWriteHeaderAndData</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a> out)</code> |
| <div class="block">Writes the header and the compressed data of this block (or uncompressed |
| data when not using compression) into the given stream.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlock</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getBlockForCaching-org.apache.hadoop.hbase.io.hfile.CacheConfig-">getBlockForCaching</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheConfig.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheConfig</a> cacheConf)</code> |
| <div class="block">Creates a new HFileBlock.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/EncodingState.html" title="class in org.apache.hadoop.hbase.io.encoding">EncodingState</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getEncodingState--">getEncodingState</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>(package private) byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getHeaderAndDataForTest--">getHeaderAndDataForTest</a></span>()</code> |
| <div class="block">Returns the header or the compressed data (or uncompressed data when not |
| using compression) as a byte array.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getOnDiskSizeWithHeader--">getOnDiskSizeWithHeader</a></span>()</code> |
| <div class="block">Returns the on-disk size of the block.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getOnDiskSizeWithoutHeader--">getOnDiskSizeWithoutHeader</a></span>()</code> |
| <div class="block">Returns the on-disk size of the data portion of the block.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getUncompressedSizeWithHeader--">getUncompressedSizeWithHeader</a></span>()</code> |
| <div class="block">The uncompressed size of the block data, including header size.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#getUncompressedSizeWithoutHeader--">getUncompressedSizeWithoutHeader</a></span>()</code> |
| <div class="block">The uncompressed size of the block data.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#isWriting--">isWriting</a></span>()</code> </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#putHeader-byte:A-int-int-int-int-">putHeader</a></span>(byte[] dest, |
| int offset, |
| int onDiskSize, |
| int uncompressedSize, |
| int onDiskDataSize)</code> |
| <div class="block">Put the header into the given byte array at the given offset.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#putHeader-org.apache.hadoop.hbase.io.ByteArrayOutputStream-int-int-int-">putHeader</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/ByteArrayOutputStream.html" title="class in org.apache.hadoop.hbase.io">ByteArrayOutputStream</a> dest, |
| int onDiskSize, |
| int uncompressedSize, |
| int onDiskDataSize)</code> </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#putHeader-org.apache.hadoop.hbase.nio.ByteBuff-int-int-int-">putHeader</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> buff, |
| int onDiskSize, |
| int uncompressedSize, |
| int onDiskDataSize)</code> </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#release--">release</a></span>()</code> |
| <div class="block">Releases resources used by this writer.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#startWriting-org.apache.hadoop.hbase.io.hfile.BlockType-">startWriting</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a> newBlockType)</code> |
| <div class="block">Starts writing into the block.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#write-org.apache.hadoop.hbase.Cell-">write</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell)</code> |
| <div class="block">Writes the Cell to this block</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#writeBlock-org.apache.hadoop.hbase.io.hfile.HFileBlock.BlockWritable-org.apache.hadoop.fs.FSDataOutputStream-">writeBlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html" title="interface in org.apache.hadoop.hbase.io.hfile">HFileBlock.BlockWritable</a> bw, |
| org.apache.hadoop.fs.FSDataOutputStream out)</code> |
| <div class="block">Takes the given <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html" title="interface in org.apache.hadoop.hbase.io.hfile"><code>HFileBlock.BlockWritable</code></a> instance, creates a new block of |
| its appropriate type, writes the writable into this block, and flushes |
| the block into the output stream.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#writeHeaderAndData-org.apache.hadoop.fs.FSDataOutputStream-">writeHeaderAndData</a></span>(org.apache.hadoop.fs.FSDataOutputStream out)</code> |
| <div class="block">Similar to <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#writeHeaderAndData-org.apache.hadoop.fs.FSDataOutputStream-"><code>writeHeaderAndData(FSDataOutputStream)</code></a>, but records |
| the offset of this block so that it can be referenced in the next block |
| of the same type.</div> |
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| <h3>Field Detail</h3> |
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| </a> |
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| <h4>state</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.State.html" title="enum in org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer.State</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.760">state</a></pre> |
| <div class="block">Writer state. Used to ensure the correct usage protocol.</div> |
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| <div class="block">Data block encoder used for data blocks</div> |
