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| <h2 title="Class TaskAttemptID" class="title">Class TaskAttemptID</h2> |
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| <li><a href="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.ID</a></li> |
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| <li>org.apache.hadoop.mapred.TaskAttemptID</li> |
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| <br> |
| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class <span class="typeNameLabel">TaskAttemptID</span> |
| extends <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a></pre> |
| <div class="block">TaskAttemptID represents the immutable and unique identifier for |
| a task attempt. Each task attempt is one particular instance of a Map or |
| Reduce Task identified by its TaskID. |
| |
| TaskAttemptID consists of 2 parts. First part is the |
| <a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred"><code>TaskID</code></a>, that this TaskAttemptID belongs to. |
| Second part is the task attempt number. <br> |
| An example TaskAttemptID is : |
| <code>attempt_200707121733_0003_m_000005_0</code> , which represents the |
| zeroth task attempt for the fifth map task in the third job |
| running at the jobtracker started at <code>200707121733</code>. |
| <p> |
| Applications should never construct or parse TaskAttemptID strings |
| , but rather use appropriate constructors or <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#forName-java.lang.String-"><code>forName(String)</code></a> |
| method.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred"><code>JobID</code></a>, |
| <a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred"><code>TaskID</code></a></dd> |
| </dl> |
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| <h3>Fields inherited from class org.apache.hadoop.mapreduce.<a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a></h3> |
| <code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#ATTEMPT">ATTEMPT</a></code></li> |
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| <code><a href="../../../../org/apache/hadoop/mapreduce/ID.html#id">id</a>, <a href="../../../../org/apache/hadoop/mapreduce/ID.html#SEPARATOR">SEPARATOR</a></code></li> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#TaskAttemptID--">TaskAttemptID</a></span>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#TaskAttemptID-java.lang.String-int-boolean-int-int-">TaskAttemptID</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> jtIdentifier, |
| int jobId, |
| boolean isMap, |
| int taskId, |
| int id)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#TaskAttemptID-java.lang.String-int-org.apache.hadoop.mapreduce.TaskType-int-int-"><code>TaskAttemptID(String, int, TaskType, int, int)</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#TaskAttemptID-java.lang.String-int-org.apache.hadoop.mapreduce.TaskType-int-int-">TaskAttemptID</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> jtIdentifier, |
| int jobId, |
| <a href="../../../../org/apache/hadoop/mapreduce/TaskType.html" title="enum in org.apache.hadoop.mapreduce">TaskType</a> type, |
| int taskId, |
| int id)</code> |
| <div class="block">Constructs a TaskId object from given parts.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#TaskAttemptID-org.apache.hadoop.mapred.TaskID-int-">TaskAttemptID</a></span>(<a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</a> taskId, |
| int id)</code> |
| <div class="block">Constructs a TaskAttemptID object from given <a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred"><code>TaskID</code></a>.</div> |
| </td> |
| </tr> |
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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="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><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd"> </span></span></caption> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#downgrade-org.apache.hadoop.mapreduce.TaskAttemptID-">downgrade</a></span>(<a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a> old)</code> |
| <div class="block">Downgrade a new TaskAttemptID to an old one</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#forName-java.lang.String-">forName</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> str)</code> |
| <div class="block">Construct a TaskAttemptID object from given string</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#getJobID--">getJobID</a></span>()</code> |
| <div class="block">Returns the <a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><code>JobID</code></a> object that this task attempt belongs to</div> |
| </td> |
| </tr> |
| <tr id="i3" 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/mapred/TaskAttemptID.html#getTaskAttemptIDsPattern-java.lang.String-java.lang.Integer-java.lang.Boolean-java.lang.Integer-java.lang.Integer-">getTaskAttemptIDsPattern</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> jtIdentifier, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> jobId, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a> isMap, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> taskId, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> attemptId)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr id="i4" 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/mapred/TaskAttemptID.html#getTaskAttemptIDsPattern-java.lang.String-java.lang.Integer-org.apache.hadoop.mapreduce.TaskType-java.lang.Integer-java.lang.Integer-">getTaskAttemptIDsPattern</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> jtIdentifier, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> jobId, |
