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| <h2 title="Class FileSplit" class="title">Class FileSplit</h2> |
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| <li><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.InputSplit</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.mapred.FileSplit</li> |
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| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class <span class="typeNameLabel">FileSplit</span> |
| extends <a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a> |
| implements <a href="../../../../org/apache/hadoop/mapred/InputSplitWithLocationInfo.html" title="interface in org.apache.hadoop.mapred">InputSplitWithLocationInfo</a></pre> |
| <div class="block">A section of an input file. Returned by <a href="../../../../org/apache/hadoop/mapred/InputFormat.html#getSplits-org.apache.hadoop.mapred.JobConf-int-"><code>InputFormat.getSplits(JobConf, int)</code></a> and passed to |
| <a href="../../../../org/apache/hadoop/mapred/InputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-"><code>InputFormat.getRecordReader(InputSplit,JobConf,Reporter)</code></a>.</div> |
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| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colLast" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#FileSplit--">FileSplit</a></span>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code> </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#FileSplit-org.apache.hadoop.mapreduce.lib.input.FileSplit-">FileSplit</a></span>(<a href="../../../../org/apache/hadoop/mapreduce/lib/input/FileSplit.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileSplit</a> fs)</code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code> </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#FileSplit-org.apache.hadoop.fs.Path-long-long-org.apache.hadoop.mapred.JobConf-">FileSplit</a></span>(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file, |
| long start, |
| long length, |
| <a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code> </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#FileSplit-org.apache.hadoop.fs.Path-long-long-java.lang.String:A-">FileSplit</a></span>(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file, |
| long start, |
| long length, |
| <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>[] hosts)</code> |
| <div class="block">Constructs a split with host information</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code> </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#FileSplit-org.apache.hadoop.fs.Path-long-long-java.lang.String:A-java.lang.String:A-">FileSplit</a></span>(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file, |
| long start, |
| long length, |
| <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>[] hosts, |
| <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>[] inMemoryHosts)</code> |
| <div class="block">Constructs a split with host information</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
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| <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>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#getLength--">getLength</a></span>()</code> |
| <div class="block">The number of bytes in the file to process.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/SplitLocationInfo.html" title="class in org.apache.hadoop.mapred">SplitLocationInfo</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#getLocationInfo--">getLocationInfo</a></span>()</code> |
| <div class="block">Gets info about which nodes the input split is stored on and how it is |
| stored at each location.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><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/mapred/FileSplit.html#getLocations--">getLocations</a></span>()</code> |
| <div class="block">Get the list of nodes by name where the data for the split would be local.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#getPath--">getPath</a></span>()</code> |
| <div class="block">The file containing this split's data.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#getStart--">getStart</a></span>()</code> |
| <div class="block">The position of the first byte in the file to process.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#readFields-java.io.DataInput-">readFields</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in)</code> |
| <div class="block">Deserialize the fields of this object from <code>in</code>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><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/mapred/FileSplit.html#toString--">toString</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/FileSplit.html#write-java.io.DataOutput-">write</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out)</code> |
| <div class="block">Serialize the fields of this object to <code>out</code>.</div> |
| </td> |
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| <li class="blockList"><a name="constructor.detail"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="FileSplit--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>FileSplit</h4> |
| <pre>protected FileSplit()</pre> |
| </li> |
| </ul> |
| <a name="FileSplit-org.apache.hadoop.fs.Path-long-long-org.apache.hadoop.mapred.JobConf-"> |
| <!-- --> |
| </a> |
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| <h4>FileSplit</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public FileSplit(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file, |
| long start, |
| long length, |
| <a href="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block">Constructs a split.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>file</code> - the file name</dd> |
| <dd><code>start</code> - the position of the first byte in the file to process</dd> |
| <dd><code>length</code> - the number of bytes in the file to process</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="FileSplit-org.apache.hadoop.fs.Path-long-long-java.lang.String:A-"> |
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| <h4>FileSplit</h4> |
| <pre>public FileSplit(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file, |
| long start, |
| long length, |
| <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>[] hosts)</pre> |
| <div class="block">Constructs a split with host information</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>file</code> - the file name</dd> |
| <dd><code>start</code> - the position of the first byte in the file to process</dd> |
| <dd><code>length</code> - the number of bytes in the file to process</dd> |
