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| <h2 title="Class TableSnapshotInputFormatImpl" class="title">Class TableSnapshotInputFormatImpl</h2> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.65">TableSnapshotInputFormatImpl</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">Hadoop MR API-agnostic implementation for mapreduce over table snapshots.</div> |
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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>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.InputSplit.html" title="class in org.apache.hadoop.hbase.mapreduce">TableSnapshotInputFormatImpl.InputSplit</a></span></code> |
| <div class="block">Implementation class for InputSplit logic common between mapred and mapreduce.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.RecordReader.html" title="class in org.apache.hadoop.hbase.mapreduce">TableSnapshotInputFormatImpl.RecordReader</a></span></code> |
| <div class="block">Implementation class for RecordReader logic common between mapred and mapreduce.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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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 static float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#DEFAULT_LOCALITY_CUTOFF_MULTIPLIER">DEFAULT_LOCALITY_CUTOFF_MULTIPLIER</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/mapreduce/TableSnapshotInputFormatImpl.html#LOCALITY_CUTOFF_MULTIPLIER">LOCALITY_CUTOFF_MULTIPLIER</a></span></code> |
| <div class="block">See <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getBestLocations-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.HDFSBlocksDistribution-int-"><code>getBestLocations(Configuration, HDFSBlocksDistribution, int)</code></a></div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/mapreduce/TableSnapshotInputFormatImpl.html#NUM_SPLITS_PER_REGION">NUM_SPLITS_PER_REGION</a></span></code> |
| <div class="block">For MapReduce jobs running multiple mappers per region, determines |
| number of splits to generate per region.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected 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/mapreduce/TableSnapshotInputFormatImpl.html#RESTORE_DIR_KEY">RESTORE_DIR_KEY</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#SNAPSHOT_INPUTFORMAT_LOCALITY_ENABLED_DEFAULT">SNAPSHOT_INPUTFORMAT_LOCALITY_ENABLED_DEFAULT</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/mapreduce/TableSnapshotInputFormatImpl.html#SNAPSHOT_INPUTFORMAT_LOCALITY_ENABLED_KEY">SNAPSHOT_INPUTFORMAT_LOCALITY_ENABLED_KEY</a></span></code> |
| <div class="block">Whether to calculate the block location for splits.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/mapreduce/TableSnapshotInputFormatImpl.html#SNAPSHOT_INPUTFORMAT_ROW_LIMIT_PER_INPUTSPLIT">SNAPSHOT_INPUTFORMAT_ROW_LIMIT_PER_INPUTSPLIT</a></span></code> |
| <div class="block">In some scenario, scan limited rows on each InputSplit for sampling data extraction</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/mapreduce/TableSnapshotInputFormatImpl.html#SNAPSHOT_NAME_KEY">SNAPSHOT_NAME_KEY</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <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/mapreduce/TableSnapshotInputFormatImpl.html#SPLIT_ALGO">SPLIT_ALGO</a></span></code> |
| <div class="block">For MapReduce jobs running multiple mappers per region, determines |
| what split algorithm we should be using to find split points for scanners.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#TableSnapshotInputFormatImpl--">TableSnapshotInputFormatImpl</a></span>()</code> </td> |
| </tr> |
| </table> |
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| <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="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>private static <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/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/mapreduce/TableSnapshotInputFormatImpl.html#calculateLocationsForInputSplit-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.client.TableDescriptor-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.fs.Path-boolean-">calculateLocationsForInputSplit</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/client/TableDescriptor.html" title="interface in org.apache.hadoop.hbase.client">TableDescriptor</a> htd, |
| <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hri, |
| org.apache.hadoop.fs.Path tableDir, |
| boolean localityEnabled)</code> |
| <div class="block">Compute block locations for snapshot files (which will get the locations for referred hfiles) |
| only when localityEnabled is true.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#extractScanFromConf-org.apache.hadoop.conf.Configuration-">extractScanFromConf</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <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/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/mapreduce/TableSnapshotInputFormatImpl.html#getBestLocations-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.HDFSBlocksDistribution-">getBestLocations</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution</a> blockDistribution)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private static <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/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/mapreduce/TableSnapshotInputFormatImpl.html#getBestLocations-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.HDFSBlocksDistribution-int-">getBestLocations</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution</a> blockDistribution, |
| int numTopsAtMost)</code> |
| <div class="block">This computes the locations to be passed from the InputSplit.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <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="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getRegionInfosFromManifest-org.apache.hadoop.hbase.snapshot.SnapshotManifest-">getRegionInfosFromManifest</a></span>(<a href="../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getSnapshotManifest-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.FileSystem-">getSnapshotManifest</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <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> snapshotName, |
| org.apache.hadoop.fs.Path rootDir, |
| org.apache.hadoop.fs.FileSystem fs)</code> </td> |
| </tr> |
