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7TaskLog (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapred</FONT>
92<BR>
93Class TaskLog</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 "><B>org.apache.hadoop.mapred.TaskLog</B>
97</PRE>
98<HR>
99<DL>
100<DT><PRE>public class <B>TaskLog</B><DT>extends <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></DL>
101</PRE>
102
103<P>
104A simple logger to handle the task-specific user logs.
105 This class uses the system property <code>hadoop.log.dir</code>.
106<P>
107
108<P>
109<HR>
110
111<P>
112<!-- ======== NESTED CLASS SUMMARY ======== -->
113
114<A NAME="nested_class_summary"><!-- --></A>
115<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
116<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
117<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
118<B>Nested Class Summary</B></FONT></TH>
119</TR>
120<TR BGCOLOR="white" CLASS="TableRowColor">
121<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
122<CODE>static&nbsp;class</CODE></FONT></TD>
123<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.LogName.html" title="enum in org.apache.hadoop.mapred">TaskLog.LogName</A></B></CODE>
124
125<BR>
126&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The filter for userlogs.</TD>
127</TR>
128</TABLE>
129&nbsp;
130<!-- ======== CONSTRUCTOR SUMMARY ======== -->
131
132<A NAME="constructor_summary"><!-- --></A>
133<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
134<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
135<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
136<B>Constructor Summary</B></FONT></TH>
137</TR>
138<TR BGCOLOR="white" CLASS="TableRowColor">
139<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#TaskLog()">TaskLog</A></B>()</CODE>
140
141<BR>
142&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
143</TR>
144</TABLE>
145&nbsp;
146<!-- ========== METHOD SUMMARY =========== -->
147
148<A NAME="method_summary"><!-- --></A>
149<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
150<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
151<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
152<B>Method Summary</B></FONT></TH>
153</TR>
154<TR BGCOLOR="white" CLASS="TableRowColor">
155<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
156<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>
157<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#addCommand(java.util.List, boolean)">addCommand</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
158           boolean&nbsp;isExecutable)</CODE>
159
160<BR>
161&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add quotes to each of the command strings and
162 return as a single string</TD>
163</TR>
164<TR BGCOLOR="white" CLASS="TableRowColor">
165<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
166<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;</CODE></FONT></TD>
167<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#captureDebugOut(java.util.List, java.io.File)">captureDebugOut</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
168                <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;debugoutFilename)</CODE>
169
170<BR>
171&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Wrap a command in a shell to capture debug script's
172 stdout and stderr to debugout.</TD>
173</TR>
174<TR BGCOLOR="white" CLASS="TableRowColor">
175<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
176<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;</CODE></FONT></TD>
177<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#captureOutAndError(java.util.List, java.io.File, java.io.File, long)">captureOutAndError</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
178                   <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stdoutFilename,
179                   <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stderrFilename,
180                   long&nbsp;tailLength)</CODE>
181
182<BR>
183&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Wrap a command in a shell to capture stdout and stderr to files.</TD>
184</TR>
185<TR BGCOLOR="white" CLASS="TableRowColor">
186<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
187<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;</CODE></FONT></TD>
188<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#captureOutAndError(java.util.List, java.util.List, java.io.File, java.io.File, long)">captureOutAndError</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;setup,
189                   <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
190                   <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stdoutFilename,
191                   <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stderrFilename,
192                   long&nbsp;tailLength)</CODE>
193
194<BR>
195&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Wrap a command in a shell to capture stdout and stderr to files.</TD>
196</TR>
197<TR BGCOLOR="white" CLASS="TableRowColor">
198<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
199<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;</CODE></FONT></TD>
200<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#captureOutAndError(java.util.List, java.util.List, java.io.File, java.io.File, long, java.lang.String)">captureOutAndError</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;setup,
201                   <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
202                   <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stdoutFilename,
203                   <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stderrFilename,
204                   long&nbsp;tailLength,
205                   <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;pidFileName)</CODE>
206
207<BR>
208&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Wrap a command in a shell to capture stdout and stderr to files.</TD>
209</TR>
210<TR BGCOLOR="white" CLASS="TableRowColor">
211<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
212<CODE>static&nbsp;void</CODE></FONT></TD>
213<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#cleanup(int)">cleanup</A></B>(int&nbsp;logsRetainHours)</CODE>
214
215<BR>
216&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purge old user logs.</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="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A></CODE></FONT></TD>
221<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#getIndexFile(java.lang.String)">getIndexFile</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;taskid)</CODE>
222
223<BR>
224&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
225</TR>
226<TR BGCOLOR="white" CLASS="TableRowColor">
227<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
228<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A></CODE></FONT></TD>
229<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#getIndexFile(java.lang.String, boolean)">getIndexFile</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;taskid,
230             boolean&nbsp;isCleanup)</CODE>
231
232<BR>
233&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
234</TR>
235<TR BGCOLOR="white" CLASS="TableRowColor">
236<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
237<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A></CODE></FONT></TD>