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| <h4>defaultBlockEncodingCtx</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/io/encoding/HFileBlockDefaultEncodingContext.html" title="class in org.apache.hadoop.hbase.io.encoding">HFileBlockDefaultEncodingContext</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.768">defaultBlockEncodingCtx</a></pre> |
| <div class="block">block encoding context for non-data blocks</div> |
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| <div class="block">The stream we use to accumulate data into a block in an uncompressed format. |
| We reset this stream at the end of each block and reuse it. The |
| header is written as the first <a href="../../../../../../org/apache/hadoop/hbase/HConstants.html#HFILEBLOCK_HEADER_SIZE"><code>HConstants.HFILEBLOCK_HEADER_SIZE</code></a> bytes into this |
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| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.789">userDataStream</a></pre> |
| <div class="block">A stream that we write uncompressed bytes to, which compresses them and |
| writes them to <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#baosInMemory"><code>baosInMemory</code></a>.</div> |
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| <div class="block">Bytes to be written to the file system, including the header. Compressed |
| if compression is turned on. It also includes the checksum data that |
| immediately follows the block data. (header + data + checksums)</div> |
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| <div class="block">The size of the checksum data on disk. It is used only if data is |
| not compressed. If data is compressed, then the checksums are already |
| part of onDiskBytesWithHeader. If data is uncompressed, then this |
| variable stores the checksum data for this block.</div> |
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| <div class="block">Current block's start offset in the <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFile.html" title="class in org.apache.hadoop.hbase.io.hfile"><code>HFile</code></a>. Set in |
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| <div class="block">Offset of previous block by block type. Updated when the next block is |
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| <div class="block">The offset of the previous block of the same type</div> |
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| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.839">Writer</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.html" title="interface in org.apache.hadoop.hbase.io.hfile">HFileDataBlockEncoder</a> dataBlockEncoder, |
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| <a href="../../../../../../org/apache/hadoop/hbase/io/ByteBuffAllocator.html" title="class in org.apache.hadoop.hbase.io">ByteBuffAllocator</a> allocator)</pre> |
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| <h4>startWriting</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.874">startWriting</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/BlockType.html" title="enum in org.apache.hadoop.hbase.io.hfile">BlockType</a> newBlockType) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Starts writing into the block. The previous block's data is discarded.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the stream the user can write their data into</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="write-org.apache.hadoop.hbase.Cell-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>write</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.901">write</a>(<a href="../../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a> cell) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Writes the Cell to this block</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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| </ul> |
| <a name="ensureBlockReady--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>ensureBlockReady</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.910">ensureBlockReady</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Transitions the block writer from the "writing" state to the "block |
| ready" state. Does nothing if a block is already finished.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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| </a> |
| <ul class="blockList"> |
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| <h4>finishBlock</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.928">finishBlock</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Finish up writing of the block. |
| Flushes the compressing stream (if using compression), fills out the header, |
| does any compression/encryption of bytes to flush out to disk, and manages |
| the cache on write content, if applicable. Sets block write state to "block ready".</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
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| </a> |
| <ul class="blockList"> |
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| <h4>putHeader</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.982">putHeader</a>(byte[] dest, |
| int offset, |
| int onDiskSize, |
| int uncompressedSize, |
| int onDiskDataSize)</pre> |
| <div class="block">Put the header into the given byte array at the given offset.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>onDiskSize</code> - size of the block on disk header + data + checksum</dd> |
| <dd><code>uncompressedSize</code> - size of the block after decompression (but |
