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| <h2 title="Class JobID" class="title">Class JobID</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><a href="../../../../org/apache/hadoop/mapred/ID.html" title="class in org.apache.hadoop.mapred">org.apache.hadoop.mapred.ID</a></li> |
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| <ul class="inheritance"> |
| <li>org.apache.hadoop.mapred.JobID</li> |
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| <br> |
| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class <span class="typeNameLabel">JobID</span> |
| extends <a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</a></pre> |
| <div class="block">JobID represents the immutable and unique identifier for |
| the job. JobID consists of two parts. First part |
| represents the jobtracker identifier, so that jobID to jobtracker map |
| is defined. For cluster setup this string is the jobtracker |
| start time, for local setting, it is "local". |
| Second part of the JobID is the job number. <br> |
| An example JobID is : |
| <code>job_200707121733_0003</code> , which represents the third job |
| running at the jobtracker started at <code>200707121733</code>. |
| <p> |
| Applications should never construct or parse JobID strings, but rather |
| use appropriate constructors or <a href="../../../../org/apache/hadoop/mapred/JobID.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/TaskID.html" title="class in org.apache.hadoop.mapred"><code>TaskID</code></a>, |
| <a href="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred"><code>TaskAttemptID</code></a></dd> |
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| <h3>Fields inherited from class org.apache.hadoop.mapreduce.<a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</a></h3> |
| <code><a href="../../../../org/apache/hadoop/mapreduce/JobID.html#idFormat">idFormat</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#JOB">JOB</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#JOBID_REGEX">JOBID_REGEX</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/JobID.html#JobID--">JobID</a></span>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/mapred/JobID.html#JobID-java.lang.String-int-">JobID</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 id)</code> |
| <div class="block">Constructs a JobID object</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <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/JobID.html#downgrade-org.apache.hadoop.mapreduce.JobID-">downgrade</a></span>(<a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</a> old)</code> |
| <div class="block">Downgrade a new JobID to an old one</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <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/JobID.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 JobId object from given string</div> |
| </td> |
| </tr> |
| <tr id="i2" 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/JobID.html#getJobIDsPattern-java.lang.String-java.lang.Integer-">getJobIDsPattern</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)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <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/JobID.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> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.mapreduce.JobID"> |
| <!-- --> |
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| <h3>Methods inherited from class org.apache.hadoop.mapreduce.<a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</a></h3> |
| <code><a href="../../../../org/apache/hadoop/mapreduce/JobID.html#appendTo-java.lang.StringBuilder-">appendTo</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#compareTo-org.apache.hadoop.mapreduce.ID-">compareTo</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#equals-java.lang.Object-">equals</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#getJtIdentifier--">getJtIdentifier</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#hashCode--">hashCode</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#readFields-java.io.DataInput-">readFields</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#toString--">toString</a>, <a href="../../../../org/apache/hadoop/mapreduce/JobID.html#write-java.io.DataOutput-">write</a></code></li> |
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| <h3>Methods inherited from class org.apache.hadoop.mapreduce.<a href="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</a></h3> |
| <code><a href="../../../../org/apache/hadoop/mapreduce/ID.html#getId--">getId</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#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#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#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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| <div class="details"> |
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| <li class="blockList"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="JobID-java.lang.String-int-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>JobID</h4> |
| <pre>public JobID(<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 id)</pre> |
| <div class="block">Constructs a JobID object</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>jtIdentifier</code> - jobTracker identifier</dd> |
| <dd><code>id</code> - job number</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="JobID--"> |
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| </a> |
| <ul class="blockListLast"> |
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| <h4>JobID</h4> |
| <pre>public JobID()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="downgrade-org.apache.hadoop.mapreduce.JobID-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>downgrade</h4> |
| <pre>public static <a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</a> downgrade(<a href="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</a> old)</pre> |
| <div class="block">Downgrade a new JobID to an old one</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>old</code> - a new or old JobID</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>either old or a new JobID build to match old</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="read-java.io.DataInput-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <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/JobID.html" title="class in org.apache.hadoop.mapred">JobID</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> |
| <a name="forName-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>forName</h4> |
| <pre>public static <a href="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</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 JobId object from given string</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>constructed JobId 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> |
| <a name="getJobIDsPattern-java.lang.String-java.lang.Integer-"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getJobIDsPattern</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> getJobIDsPattern(<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)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| <div class="block">Returns a regex pattern which matches task 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>any job</i> |
| run on the jobtracker started at <i>200707121733</i>, we would use : |
| <pre> |
| JobID.getTaskIDsPattern("200707121733", null); |
| </pre> |
| which will return : |
| <pre> "job_200707121733_[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> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a regex pattern matching JobIDs</dd> |
| </dl> |
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