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6<TITLE>
7JobID (Hadoop 0.20.1 API)
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18        parent.document.title="JobID (Hadoop 0.20.1 API)";
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58&nbsp;<A HREF="../../../../org/apache/hadoop/mapred/JobHistory.Values.html" title="enum in org.apache.hadoop.mapred"><B>PREV CLASS</B></A>&nbsp;
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79  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;<A HREF="#fields_inherited_from_class_org.apache.hadoop.mapreduce.JobID">FIELD</A>&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
81DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
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87<HR>
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89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.mapred</FONT>
92<BR>
93Class JobID</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.ID</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/hadoop/mapred/ID.html" title="class in org.apache.hadoop.mapred">org.apache.hadoop.mapred.ID</A>
98          <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.JobID</A>
99              <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapred.JobID</B>
100</PRE>
101<DL>
102<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&gt;, <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A>, <A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&lt;<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A>&gt;</DD>
103</DL>
104<HR>
105<B>Deprecated.</B>
106<P>
107<DL>
108<DT><PRE><FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A>
109</FONT>public class <B>JobID</B><DT>extends <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A></DL>
110</PRE>
111
112<P>
113JobID represents the immutable and unique identifier for
114 the job. JobID consists of two parts. First part
115 represents the jobtracker identifier, so that jobID to jobtracker map
116 is defined. For cluster setup this string is the jobtracker
117 start time, for local setting, it is "local".
118 Second part of the JobID is the job number. <br> 
119 An example JobID is :
120 <code>job_200707121733_0003</code> , which represents the third job
121 running at the jobtracker started at <code>200707121733</code>.
122 <p>
123 Applications should never construct or parse JobID strings, but rather
124 use appropriate constructors or <A HREF="../../../../org/apache/hadoop/mapred/JobID.html#forName(java.lang.String)"><CODE>forName(String)</CODE></A> method.
125<P>
126
127<P>
128<DL>
129<DT><B>See Also:</B><DD><A HREF="../../../../org/apache/hadoop/mapred/TaskID.html" title="class in org.apache.hadoop.mapred"><CODE>TaskID</CODE></A>,
130<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred"><CODE>TaskAttemptID</CODE></A></DL>
131<HR>
132
133<P>
134<!-- =========== FIELD SUMMARY =========== -->
135
136<A NAME="field_summary"><!-- --></A>
137<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
138<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
139<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
140<B>Field Summary</B></FONT></TH>
141</TR>
142</TABLE>
143&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.JobID"><!-- --></A>
144<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
145<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
146<TH ALIGN="left"><B>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></B></TH>
147</TR>
148<TR BGCOLOR="white" CLASS="TableRowColor">
149<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html#idFormat">idFormat</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html#JOB">JOB</A></CODE></TD>
150</TR>
151</TABLE>
152&nbsp;<A NAME="fields_inherited_from_class_org.apache.hadoop.mapreduce.ID"><!-- --></A>
153<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
154<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
155<TH ALIGN="left"><B>Fields inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../org/apache/hadoop/mapreduce/ID.html" title="class in org.apache.hadoop.mapreduce">ID</A></B></TH>
156</TR>
157<TR BGCOLOR="white" CLASS="TableRowColor">
158<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#id">id</A>, <A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#SEPARATOR">SEPARATOR</A></CODE></TD>
159</TR>
160</TABLE>
161&nbsp;
162<!-- ======== CONSTRUCTOR SUMMARY ======== -->
163
164<A NAME="constructor_summary"><!-- --></A>
165<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
166<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
167<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
168<B>Constructor Summary</B></FONT></TH>
169</TR>
170<TR BGCOLOR="white" CLASS="TableRowColor">
171<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobID.html#JobID()">JobID</A></B>()</CODE>
172
173<BR>
174&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;&nbsp;</TD>
175</TR>
176<TR BGCOLOR="white" CLASS="TableRowColor">
177<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobID.html#JobID(java.lang.String, int)">JobID</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;jtIdentifier,
178      int&nbsp;id)</CODE>
179
180<BR>
181&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Constructs a JobID object</TD>
182</TR>
183</TABLE>
184&nbsp;
185<!-- ========== METHOD SUMMARY =========== -->
186
187<A NAME="method_summary"><!-- --></A>
188<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
189<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
190<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
191<B>Method Summary</B></FONT></TH>
192</TR>
193<TR BGCOLOR="white" CLASS="TableRowColor">
194<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
195<CODE>static&nbsp;<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A></CODE></FONT></TD>
196<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobID.html#downgrade(org.apache.hadoop.mapreduce.JobID)">downgrade</A></B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A>&nbsp;old)</CODE>
197
198<BR>
199&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Downgrade a new JobID to an old one</TD>
200</TR>
201<TR BGCOLOR="white" CLASS="TableRowColor">
202<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
203<CODE>static&nbsp;<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A></CODE></FONT></TD>
204<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobID.html#forName(java.lang.String)">forName</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;str)</CODE>
205
206<BR>
207&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;Construct a JobId object from given string</TD>