| before optional data block decoding) including header</dd> |
| <dd><code>onDiskDataSize</code> - size of the block on disk with header |
| and data but not including the checksums</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="putHeader-org.apache.hadoop.hbase.nio.ByteBuff-int-int-int-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>putHeader</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.993">putHeader</a>(<a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> buff, |
| int onDiskSize, |
| int uncompressedSize, |
| int onDiskDataSize)</pre> |
| </li> |
| </ul> |
| <a name="putHeader-org.apache.hadoop.hbase.io.ByteArrayOutputStream-int-int-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>putHeader</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1005">putHeader</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/ByteArrayOutputStream.html" title="class in org.apache.hadoop.hbase.io">ByteArrayOutputStream</a> dest, |
| int onDiskSize, |
| int uncompressedSize, |
| int onDiskDataSize)</pre> |
| </li> |
| </ul> |
| <a name="writeHeaderAndData-org.apache.hadoop.fs.FSDataOutputStream-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>writeHeaderAndData</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1015">writeHeaderAndData</a>(org.apache.hadoop.fs.FSDataOutputStream out) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Similar to <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#writeHeaderAndData-org.apache.hadoop.fs.FSDataOutputStream-"><code>writeHeaderAndData(FSDataOutputStream)</code></a>, but records |
| the offset of this block so that it can be referenced in the next block |
| of the same type.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="finishBlockAndWriteHeaderAndData-java.io.DataOutputStream-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>finishBlockAndWriteHeaderAndData</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1033">finishBlockAndWriteHeaderAndData</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a> out) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Writes the header and the compressed data of this block (or uncompressed |
| data when not using compression) into the given stream. Can be called in |
| the "writing" state or in the "block ready" state. If called in the |
| "writing" state, transitions the writer to the "block ready" state.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>out</code> - the output stream to write the</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getHeaderAndDataForTest--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getHeaderAndDataForTest</h4> |
| <pre>byte[] <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1051">getHeaderAndDataForTest</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Returns the header or the compressed data (or uncompressed data when not |
| using compression) as a byte array. Can be called in the "writing" state |
| or in the "block ready" state. If called in the "writing" state, |
| transitions the writer to the "block ready" state. This returns |
| the header + data + checksums stored on disk.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>header and data as they would be stored on disk in a byte array</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
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| <li class="blockList"> |
| <h4>release</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1068">release</a>()</pre> |
| <div class="block">Releases resources used by this writer.</div> |
| </li> |
| </ul> |
| <a name="getOnDiskSizeWithoutHeader--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getOnDiskSizeWithoutHeader</h4> |
| <pre>int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1087">getOnDiskSizeWithoutHeader</a>()</pre> |
| <div class="block">Returns the on-disk size of the data portion of the block. This is the |
| compressed size if compression is enabled. Can only be called in the |
| "block ready" state. Header is not compressed, and its size is not |
| included in the return value.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the on-disk size of the block, not including the header.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getOnDiskSizeWithHeader--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getOnDiskSizeWithHeader</h4> |
| <pre>int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1100">getOnDiskSizeWithHeader</a>()</pre> |
| <div class="block">Returns the on-disk size of the block. Can only be called in the |
| "block ready" state.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the on-disk size of the block ready to be written, including the |
| header size, the data and the checksum data.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getUncompressedSizeWithoutHeader--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getUncompressedSizeWithoutHeader</h4> |
| <pre>int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1108">getUncompressedSizeWithoutHeader</a>()</pre> |
| <div class="block">The uncompressed size of the block data. Does not include header size.</div> |
| </li> |
| </ul> |
| <a name="getUncompressedSizeWithHeader--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getUncompressedSizeWithHeader</h4> |
| <pre>int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1116">getUncompressedSizeWithHeader</a>()</pre> |
| <div class="block">The uncompressed size of the block data, including header size.</div> |
| </li> |
| </ul> |
| <a name="isWriting--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isWriting</h4> |