| <a href="../../../../org/apache/hadoop/mapreduce/TaskType.html" title="enum in org.apache.hadoop.mapreduce">TaskType</a> type, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> taskId, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> attemptId)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#getTaskID--">getTaskID</a></span>()</code> |
| <div class="block">Returns the <a href="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><code>TaskID</code></a> object that this task attempt belongs to</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#read-java.io.DataInput-">read</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"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
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| </table> |
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| <h3>Methods inherited from class org.apache.hadoop.mapreduce.<a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a></h3> |
| <code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#appendTo-java.lang.StringBuilder-">appendTo</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#compareTo-org.apache.hadoop.mapreduce.ID-">compareTo</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#equals-java.lang.Object-">equals</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getTaskType--">getTaskType</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#hashCode--">hashCode</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#isMap--">isMap</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#readFields-java.io.DataInput-">readFields</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#toString--">toString</a>, <a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#write-java.io.DataOutput-">write</a></code></li> |
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| <code><a href="../../../../org/apache/hadoop/mapreduce/ID.html#getId--">getId</a></code></li> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="TaskAttemptID-org.apache.hadoop.mapred.TaskID-int-"> |
| <!-- --> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>TaskAttemptID</h4> |
| <pre>public TaskAttemptID(<a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</a> taskId, |
| int id)</pre> |
| <div class="block">Constructs a TaskAttemptID object from given <a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred"><code>TaskID</code></a>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>taskId</code> - TaskID that this task belongs to</dd> |
| <dd><code>id</code> - the task attempt number</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="TaskAttemptID-java.lang.String-int-boolean-int-int-"> |
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| <h4>TaskAttemptID</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 TaskAttemptID(<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> jtIdentifier, |
| int jobId, |
| boolean isMap, |
| int taskId, |
| int id)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html#TaskAttemptID-java.lang.String-int-org.apache.hadoop.mapreduce.TaskType-int-int-"><code>TaskAttemptID(String, int, TaskType, int, int)</code></a>.</span></div> |
| <div class="block">Constructs a TaskId object from given parts.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>jtIdentifier</code> - jobTracker identifier</dd> |
| <dd><code>jobId</code> - job number</dd> |
| <dd><code>isMap</code> - whether the tip is a map</dd> |
| <dd><code>taskId</code> - taskId number</dd> |
| <dd><code>id</code> - the task attempt number</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="TaskAttemptID-java.lang.String-int-org.apache.hadoop.mapreduce.TaskType-int-int-"> |
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| <h4>TaskAttemptID</h4> |
| <pre>public TaskAttemptID(<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> jtIdentifier, |
| int jobId, |
| <a href="../../../../org/apache/hadoop/mapreduce/TaskType.html" title="enum in org.apache.hadoop.mapreduce">TaskType</a> type, |
| int taskId, |
| int id)</pre> |
| <div class="block">Constructs a TaskId object from given parts.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>jtIdentifier</code> - jobTracker identifier</dd> |
| <dd><code>jobId</code> - job number</dd> |
| <dd><code>type</code> - the TaskType</dd> |
| <dd><code>taskId</code> - taskId number</dd> |
| <dd><code>id</code> - the task attempt number</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="TaskAttemptID--"> |
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| <h4>TaskAttemptID</h4> |
| <pre>public TaskAttemptID()</pre> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="downgrade-org.apache.hadoop.mapreduce.TaskAttemptID-"> |
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| </a> |
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| <h4>downgrade</h4> |
| <pre>public static <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</a> downgrade(<a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a> old)</pre> |
| <div class="block">Downgrade a new TaskAttemptID to an old one</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>old</code> - the new id</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>either old or a new TaskAttemptID constructed to match old</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTaskID--"> |
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| <h4>getTaskID</h4> |
| <pre>public <a href="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred">TaskID</a> getTaskID()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getTaskID--">TaskAttemptID</a></code></span></div> |
