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| <div class="subTitle">org.apache.hadoop.hbase.mapreduce</div> |
| <h2 title="Class MultiTableInputFormat" class="title">Class MultiTableInputFormat</h2> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.mapreduce.InputFormat<<a href="../../../../../org/apache/hadoop/hbase/io/ImmutableBytesWritable.html" title="class in org.apache.hadoop.hbase.io">ImmutableBytesWritable</a>,<a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a>></li> |
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| <li><a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html" title="class in org.apache.hadoop.hbase.mapreduce">org.apache.hadoop.hbase.mapreduce.MultiTableInputFormatBase</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.mapreduce.MultiTableInputFormat</li> |
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| <dd>org.apache.hadoop.conf.Configurable</dd> |
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| <pre>@InterfaceAudience.Public |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#line.57">MultiTableInputFormat</a> |
| extends <a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html" title="class in org.apache.hadoop.hbase.mapreduce">MultiTableInputFormatBase</a> |
| implements org.apache.hadoop.conf.Configurable</pre> |
| <div class="block">Convert HBase tabular data from multiple scanners into a format that |
| is consumable by Map/Reduce. |
| |
| <p> |
| Usage example |
| </p> |
| |
| <pre> |
| List<Scan> scans = new ArrayList<Scan>(); |
| |
| Scan scan1 = new Scan(); |
| scan1.withStartRow(firstRow1); |
| scan1.withStopRow(lastRow1); |
| scan1.setAttribute(Scan.SCAN_ATTRIBUTES_TABLE_NAME, table1); |
| scans.add(scan1); |
| |
| Scan scan2 = new Scan(); |
| scan2.withStartRow(firstRow2); |
| scan2.withStopRow(lastRow2); |
| scan1.setAttribute(Scan.SCAN_ATTRIBUTES_TABLE_NAME, table2); |
| scans.add(scan2); |
| |
| TableMapReduceUtil.initTableMapperJob(scans, TableMapper.class, Text.class, |
| IntWritable.class, job); |
| </pre></div> |
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| <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/MultiTableInputFormat.html#SCANS">SCANS</a></span></code> |
| <div class="block">Job parameter that specifies the scan list.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#MultiTableInputFormat--">MultiTableInputFormat</a></span>()</code> </td> |
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| <td class="colFirst"><code>org.apache.hadoop.conf.Configuration</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#getConf--">getConf</a></span>()</code> |
| <div class="block">Returns the current configuration.</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/mapreduce/MultiTableInputFormat.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration configuration)</code> |
| <div class="block">Sets the configuration.</div> |
| </td> |
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| <h3>Methods inherited from class org.apache.hadoop.hbase.mapreduce.<a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html" title="class in org.apache.hadoop.hbase.mapreduce">MultiTableInputFormatBase</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html#getScans--">getScans</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html#getSplits-org.apache.hadoop.mapreduce.JobContext-">getSplits</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html#includeRegionInSplit-byte:A-byte:A-">includeRegionInSplit</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html#setScans-java.util.List-">setScans</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/MultiTableInputFormatBase.html#setTableRecordReader-org.apache.hadoop.hbase.mapreduce.TableRecordReader-">setTableRecordReader</a></code></li> |
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| <a name="SCANS"> |
| <!-- --> |
| </a> |
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| <li class="blockList"> |
| <h4>SCANS</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#line.61">SCANS</a></pre> |
| <div class="block">Job parameter that specifies the scan list.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.hadoop.hbase.mapreduce.MultiTableInputFormat.SCANS">Constant Field Values</a></dd> |
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| <h4>MultiTableInputFormat</h4> |
| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#line.57">MultiTableInputFormat</a>()</pre> |
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| <pre>public org.apache.hadoop.conf.Configuration <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#line.73">getConf</a>()</pre> |
| <div class="block">Returns the current configuration.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>getConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The current configuration.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><code>Configurable.getConf()</code></dd> |
| </dl> |
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| <h4>setConf</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/MultiTableInputFormat.html#line.86">setConf</a>(org.apache.hadoop.conf.Configuration configuration)</pre> |
| <div class="block">Sets the configuration. This is used to set the details for the tables to |
| be scanned.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>setConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>configuration</code> - The configuration to set.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><code>Configurable.setConf( |
| org.apache.hadoop.conf.Configuration)</code></dd> |
| </dl> |
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