238<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#getRealTaskLogFileLocation(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskLog.LogName)">getRealTaskLogFileLocation</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid,
239                           <A HREF="../../../../org/apache/hadoop/mapred/TaskLog.LogName.html" title="enum in org.apache.hadoop.mapred">TaskLog.LogName</A>&nbsp;filter)</CODE>
240
241<BR>
242&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
243</TR>
244<TR BGCOLOR="white" CLASS="TableRowColor">
245<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
246<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A></CODE></FONT></TD>
247<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#getTaskLogFile(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskLog.LogName)">getTaskLogFile</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid,
248               <A HREF="../../../../org/apache/hadoop/mapred/TaskLog.LogName.html" title="enum in org.apache.hadoop.mapred">TaskLog.LogName</A>&nbsp;filter)</CODE>
249
250<BR>
251&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
252</TR>
253<TR BGCOLOR="white" CLASS="TableRowColor">
254<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
255<CODE>static&nbsp;long</CODE></FONT></TD>
256<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#getTaskLogLength(org.apache.hadoop.mapred.JobConf)">getTaskLogLength</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A>&nbsp;conf)</CODE>
257
258<BR>
259&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the desired maximum length of task's logs.</TD>
260</TR>
261<TR BGCOLOR="white" CLASS="TableRowColor">
262<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
263<CODE>static&nbsp;void</CODE></FONT></TD>
264<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#syncLogs(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskAttemptID)">syncLogs</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;firstTaskid,
265         <A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid)</CODE>
266
267<BR>
268&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
269</TR>
270<TR BGCOLOR="white" CLASS="TableRowColor">
271<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
272<CODE>static&nbsp;void</CODE></FONT></TD>
273<TD><CODE><B><A HREF="../../../../org/apache/hadoop/mapred/TaskLog.html#syncLogs(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskAttemptID, boolean)">syncLogs</A></B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;firstTaskid,
274         <A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid,
275         boolean&nbsp;isCleanup)</CODE>
276
277<BR>
278&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
279</TR>
280</TABLE>
281&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
282<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
283<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
284<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>
285</TR>
286<TR BGCOLOR="white" CLASS="TableRowColor">
287<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#equals(java.lang.Object)" title="class or interface in java.lang">equals</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#hashCode()" title="class or interface in java.lang">hashCode</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#toString()" title="class or interface in java.lang">toString</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>
288</TR>
289</TABLE>
290&nbsp;
291<P>
292
293<!-- ========= CONSTRUCTOR DETAIL ======== -->
294
295<A NAME="constructor_detail"><!-- --></A>
296<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
297<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
298<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
299<B>Constructor Detail</B></FONT></TH>
300</TR>
301</TABLE>
302
303<A NAME="TaskLog()"><!-- --></A><H3>
304TaskLog</H3>
305<PRE>
306public <B>TaskLog</B>()</PRE>
307<DL>
308</DL>
309
310<!-- ============ METHOD DETAIL ========== -->
311
312<A NAME="method_detail"><!-- --></A>
313<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
314<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
315<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
316<B>Method Detail</B></FONT></TH>
317</TR>
318</TABLE>
319
320<A NAME="getTaskLogFile(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskLog.LogName)"><!-- --></A><H3>
321getTaskLogFile</H3>
322<PRE>
323public static <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A> <B>getTaskLogFile</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid,
324                                  <A HREF="../../../../org/apache/hadoop/mapred/TaskLog.LogName.html" title="enum in org.apache.hadoop.mapred">TaskLog.LogName</A>&nbsp;filter)</PRE>
325<DL>
326<DD><DL>
327</DL>
328</DD>
329</DL>
330<HR>
331
332<A NAME="getRealTaskLogFileLocation(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskLog.LogName)"><!-- --></A><H3>
333getRealTaskLogFileLocation</H3>
334<PRE>
335public static <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A> <B>getRealTaskLogFileLocation</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid,
336                                              <A HREF="../../../../org/apache/hadoop/mapred/TaskLog.LogName.html" title="enum in org.apache.hadoop.mapred">TaskLog.LogName</A>&nbsp;filter)</PRE>
337<DL>
338<DD><DL>
339</DL>
340</DD>
341</DL>
342<HR>
343
344<A NAME="getIndexFile(java.lang.String)"><!-- --></A><H3>
345getIndexFile</H3>
346<PRE>
347public static <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A> <B>getIndexFile</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;taskid)</PRE>
348<DL>
349<DD><DL>
350</DL>
351</DD>
352</DL>
353<HR>
354
355<A NAME="getIndexFile(java.lang.String, boolean)"><!-- --></A><H3>
356getIndexFile</H3>
357<PRE>
358public static <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A> <B>getIndexFile</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;taskid,
359                                boolean&nbsp;isCleanup)</PRE>
360<DL>
361<DD><DL>
362</DL>
363</DD>
364</DL>
365<HR>
366
367<A NAME="syncLogs(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskAttemptID)"><!-- --></A><H3>
368syncLogs</H3>
369<PRE>
370public static void <B>syncLogs</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;firstTaskid,
371                            <A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid)
372                     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>
373<DL>
374<DD><DL>
375
376<DT><B>Throws:</B>
377<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>
378</DD>
379</DL>
380<HR>
381
382<A NAME="syncLogs(org.apache.hadoop.mapred.TaskAttemptID, org.apache.hadoop.mapred.TaskAttemptID, boolean)"><!-- --></A><H3>
383syncLogs</H3>
384<PRE>
385public static void <B>syncLogs</B>(<A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;firstTaskid,
386                            <A HREF="../../../../org/apache/hadoop/mapred/TaskAttemptID.html" title="class in org.apache.hadoop.mapred">TaskAttemptID</A>&nbsp;taskid,
387                            boolean&nbsp;isCleanup)
388                     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>
389<DL>
390<DD><DL>
391
392<DT><B>Throws:</B>
393<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>
394</DD>
395</DL>
396<HR>
397
398<A NAME="cleanup(int)"><!-- --></A><H3>
399cleanup</H3>
400<PRE>
401public static void <B>cleanup</B>(int&nbsp;logsRetainHours)
402                    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>
403<DL>
404<DD>Purge old user logs.