| <dd><code>hosts</code> - the list of hosts containing the block, possibly null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="FileSplit-org.apache.hadoop.fs.Path-long-long-java.lang.String:A-java.lang.String:A-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>FileSplit</h4> |
| <pre>public FileSplit(<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file, |
| long start, |
| long length, |
| <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>[] hosts, |
| <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>[] inMemoryHosts)</pre> |
| <div class="block">Constructs a split with host information</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>file</code> - the file name</dd> |
| <dd><code>start</code> - the position of the first byte in the file to process</dd> |
| <dd><code>length</code> - the number of bytes in the file to process</dd> |
| <dd><code>hosts</code> - the list of hosts containing the block, possibly null</dd> |
| <dd><code>inMemoryHosts</code> - the list of hosts containing the block in memory</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="FileSplit-org.apache.hadoop.mapreduce.lib.input.FileSplit-"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>FileSplit</h4> |
| <pre>public FileSplit(<a href="../../../../org/apache/hadoop/mapreduce/lib/input/FileSplit.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileSplit</a> fs)</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
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| <h3>Method Detail</h3> |
| <a name="getPath--"> |
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| </a> |
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| <h4>getPath</h4> |
| <pre>public <a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> getPath()</pre> |
| <div class="block">The file containing this split's data.</div> |
| </li> |
| </ul> |
| <a name="getStart--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getStart</h4> |
| <pre>public long getStart()</pre> |
| <div class="block">The position of the first byte in the file to process.</div> |
| </li> |
| </ul> |
| <a name="getLength--"> |
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| </a> |
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| <h4>getLength</h4> |
| <pre>public long getLength()</pre> |
| <div class="block">The number of bytes in the file to process.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapred/InputSplit.html#getLength--">getLength</a></code> in interface <code><a href="../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html#getLength--">getLength</a></code> in class <code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of bytes in the split</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toString--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>toString</h4> |
| <pre>public <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> toString()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code> in class <code><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></code></dd> |
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| <h4>write</h4> |
| <pre>public void write(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/hadoop/io/Writable.html#write-java.io.DataOutput-">Writable</a></code></span></div> |
| <div class="block">Serialize the fields of this object to <code>out</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/Writable.html#write-java.io.DataOutput-">write</a></code> in interface <code><a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>out</code> - <code>DataOuput</code> to serialize this object 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> |
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| <h4>readFields</h4> |
| <pre>public void readFields(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/hadoop/io/Writable.html#readFields-java.io.DataInput-">Writable</a></code></span></div> |
| <div class="block">Deserialize the fields of this object from <code>in</code>. |
| |
| <p>For efficiency, implementations should attempt to re-use storage in the |
| existing object where possible.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/io/Writable.html#readFields-java.io.DataInput-">readFields</a></code> in interface <code><a href="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>in</code> - <code>DataInput</code> to deseriablize this object from.</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> |
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| <a name="getLocations--"> |
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| <h4>getLocations</h4> |
| <pre>public <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>[] getLocations() |
| 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"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html#getLocations--">InputSplit</a></code></span></div> |
| <div class="block">Get the list of nodes by name where the data for the split would be local. |
| The locations do not need to be serialized.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapred/InputSplit.html#getLocations--">getLocations</a></code> in interface <code><a href="../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html#getLocations--">getLocations</a></code> in class <code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new array of the node nodes.</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> |
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| <h4>getLocationInfo</h4> |
| <pre>@InterfaceStability.Evolving |
| public <a href="../../../../org/apache/hadoop/mapred/SplitLocationInfo.html" title="class in org.apache.hadoop.mapred">SplitLocationInfo</a>[] getLocationInfo() |
| 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"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html#getLocationInfo--">InputSplit</a></code></span></div> |
| <div class="block">Gets info about which nodes the input split is stored on and how it is |
| stored at each location.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapred/InputSplitWithLocationInfo.html#getLocationInfo--">getLocationInfo</a></code> in interface <code><a href="../../../../org/apache/hadoop/mapred/InputSplitWithLocationInfo.html" title="interface in org.apache.hadoop.mapred">InputSplitWithLocationInfo</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html#getLocationInfo--">getLocationInfo</a></code> in class <code><a href="../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>list of <code>SplitLocationInfo</code>s describing how the split |
| data is stored at each location. A null value indicates that all the |
| locations have the data stored on disk.</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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