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| <div class="subTitle">org.apache.hadoop.mapred.lib</div> |
| <h2 title="Class CombineFileInputFormat" class="title">Class CombineFileInputFormat<K,V></h2> |
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| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.InputFormat</a><K,V></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">org.apache.hadoop.mapreduce.lib.input.FileInputFormat</a><K,V></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat</a><K,V></li> |
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| <li>org.apache.hadoop.mapred.lib.CombineFileInputFormat<K,V></li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</a><K,V></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/mapred/lib/CombineSequenceFileInputFormat.html" title="class in org.apache.hadoop.mapred.lib">CombineSequenceFileInputFormat</a>, <a href="../../../../../org/apache/hadoop/mapred/lib/CombineTextInputFormat.html" title="class in org.apache.hadoop.mapred.lib">CombineTextInputFormat</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public abstract class <span class="typeNameLabel">CombineFileInputFormat<K,V></span> |
| extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">CombineFileInputFormat</a><K,V> |
| implements <a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</a><K,V></pre> |
| <div class="block">An abstract <a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred"><code>InputFormat</code></a> that returns <a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib"><code>CombineFileSplit</code></a>'s |
| in <a href="../../../../../org/apache/hadoop/mapred/InputFormat.html#getSplits-org.apache.hadoop.mapred.JobConf-int-"><code>InputFormat.getSplits(JobConf, int)</code></a> method. |
| Splits are constructed from the files under the input paths. |
| A split cannot have files from different pools. |
| Each split returned may contain blocks from different files. |
| If a maxSplitSize is specified, then blocks on the same node are |
| combined to form a single split. Blocks that are left over are |
| then combined with other blocks in the same rack. |
| If maxSplitSize is not specified, then blocks from the same rack |
| are combined in a single split; no attempt is made to create |
| node-local splits. |
| If the maxSplitSize is equal to the block size, then this class |
| is similar to the default spliting behaviour in Hadoop: each |
| block is a locally processed split. |
| Subclasses implement <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> |
| to construct <code>RecordReader</code>'s for <code>CombineFileSplit</code>'s.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib"><code>CombineFileSplit</code></a></dd> |
| </dl> |
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| <h3>Field Summary</h3> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from class org.apache.hadoop.mapreduce.lib.input.<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">CombineFileInputFormat</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#SPLIT_MINSIZE_PERNODE">SPLIT_MINSIZE_PERNODE</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#SPLIT_MINSIZE_PERRACK">SPLIT_MINSIZE_PERRACK</a></code></li> |
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| <h3>Fields inherited from class org.apache.hadoop.mapreduce.lib.input.<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#DEFAULT_LIST_STATUS_NUM_THREADS">DEFAULT_LIST_STATUS_NUM_THREADS</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#INPUT_DIR">INPUT_DIR</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#INPUT_DIR_NONRECURSIVE_IGNORE_SUBDIRS">INPUT_DIR_NONRECURSIVE_IGNORE_SUBDIRS</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#INPUT_DIR_RECURSIVE">INPUT_DIR_RECURSIVE</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#LIST_STATUS_NUM_THREADS">LIST_STATUS_NUM_THREADS</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#NUM_INPUT_FILES">NUM_INPUT_FILES</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#PATHFILTER_CLASS">PATHFILTER_CLASS</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#SPLIT_MAXSIZE">SPLIT_MAXSIZE</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#SPLIT_MINSIZE">SPLIT_MINSIZE</a></code></li> |
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| <h3>Constructor Summary</h3> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
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| <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/mapred/lib/CombineFileInputFormat.html#CombineFileInputFormat--">CombineFileInputFormat</a></span>()</code> |
| <div class="block">default constructor</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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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="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract 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><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated 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>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#createPool-org.apache.hadoop.mapred.JobConf-java.util.List-">createPool</a></span>(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf, |
| <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/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</a>> filters)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createPool-java.util.List-"><code>CombineFileInputFormat.createPool(List)</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#createPool-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.fs.PathFilter...-">createPool</a></span>(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf, |
| <a href="../../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</a>... filters)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createPool-org.apache.hadoop.fs.PathFilter...-"><code>CombineFileInputFormat.createPool(PathFilter...)</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a> split, |
| <a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a> context)</code> |
| <div class="block">This is not implemented yet.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a> split, |
| <a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job, |
| <a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a> reporter)</code> |
| <div class="block">This is not implemented yet.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#getSplits-org.apache.hadoop.mapred.JobConf-int-">getSplits</a></span>(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job, |
| int numSplits)</code> |
| <div class="block">Logically split the set of input files for the job.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#isSplitable-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-">isSplitable</a></span>(<a href="../../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</a> fs, |
| <a href="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file)</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#listStatus-org.apache.hadoop.mapred.JobConf-">listStatus</a></span>(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job)</code> |
| <div class="block">List input directories.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hadoop.mapreduce.lib.input.<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">CombineFileInputFormat</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createPool-java.util.List-">createPool</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createPool-org.apache.hadoop.fs.PathFilter...-">createPool</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#getFileBlockLocations-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.FileStatus-">getFileBlockLocations</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#getSplits-org.apache.hadoop.mapreduce.JobContext-">getSplits</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#isSplitable-org.apache.hadoop.mapreduce.JobContext-org.apache.hadoop.fs.Path-">isSplitable</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#setMaxSplitSize-long-">setMaxSplitSize</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#setMinSplitSizeNode-long-">setMinSplitSizeNode</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#setMinSplitSizeRack-long-">setMinSplitSizeRack</a></code></li> |
| </ul> |
