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| <div class="subTitle">org.apache.hadoop.hbase.regionserver</div> |
| <h2 title="Class DataBlockEncodingTool" class="title">Class DataBlockEncodingTool</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.hadoop.hbase.regionserver.DataBlockEncodingTool</li> |
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| <pre>public class <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.65">DataBlockEncodingTool</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">Tests various algorithms for key compression on an existing HFile. Useful |
| for testing, debugging and benchmarking.</div> |
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| </tr> |
| <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/regionserver/DataBlockEncodingTool.Manipulation.html" title="enum in org.apache.hadoop.hbase.regionserver">DataBlockEncodingTool.Manipulation</a></span></code> </td> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#benchmarkNOmit">benchmarkNOmit</a></span></code> </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/regionserver/DataBlockEncodingTool.html#benchmarkNTimes">benchmarkNTimes</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#BYTES_IN_MB">BYTES_IN_MB</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><org.apache.hadoop.hbase.io.encoding.EncodedDataBlock></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#codecs">codecs</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.hbase.io.compress.Compression.Algorithm</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#compressionAlgorithm">compressionAlgorithm</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <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/regionserver/DataBlockEncodingTool.html#compressionAlgorithmName">compressionAlgorithmName</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.io.compress.Compressor</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#compressor">compressor</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.io.compress.Decompressor</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#decompressor">decompressor</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#DEFAULT_BENCHMARK_N_OMIT">DEFAULT_BENCHMARK_N_OMIT</a></span></code> |
| <div class="block">How many first runs should not be included in the benchmark.</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/regionserver/DataBlockEncodingTool.html#DEFAULT_BENCHMARK_N_TIMES">DEFAULT_BENCHMARK_N_TIMES</a></span></code> |
| <div class="block">How many times to run the benchmark.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static org.apache.hadoop.hbase.io.compress.Compression.Algorithm</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#DEFAULT_COMPRESSION">DEFAULT_COMPRESSION</a></span></code> |
| <div class="block">Compression algorithm to use if not specified on the command line</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static <a href="https://docs.oracle.com/javase/8/docs/api/java/text/DecimalFormat.html?is-external=true" title="class or interface in java.text">DecimalFormat</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#DELIMITED_DECIMAL_FORMAT">DELIMITED_DECIMAL_FORMAT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#includesMemstoreTS">includesMemstoreTS</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/regionserver/DataBlockEncodingTool.html#INT_FORMAT">INT_FORMAT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#MB_SEC_COEF">MB_SEC_COEF</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#NS_IN_SEC">NS_IN_SEC</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/regionserver/DataBlockEncodingTool.html#OPT_BENCHMARK_N_OMIT">OPT_BENCHMARK_N_OMIT</a></span></code> |
| <div class="block">Number of first runs of every benchmark to omit from statistics</div> |
| </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/regionserver/DataBlockEncodingTool.html#OPT_BENCHMARK_N_TIMES">OPT_BENCHMARK_N_TIMES</a></span></code> |
| <div class="block">Number of times to run each benchmark</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/regionserver/DataBlockEncodingTool.html#OPT_COMPRESSION_ALGORITHM">OPT_COMPRESSION_ALGORITHM</a></span></code> |
| <div class="block">What compression algorithm to test</div> |
| </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/regionserver/DataBlockEncodingTool.html#OPT_HFILE_NAME">OPT_HFILE_NAME</a></span></code> |
| <div class="block">HFile name to be used in benchmark</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/regionserver/DataBlockEncodingTool.html#OPT_KV_LIMIT">OPT_KV_LIMIT</a></span></code> |
| <div class="block">Maximum number of key/value pairs to process in a single benchmark run</div> |
| </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/regionserver/DataBlockEncodingTool.html#OPT_MEASURE_THROUGHPUT">OPT_MEASURE_THROUGHPUT</a></span></code> |
| <div class="block">Whether to run a benchmark to measure read throughput</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/regionserver/DataBlockEncodingTool.html#OPT_OMIT_CORRECTNESS_TEST">OPT_OMIT_CORRECTNESS_TEST</a></span></code> |
| <div class="block">If this is specified, no correctness testing will be done</div> |
| </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/regionserver/DataBlockEncodingTool.html#PCT_FORMAT">PCT_FORMAT</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#rawKVs">rawKVs</a></span></code> </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/regionserver/DataBlockEncodingTool.html#totalCFLength">totalCFLength</a></span></code> </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/regionserver/DataBlockEncodingTool.html#totalKeyLength">totalKeyLength</a></span></code> </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/regionserver/DataBlockEncodingTool.html#totalKeyRedundancyLength">totalKeyRedundancyLength</a></span></code> </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/regionserver/DataBlockEncodingTool.html#totalPrefixLength">totalPrefixLength</a></span></code> </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/regionserver/DataBlockEncodingTool.html#totalValueLength">totalValueLength</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#USE_TAG">USE_TAG</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#useHBaseChecksum">useHBaseChecksum</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