208</TR>
209<TR BGCOLOR="white" CLASS="TableRowColor">
210<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
211<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
212<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobID.html#getJobIDsPattern(java.lang.String, java.lang.Integer)">getJobIDsPattern</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;jtIdentifier,
213                 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</A>&nbsp;jobId)</CODE>
214
215<BR>
216&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;</TD>
217</TR>
218<TR BGCOLOR="white" CLASS="TableRowColor">
219<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
220<CODE>static&nbsp;<A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A></CODE></FONT></TD>
221<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/JobID.html#read(java.io.DataInput)">read</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>&nbsp;in)</CODE>
222
223<BR>
224&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;</TD>
225</TR>
226</TABLE>
227&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.JobID"><!-- --></A>
228<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
229<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
230<TH ALIGN="left"><B>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></B></TH>
231</TR>
232<TR BGCOLOR="white" CLASS="TableRowColor">
233<TD><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></TD>
234</TR>
235</TABLE>
236&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.ID"><!-- --></A>
237<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
238<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
239<TH ALIGN="left"><B>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></B></TH>
240</TR>
241<TR BGCOLOR="white" CLASS="TableRowColor">
242<TD><CODE><A HREF="../../../../org/apache/hadoop/mapreduce/ID.html#getId()">getId</A></CODE></TD>
243</TR>
244</TABLE>
245&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
246<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
247<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
248<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
249</TR>
250<TR BGCOLOR="white" CLASS="TableRowColor">
251<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
252</TR>
253</TABLE>
254&nbsp;
255<P>
256
257<!-- ========= CONSTRUCTOR DETAIL ======== -->
258
259<A NAME="constructor_detail"><!-- --></A>
260<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
261<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
262<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
263<B>Constructor Detail</B></FONT></TH>
264</TR>
265</TABLE>
266
267<A NAME="JobID(java.lang.String, int)"><!-- --></A><H3>
268JobID</H3>
269<PRE>
270public <B>JobID</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;jtIdentifier,
271             int&nbsp;id)</PRE>
272<DL>
273<DD><B>Deprecated.</B>&nbsp;<DD>Constructs a JobID object
274<P>
275<DL>
276<DT><B>Parameters:</B><DD><CODE>jtIdentifier</CODE> - jobTracker identifier<DD><CODE>id</CODE> - job number</DL>
277</DL>
278<HR>
279
280<A NAME="JobID()"><!-- --></A><H3>
281JobID</H3>
282<PRE>
283public <B>JobID</B>()</PRE>
284<DL>
285<DD><B>Deprecated.</B>&nbsp;</DL>
286
287<!-- ============ METHOD DETAIL ========== -->
288
289<A NAME="method_detail"><!-- --></A>
290<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
291<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
292<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
293<B>Method Detail</B></FONT></TH>
294</TR>
295</TABLE>
296
297<A NAME="downgrade(org.apache.hadoop.mapreduce.JobID)"><!-- --></A><H3>
298downgrade</H3>
299<PRE>
300public static <A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> <B>downgrade</B>(<A HREF="../../../../org/apache/hadoop/mapreduce/JobID.html" title="class in org.apache.hadoop.mapreduce">JobID</A>&nbsp;old)</PRE>
301<DL>
302<DD><B>Deprecated.</B>&nbsp;<DD>Downgrade a new JobID to an old one
303<P>
304<DD><DL>
305<DT><B>Parameters:</B><DD><CODE>old</CODE> - a new or old JobID
306<DT><B>Returns:</B><DD>either old or a new JobID build to match old</DL>
307</DD>
308</DL>
309<HR>
310
311<A NAME="read(java.io.DataInput)"><!-- --></A><H3>
312read</H3>
313<PRE>
314<FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A>
315</FONT>public static <A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> <B>read</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>&nbsp;in)
316                  throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
317<DL>
318<DD><B>Deprecated.</B>&nbsp;
319<P>
320<DD><DL>
321
322<DT><B>Throws:</B>
323<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
324</DD>
325</DL>
326<HR>
327
328<A NAME="forName(java.lang.String)"><!-- --></A><H3>
329forName</H3>
330<PRE>
331public static <A HREF="../../../../org/apache/hadoop/mapred/JobID.html" title="class in org.apache.hadoop.mapred">JobID</A> <B>forName</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;str)
332                     throws <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</A></PRE>
333<DL>
334<DD><B>Deprecated.</B>&nbsp;<DD>Construct a JobId object from given string
335<P>
336<DD><DL>
337
338<DT><B>Returns:</B><DD>constructed JobId object or null if the given String is null
339<DT><B>Throws:</B>
340<DD><CODE><A HREF="http://java.sun.com/javase/6/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</DL>
341</DD>
342</DL>
343<HR>
344
345<A NAME="getJobIDsPattern(java.lang.String, java.lang.Integer)"><!-- --></A><H3>
346getJobIDsPattern</H3>
347<PRE>
348<FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A>
349</FONT>public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getJobIDsPattern</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;jtIdentifier,
350                                                 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</A>&nbsp;jobId)</PRE>
351<DL>
352<DD><B>Deprecated.</B>&nbsp;
353<P>
354<DD>Returns a regex pattern which matches task IDs. Arguments can
355 be given null, in which case that part of the regex will be generic. 
356 For example to obtain a regex matching <i>any job</i> 
357 run on the jobtracker started at <i>200707121733</i>, we would use :
358 <pre> 
359 JobID.getTaskIDsPattern("200707121733", null);
360 </pre>
361 which will return :
362 <pre> "job_200707121733_[0-9]*" </pre>
363<P>
364<DD><DL>
365<DT><B>Parameters:</B><DD><CODE>jtIdentifier</CODE> - jobTracker identifier, or null<DD><CODE>jobId</CODE> - job number, or null
366<DT><B>Returns:</B><DD>a regex pattern matching JobIDs</DL>
367</DD>
368</DL>
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