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| <h3>Methods inherited from class org.apache.hadoop.mapreduce.lib.input.<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPath-org.apache.hadoop.mapreduce.Job-org.apache.hadoop.fs.Path-">addInputPath</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPathRecursively-java.util.List-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.PathFilter-">addInputPathRecursively</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPaths-org.apache.hadoop.mapreduce.Job-java.lang.String-">addInputPaths</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#computeSplitSize-long-long-long-">computeSplitSize</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getBlockIndex-org.apache.hadoop.fs.BlockLocation:A-long-">getBlockIndex</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getFormatMinSplitSize--">getFormatMinSplitSize</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputDirRecursive-org.apache.hadoop.mapreduce.JobContext-">getInputDirRecursive</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPathFilter-org.apache.hadoop.mapreduce.JobContext-">getInputPathFilter</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPaths-org.apache.hadoop.mapreduce.JobContext-">getInputPaths</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMaxSplitSize-org.apache.hadoop.mapreduce.JobContext-">getMaxSplitSize</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMinSplitSize-org.apache.hadoop.mapreduce.JobContext-">getMinSplitSize</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#listStatus-org.apache.hadoop.mapreduce.JobContext-">listStatus</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#makeSplit-org.apache.hadoop.fs.Path-long-long-java.lang.String:A-">makeSplit</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#makeSplit-org.apache.hadoop.fs.Path-long-long-java.lang.String:A-java.lang.String:A-">makeSplit</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputDirRecursive-org.apache.hadoop.mapreduce.Job-boolean-">setInputDirRecursive</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPathFilter-org.apache.hadoop.mapreduce.Job-java.lang.Class-">setInputPathFilter</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths-org.apache.hadoop.mapreduce.Job-org.apache.hadoop.fs.Path...-">setInputPaths</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths-org.apache.hadoop.mapreduce.Job-java.lang.String-">setInputPaths</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMaxInputSplitSize-org.apache.hadoop.mapreduce.Job-long-">setMaxInputSplitSize</a>, <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMinInputSplitSize-org.apache.hadoop.mapreduce.Job-long-">setMinInputSplitSize</a></code></li> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <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>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="CombineFileInputFormat--"> |
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| <h4>CombineFileInputFormat</h4> |
| <pre>public CombineFileInputFormat()</pre> |
| <div class="block">default constructor</div> |
| </li> |
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| <h3>Method Detail</h3> |
| <a name="getSplits-org.apache.hadoop.mapred.JobConf-int-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getSplits</h4> |
| <pre>public <a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>[] getSplits(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job, |
| 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> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html#getSplits-org.apache.hadoop.mapred.JobConf-int-">InputFormat</a></code></span></div> |
| <div class="block">Logically split the set of input files for the job. |
| |
| <p>Each <a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><code>InputSplit</code></a> is then assigned to an individual <a href="../../../../../org/apache/hadoop/mapred/Mapper.html" title="interface in org.apache.hadoop.mapred"><code>Mapper</code></a> |
| for processing.</p> |
| |
| <p><i>Note</i>: The split is a <i>logical</i> split of the inputs and the |
| input files are not physically split into chunks. For e.g. a split could |
| be <i><input-file-path, start, offset></i> tuple.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html#getSplits-org.apache.hadoop.mapred.JobConf-int-">getSplits</a></code> in interface <code><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>job</code> - job configuration.</dd> |
| <dd><code>numSplits</code> - the desired number of splits, a hint.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an array of <a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><code>InputSplit</code></a>s for the job.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createPool-org.apache.hadoop.mapred.JobConf-java.util.List-"> |
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| <h4>createPool</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> |
| protected void createPool(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf, |
| <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/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</a>> filters)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createPool-java.util.List-"><code>CombineFileInputFormat.createPool(List)</code></a>.</span></div> |
| <div class="block">Create a new pool and add the filters to it. |
| A split cannot have files from different pools.</div> |
| </li> |
| </ul> |
| <a name="createPool-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.fs.PathFilter...-"> |
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| <h4>createPool</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> |
| protected void createPool(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> conf, |
| <a href="../../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</a>... filters)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createPool-org.apache.hadoop.fs.PathFilter...-"><code>CombineFileInputFormat.createPool(PathFilter...)</code></a>.</span></div> |
| <div class="block">Create a new pool and add the filters to it. |
| A pathname can satisfy any one of the specified filters. |
| A split cannot have files from different pools.</div> |
| </li> |
| </ul> |
| <a name="getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-"> |
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| <h4>getRecordReader</h4> |
| <pre>public abstract <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>> getRecordReader(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a> split, |
| <a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job, |
| <a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a> reporter) |
| 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">This is not implemented yet.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></code> in interface <code><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>split</code> - the <a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><code>InputSplit</code></a></dd> |
| <dd><code>job</code> - the job that this split belongs to</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred"><code>RecordReader</code></a></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-"> |
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| <h4>createRecordReader</h4> |
| <pre>public <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>> createRecordReader(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a> split, |
| <a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a> context) |
| 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/lib/input/CombineFileInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">CombineFileInputFormat</a></code></span></div> |
| <div class="block">This is not implemented yet.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></code> in class <code><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">CombineFileInputFormat</a><<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>split</code> - the split to be read</dd> |
| <dd><code>context</code> - the information about the task</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a new record reader</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="listStatus-org.apache.hadoop.mapred.JobConf-"> |
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| <h4>listStatus</h4> |
| <pre>protected <a href="../../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</a>[] listStatus(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job) |
| 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">List input directories. |
| Subclasses may override to, e.g., select only files matching a regular |
| expression.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>job</code> - the job to list input paths for</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>array of FileStatus objects</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 zero items.</dd> |
| </dl> |
| </li> |
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| <a name="isSplitable-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-"> |
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| <h4>isSplitable</h4> |
| <pre>protected boolean isSplitable(<a href="../../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</a> fs, |
| <a href="../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a> file)</pre> |
| </li> |
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