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| <h3>Constructor Summary</h3> |
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| <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/regionserver/DataBlockEncodingTool.html#DataBlockEncodingTool-java.lang.String-">DataBlockEncodingTool</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> compressionAlgorithmName)</code> </td> |
| </tr> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <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="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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/regionserver/DataBlockEncodingTool.html#benchmarkAlgorithm-org.apache.hadoop.hbase.io.compress.Compression.Algorithm-java.lang.String-byte:A-int-int-">benchmarkAlgorithm</a></span>(org.apache.hadoop.hbase.io.compress.Compression.Algorithm algorithm, |
| <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> name, |
| byte[] buffer, |
| int offset, |
| int length)</code> |
| <div class="block">Check decompress performance of a given algorithm and print it.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#benchmarkCodecs--">benchmarkCodecs</a></span>()</code> |
| <div class="block">Benchmark codec's speed.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#benchmarkDefaultCompression-int-byte:A-">benchmarkDefaultCompression</a></span>(int totalSize, |
| byte[] rawBuffer)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#benchmarkEncoder-int-org.apache.hadoop.hbase.io.encoding.EncodedDataBlock-">benchmarkEncoder</a></span>(int previousTotalSize, |
| org.apache.hadoop.hbase.io.encoding.EncodedDataBlock codec)</code> |
| <div class="block">Benchmark compression/decompression throughput.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#checkStatistics-org.apache.hadoop.hbase.regionserver.KeyValueScanner-int-">checkStatistics</a></span>(org.apache.hadoop.hbase.regionserver.KeyValueScanner scanner, |
| int kvLimit)</code> |
| <div class="block">Check statistics for given HFile for different data block encoders.</div> |
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| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#displayStatistics--">displayStatistics</a></span>()</code> |
| <div class="block">Display statistics of different compression algorithms.</div> |
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| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#main-java.lang.String:A-">main</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[] args)</code> |
| <div class="block">A command line interface to benchmarks.</div> |
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| <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/regionserver/DataBlockEncodingTool.html#outputSavings-java.lang.String-long-long-">outputSavings</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> caption, |
| long part, |
| long whole)</code> </td> |
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| <td class="colFirst"><code>private static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#outputTuple-java.lang.String-java.lang.String-java.lang.Object...-">outputTuple</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> caption, |
| <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> format, |
| <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>... values)</code> </td> |
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| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#outputTuplePct-java.lang.String-long-">outputTuplePct</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> caption, |
| long size)</code> </td> |
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| <td class="colFirst"><code>private static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#printBenchmarkResult-int-java.util.List-org.apache.hadoop.hbase.regionserver.DataBlockEncodingTool.Manipulation-">printBenchmarkResult</a></span>(int totalSize, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>> durationsInNanoSec, |
| <a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.Manipulation.html" title="enum in org.apache.hadoop.hbase.regionserver">DataBlockEncodingTool.Manipulation</a> manipulation)</code> </td> |
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| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>private static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#printUsage-org.apache.hbase.thirdparty.org.apache.commons.cli.Options-">printUsage</a></span>(org.apache.hbase.thirdparty.org.apache.commons.cli.Options options)</code> </td> |
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| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#testCodecs-org.apache.hadoop.conf.Configuration-int-java.lang.String-java.lang.String-boolean-boolean-">testCodecs</a></span>(org.apache.hadoop.conf.Configuration conf, |
| int kvLimit, |
| <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> hfilePath, |
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| boolean doBenchmark, |
| boolean doVerify)</code> |
| <div class="block">Test a data block encoder on the given HFile.</div> |
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| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#verifyCodecs-org.apache.hadoop.hbase.regionserver.KeyValueScanner-int-">verifyCodecs</a></span>(org.apache.hadoop.hbase.regionserver.KeyValueScanner scanner, |
| int kvLimit)</code> |
| <div class="block">Verify if all data block encoders are working properly.</div> |
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| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>compressionAlgorithmName</code> - What kind of algorithm should be used |