| <div class="block">Returns the <a href="../../../../org/apache/hadoop/mapreduce/TaskID.html" title="class in org.apache.hadoop.mapreduce"><code>TaskID</code></a> object that this task attempt belongs to</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getTaskID--">getTaskID</a></code> in class <code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getJobID--"> |
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| </a> |
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| <h4>getJobID</h4> |
| <pre>public <a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a> getJobID()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getJobID--">TaskAttemptID</a></code></span></div> |
| <div class="block">Returns the <a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce"><code>JobID</code></a> object that this task attempt belongs to</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html#getJobID--">getJobID</a></code> in class <code><a href="../../../../org/apache/hadoop/mapreduce/TaskAttemptID.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptID</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="read-java.io.DataInput-"> |
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| <h4>read</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 static <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</a> read(<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="deprecatedLabel">Deprecated.</span> </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> |
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| <h4>forName</h4> |
| <pre>public static <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</a> forName(<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> str) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></pre> |
| <div class="block">Construct a TaskAttemptID object from given string</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>constructed TaskAttemptID object or null if the given String is null</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if the given string is malformed</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getTaskAttemptIDsPattern</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 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> getTaskAttemptIDsPattern(<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> jtIdentifier, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> jobId, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a> isMap, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> taskId, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> attemptId)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block">Returns a regex pattern which matches task attempt IDs. Arguments can |
| be given null, in which case that part of the regex will be generic. |
| For example to obtain a regex matching <i>all task attempt IDs</i> |
| of <i>any jobtracker</i>, in <i>any job</i>, of the <i>first |
| map task</i>, we would use : |
| <pre> |
| TaskAttemptID.getTaskAttemptIDsPattern(null, null, true, 1, null); |
| </pre> |
| which will return : |
| <pre> "attempt_[^_]*_[0-9]*_m_000001_[0-9]*" </pre></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>jtIdentifier</code> - jobTracker identifier, or null</dd> |
| <dd><code>jobId</code> - job number, or null</dd> |
| <dd><code>isMap</code> - whether the tip is a map, or null</dd> |
| <dd><code>taskId</code> - taskId number, or null</dd> |
| <dd><code>attemptId</code> - the task attempt number, or null</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a regex pattern matching TaskAttemptIDs</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTaskAttemptIDsPattern-java.lang.String-java.lang.Integer-org.apache.hadoop.mapreduce.TaskType-java.lang.Integer-java.lang.Integer-"> |
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| <h4>getTaskAttemptIDsPattern</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 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> getTaskAttemptIDsPattern(<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> jtIdentifier, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> jobId, |
| <a href="../../../../org/apache/hadoop/mapreduce/TaskType.html" title="enum in org.apache.hadoop.mapreduce">TaskType</a> type, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> taskId, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a> attemptId)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block">Returns a regex pattern which matches task attempt IDs. Arguments can |
| be given null, in which case that part of the regex will be generic. |
| For example to obtain a regex matching <i>all task attempt IDs</i> |
| of <i>any jobtracker</i>, in <i>any job</i>, of the <i>first |
| map task</i>, we would use : |
| <pre> |
| TaskAttemptID.getTaskAttemptIDsPattern(null, null, TaskType.MAP, 1, null); |
| </pre> |
| which will return : |
| <pre> "attempt_[^_]*_[0-9]*_m_000001_[0-9]*" </pre></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>jtIdentifier</code> - jobTracker identifier, or null</dd> |
| <dd><code>jobId</code> - job number, or null</dd> |
| <dd><code>type</code> - the <a href="../../../../org/apache/hadoop/mapreduce/TaskType.html" title="enum in org.apache.hadoop.mapreduce"><code>TaskType</code></a></dd> |
| <dd><code>taskId</code> - taskId number, or null</dd> |
| <dd><code>attemptId</code> - the task attempt number, or null</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a regex pattern matching TaskAttemptIDs</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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