| <tr id="i6" 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/mapreduce/TableSnapshotInputFormatImpl.html#getSnapshotName-org.apache.hadoop.conf.Configuration-">getSnapshotName</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/util/RegionSplitter.SplitAlgorithm.html" title="interface in org.apache.hadoop.hbase.util">RegionSplitter.SplitAlgorithm</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getSplitAlgo-org.apache.hadoop.conf.Configuration-">getSplitAlgo</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <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="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.InputSplit.html" title="class in org.apache.hadoop.hbase.mapreduce">TableSnapshotInputFormatImpl.InputSplit</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getSplits-org.apache.hadoop.conf.Configuration-">getSplits</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static <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="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.InputSplit.html" title="class in org.apache.hadoop.hbase.mapreduce">TableSnapshotInputFormatImpl.InputSplit</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getSplits-org.apache.hadoop.hbase.client.Scan-org.apache.hadoop.hbase.snapshot.SnapshotManifest-java.util.List-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-">getSplits</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a> scan, |
| <a href="../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest, |
| <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="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regionManifests, |
| org.apache.hadoop.fs.Path restoreDir, |
| org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static <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="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.InputSplit.html" title="class in org.apache.hadoop.hbase.mapreduce">TableSnapshotInputFormatImpl.InputSplit</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#getSplits-org.apache.hadoop.hbase.client.Scan-org.apache.hadoop.hbase.snapshot.SnapshotManifest-java.util.List-org.apache.hadoop.fs.Path-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.util.RegionSplitter.SplitAlgorithm-int-">getSplits</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a> scan, |
| <a href="../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest, |
| <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="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regionManifests, |
| org.apache.hadoop.fs.Path restoreDir, |
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| <a href="../../../../../org/apache/hadoop/hbase/util/RegionSplitter.SplitAlgorithm.html" title="interface in org.apache.hadoop.hbase.util">RegionSplitter.SplitAlgorithm</a> sa, |
| int numSplits)</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/mapreduce/TableSnapshotInputFormatImpl.html#setInput-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.fs.Path-">setInput</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <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> snapshotName, |
| org.apache.hadoop.fs.Path restoreDir)</code> |
| <div class="block">Configures the job to use TableSnapshotInputFormat to read from a snapshot.</div> |
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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/mapreduce/TableSnapshotInputFormatImpl.html#setInput-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.hbase.util.RegionSplitter.SplitAlgorithm-int-">setInput</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <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> snapshotName, |
| org.apache.hadoop.fs.Path restoreDir, |
| <a href="../../../../../org/apache/hadoop/hbase/util/RegionSplitter.SplitAlgorithm.html" title="interface in org.apache.hadoop.hbase.util">RegionSplitter.SplitAlgorithm</a> splitAlgo, |
| int numSplitsPerRegion)</code> |
| <div class="block">Configures the job to use TableSnapshotInputFormat to read from a snapshot.</div> |
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| <div class="block">For MapReduce jobs running multiple mappers per region, determines |
| what split algorithm we should be using to find split points for scanners.</div> |
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| <div class="block">For MapReduce jobs running multiple mappers per region, determines |
| number of splits to generate per region.</div> |
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| <div class="block">Whether to calculate the block location for splits. Default to true. |
| If the computing layer runs outside of HBase cluster, the block locality does not master. |
| Setting this value to false could skip the calculation and save some time. |
| |
| Set access modifier to "public" so that these could be accessed by test classes of |
| both org.apache.hadoop.hbase.mapred |
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| <div class="block">In some scenario, scan limited rows on each InputSplit for sampling data extraction</div> |
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| <pre>public static <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="../../../../../org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.InputSplit.html" title="class in org.apache.hadoop.hbase.mapreduce">TableSnapshotInputFormatImpl.InputSplit</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.289">getSplits</a>(org.apache.hadoop.conf.Configuration conf) |
| 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> |
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| <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> snapshotName, |
| org.apache.hadoop.fs.Path rootDir, |
| org.apache.hadoop.fs.FileSystem fs) |
| 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> |
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| <a href="../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest, |
| <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="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regionManifests, |
| org.apache.hadoop.fs.Path restoreDir, |
| org.apache.hadoop.conf.Configuration conf) |
| 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> |
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| <a href="../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest, |
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| org.apache.hadoop.fs.Path restoreDir, |