| <pre>boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1122">isWriting</a>()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if a block is being written</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="encodedBlockSizeWritten--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>encodedBlockSizeWritten</h4> |
| <pre>public int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1133">encodedBlockSizeWritten</a>()</pre> |
| <div class="block">Returns the number of bytes written into the current block so far, or |
| zero if not writing the block at the moment. Note that this will return |
| zero in the "block ready" state as well.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of bytes written</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="blockSizeWritten--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>blockSizeWritten</h4> |
| <pre>int <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1144">blockSizeWritten</a>()</pre> |
| <div class="block">Returns the number of bytes written into the current block so far, or |
| zero if not writing the block at the moment. Note that this will return |
| zero in the "block ready" state as well.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of bytes written</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="cloneUncompressedBufferWithHeader--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>cloneUncompressedBufferWithHeader</h4> |
| <pre><a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1156">cloneUncompressedBufferWithHeader</a>()</pre> |
| <div class="block">Clones the header followed by the uncompressed data, even if using |
| compression. This is needed for storing uncompressed blocks in the block |
| cache. Can be called in the "writing" state or the "block ready" state. |
| Returns only the header and data, does not include checksum data.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Returns an uncompressed block ByteBuff for caching on write</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="cloneOnDiskBufferWithHeader--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>cloneOnDiskBufferWithHeader</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1175">cloneOnDiskBufferWithHeader</a>()</pre> |
| <div class="block">Clones the header followed by the on-disk (compressed/encoded/encrypted) data. This is needed |
| for storing packed blocks in the block cache. Returns only the header and data, Does not |
| include checksum data.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Returns a copy of block bytes for caching on write</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="expectState-org.apache.hadoop.hbase.io.hfile.HFileBlock.Writer.State-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>expectState</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1183">expectState</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.State.html" title="enum in org.apache.hadoop.hbase.io.hfile">HFileBlock.Writer.State</a> expectedState)</pre> |
| </li> |
| </ul> |
| <a name="writeBlock-org.apache.hadoop.hbase.io.hfile.HFileBlock.BlockWritable-org.apache.hadoop.fs.FSDataOutputStream-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>writeBlock</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1199">writeBlock</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html" title="interface in org.apache.hadoop.hbase.io.hfile">HFileBlock.BlockWritable</a> bw, |
| org.apache.hadoop.fs.FSDataOutputStream out) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Takes the given <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.BlockWritable.html" title="interface in org.apache.hadoop.hbase.io.hfile"><code>HFileBlock.BlockWritable</code></a> instance, creates a new block of |
| its appropriate type, writes the writable into this block, and flushes |
| the block into the output stream. The writer is instructed not to buffer |
| uncompressed bytes for cache-on-write.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>bw</code> - the block-writable object to write as a block</dd> |
| <dd><code>out</code> - the file system output stream</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getBlockForCaching-org.apache.hadoop.hbase.io.hfile.CacheConfig-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getBlockForCaching</h4> |
| <pre><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileBlock.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileBlock</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/HFileBlock.Writer.html#line.1218">getBlockForCaching</a>(<a href="../../../../../../org/apache/hadoop/hbase/io/hfile/CacheConfig.html" title="class in org.apache.hadoop.hbase.io.hfile">CacheConfig</a> cacheConf)</pre> |
| <div class="block">Creates a new HFileBlock. Checksums have already been validated, so |
| the byte buffer passed into the constructor of this newly created |
| block does not have checksum data even though the header minor |
| version is MINOR_VERSION_WITH_CHECKSUM. This is indicated by setting a |
| 0 value in bytesPerChecksum. This method copies the on-disk or |
| uncompressed data to build the HFileBlock which is used only |
| while writing blocks and caching. |
| |
| <p>TODO: Should there be an option where a cache can ask that hbase preserve block |
| checksums for checking after a block comes out of the cache? Otehrwise, cache is responsible |
| for blocks being wholesome (ECC memory or if file-backed, it does checksumming).</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
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