| as baseline for comparison (e.g. lzo, gz).</dd> |
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| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.174">checkStatistics</a>(org.apache.hadoop.hbase.regionserver.KeyValueScanner scanner, |
| int kvLimit) |
| 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">Check statistics for given HFile for different data block encoders.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>scanner</code> - Of file which will be compressed.</dd> |
| <dd><code>kvLimit</code> - Maximal count of KeyValue which will be processed.</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> - thrown if scanner is invalid</dd> |
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| <pre>public boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.257">verifyCodecs</a>(org.apache.hadoop.hbase.regionserver.KeyValueScanner scanner, |
| int kvLimit) |
| 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">Verify if all data block encoders are working properly.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>scanner</code> - Of file which was compressed.</dd> |
| <dd><code>kvLimit</code> - Maximal count of KeyValue which will be processed.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if all data block encoders compressed/decompressed correctly.</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> - thrown if scanner is invalid</dd> |
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| 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">Benchmark codec's speed.</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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| <pre>private int <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.346">benchmarkEncoder</a>(int previousTotalSize, |
| org.apache.hadoop.hbase.io.encoding.EncodedDataBlock codec)</pre> |
| <div class="block">Benchmark compression/decompression throughput.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>previousTotalSize</code> - Total size used for verification. Use -1 if |
| unknown.</dd> |
| <dd><code>codec</code> - Tested encoder.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Size of uncompressed data.</dd> |
| </dl> |
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| byte[] rawBuffer) |
| 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> |
| <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> |
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| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.410">benchmarkAlgorithm</a>(org.apache.hadoop.hbase.io.compress.Compression.Algorithm algorithm, |
| <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> name, |
| byte[] buffer, |
| int offset, |
| int length) |
| 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">Check decompress performance of a given algorithm and print it.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>algorithm</code> - Compression algorithm.</dd> |
| <dd><code>name</code> - Name of algorithm.</dd> |
| <dd><code>buffer</code> - Buffer to be compressed.</dd> |
| <dd><code>offset</code> - Position of the beginning of the data.</dd> |
| <dd><code>length</code> - Length of data in buffer.</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> |
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| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>> durationsInNanoSec, |
| <a href="../../../../../org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.Manipulation.html" title="enum in org.apache.hadoop.hbase.regionserver">DataBlockEncodingTool.Manipulation</a> manipulation)</pre> |
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| <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>... values)</pre> |
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| 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">Display statistics of different compression algorithms.</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> |
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| long size)</pre> |
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| long part, |
| long whole)</pre> |
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| int kvLimit, |
| <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> hfilePath, |
| <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> compressionName, |
| boolean doBenchmark, |
| boolean doVerify) |
| 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">Test a data block encoder on the given HFile. Output results to console.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>kvLimit</code> - The limit of KeyValue which will be analyzed.</dd> |
| <dd><code>hfilePath</code> - an HFile path on the file system.</dd> |
| <dd><code>compressionName</code> - Compression algorithm used for comparison.</dd> |
| <dd><code>doBenchmark</code> - Run performance benchmarks.</dd> |
| <dd><code>doVerify</code> - Verify correctness.</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> - When pathName is incorrect.</dd> |
| </dl> |
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| <pre>private static void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.641">printUsage</a>(org.apache.hbase.thirdparty.org.apache.commons.cli.Options options)</pre> |
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| <h4>main</h4> |
| <pre>public static void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DataBlockEncodingTool.html#line.664">main</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[] args) |
| 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">A command line interface to benchmarks. Parses command-line arguments and |
| runs the appropriate benchmarks.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>args</code> - Should have length at least 1 and holds the file path to HFile.</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> - If you specified the wrong file.</dd> |
| </dl> |
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