| org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/util/RegionSplitter.SplitAlgorithm.html" title="interface in org.apache.hadoop.hbase.util">RegionSplitter.SplitAlgorithm</a> sa, |
| int numSplits) |
| 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> |
| </dl> |
| </li> |
| </ul> |
| <a name="calculateLocationsForInputSplit-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.client.TableDescriptor-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.fs.Path-boolean-"> |
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| <h4>calculateLocationsForInputSplit</h4> |
| <pre>private static <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/String.html?is-external=true" title="class or interface in java.lang">String</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.431">calculateLocationsForInputSplit</a>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/client/TableDescriptor.html" title="interface in org.apache.hadoop.hbase.client">TableDescriptor</a> htd, |
| <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hri, |
| org.apache.hadoop.fs.Path tableDir, |
| boolean localityEnabled) |
| 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">Compute block locations for snapshot files (which will get the locations for referred hfiles) |
| only when localityEnabled is true.</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="getBestLocations-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.HDFSBlocksDistribution-int-"> |
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| <h4>getBestLocations</h4> |
| <pre>private static <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/String.html?is-external=true" title="class or interface in java.lang">String</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.455">getBestLocations</a>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution</a> blockDistribution, |
| int numTopsAtMost)</pre> |
| <div class="block">This computes the locations to be passed from the InputSplit. MR/Yarn schedulers does not take |
| weights into account, thus will treat every location passed from the input split as equal. We |
| do not want to blindly pass all the locations, since we are creating one split per region, and |
| the region's blocks are all distributed throughout the cluster unless favorite node assignment |
| is used. On the expected stable case, only one location will contain most of the blocks as |
| local. |
| On the other hand, in favored node assignment, 3 nodes will contain highly local blocks. Here |
| we are doing a simple heuristic, where we will pass all hosts which have at least 80% |
| (hbase.tablesnapshotinputformat.locality.cutoff.multiplier) as much block locality as the top |
| host with the best locality. |
| Return at most numTopsAtMost locations if there are more than that.</div> |
| </li> |
| </ul> |
| <a name="getBestLocations-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.HDFSBlocksDistribution-"> |
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| </a> |
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| <h4>getBestLocations</h4> |
| <pre>public static <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/String.html?is-external=true" title="class or interface in java.lang">String</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.495">getBestLocations</a>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution</a> blockDistribution)</pre> |
| </li> |
| </ul> |
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| <h4>getSnapshotName</h4> |
| <pre>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> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.501">getSnapshotName</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| </li> |
| </ul> |
| <a name="setInput-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.fs.Path-"> |
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| <h4>setInput</h4> |
| <pre>public static void <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.518">setInput</a>(org.apache.hadoop.conf.Configuration conf, |
| <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> snapshotName, |
| org.apache.hadoop.fs.Path restoreDir) |
| 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">Configures the job to use TableSnapshotInputFormat to read from a snapshot.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the job to configuration</dd> |
| <dd><code>snapshotName</code> - the name of the snapshot to read from</dd> |
| <dd><code>restoreDir</code> - a temporary directory to restore the snapshot into. Current user should have |
| write permissions to this directory, and this should not be a subdirectory of rootdir. |
| After the job is finished, restoreDir can be deleted.</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 an error occurs</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setInput-org.apache.hadoop.conf.Configuration-java.lang.String-org.apache.hadoop.fs.Path-org.apache.hadoop.hbase.util.RegionSplitter.SplitAlgorithm-int-"> |
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| <h4>setInput</h4> |
| <pre>public static void <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.html#line.534">setInput</a>(org.apache.hadoop.conf.Configuration conf, |
| <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> snapshotName, |
| org.apache.hadoop.fs.Path restoreDir, |
| <a href="../../../../../org/apache/hadoop/hbase/util/RegionSplitter.SplitAlgorithm.html" title="interface in org.apache.hadoop.hbase.util">RegionSplitter.SplitAlgorithm</a> splitAlgo, |
| int numSplitsPerRegion) |
| 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">Configures the job to use TableSnapshotInputFormat to read from a snapshot.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the job to configure</dd> |
| <dd><code>snapshotName</code> - the name of the snapshot to read from</dd> |
| <dd><code>restoreDir</code> - a temporary directory to restore the snapshot into. Current user should have |
| write permissions to this directory, and this should not be a subdirectory of rootdir. |
| After the job is finished, restoreDir can be deleted.</dd> |
| <dd><code>numSplitsPerRegion</code> - how many input splits to generate per one region</dd> |
| <dd><code>splitAlgo</code> - SplitAlgorithm to be used when generating InputSplits</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 an error occurs</dd> |
| </dl> |
| </li> |
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