405<P>
406<DD><DL>
407
408<DT><B>Throws:</B>
409<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>
410</DD>
411</DL>
412<HR>
413
414<A NAME="getTaskLogLength(org.apache.hadoop.mapred.JobConf)"><!-- --></A><H3>
415getTaskLogLength</H3>
416<PRE>
417public static long <B>getTaskLogLength</B>(<A HREF="../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A>&nbsp;conf)</PRE>
418<DL>
419<DD>Get the desired maximum length of task's logs.
420<P>
421<DD><DL>
422<DT><B>Parameters:</B><DD><CODE>conf</CODE> - the job to look in
423<DT><B>Returns:</B><DD>the number of bytes to cap the log files at</DL>
424</DD>
425</DL>
426<HR>
427
428<A NAME="captureOutAndError(java.util.List, java.io.File, java.io.File, long)"><!-- --></A><H3>
429captureOutAndError</H3>
430<PRE>
431public static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt; <B>captureOutAndError</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
432                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stdoutFilename,
433                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stderrFilename,
434                                              long&nbsp;tailLength)
435                                       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>
436<DL>
437<DD>Wrap a command in a shell to capture stdout and stderr to files.
438 If the tailLength is 0, the entire output will be saved.
439<P>
440<DD><DL>
441<DT><B>Parameters:</B><DD><CODE>cmd</CODE> - The command and the arguments that should be run<DD><CODE>stdoutFilename</CODE> - The filename that stdout should be saved to<DD><CODE>stderrFilename</CODE> - The filename that stderr should be saved to<DD><CODE>tailLength</CODE> - The length of the tail to be saved.
442<DT><B>Returns:</B><DD>the modified command that should be run
443<DT><B>Throws:</B>
444<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>
445</DD>
446</DL>
447<HR>
448
449<A NAME="captureOutAndError(java.util.List, java.util.List, java.io.File, java.io.File, long)"><!-- --></A><H3>
450captureOutAndError</H3>
451<PRE>
452public static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt; <B>captureOutAndError</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;setup,
453                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
454                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stdoutFilename,
455                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stderrFilename,
456                                              long&nbsp;tailLength)
457                                       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>
458<DL>
459<DD>Wrap a command in a shell to capture stdout and stderr to files.
460 Setup commands such as setting memory limit can be passed which
461 will be executed before exec.
462 If the tailLength is 0, the entire output will be saved.
463<P>
464<DD><DL>
465<DT><B>Parameters:</B><DD><CODE>setup</CODE> - The setup commands for the execed process.<DD><CODE>cmd</CODE> - The command and the arguments that should be run<DD><CODE>stdoutFilename</CODE> - The filename that stdout should be saved to<DD><CODE>stderrFilename</CODE> - The filename that stderr should be saved to<DD><CODE>tailLength</CODE> - The length of the tail to be saved.
466<DT><B>Returns:</B><DD>the modified command that should be run
467<DT><B>Throws:</B>
468<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>
469</DD>
470</DL>
471<HR>
472
473<A NAME="captureOutAndError(java.util.List, java.util.List, java.io.File, java.io.File, long, java.lang.String)"><!-- --></A><H3>
474captureOutAndError</H3>
475<PRE>
476public static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt; <B>captureOutAndError</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;setup,
477                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
478                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stdoutFilename,
479                                              <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;stderrFilename,
480                                              long&nbsp;tailLength,
481                                              <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;pidFileName)
482                                       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>
483<DL>
484<DD>Wrap a command in a shell to capture stdout and stderr to files.
485 Setup commands such as setting memory limit can be passed which
486 will be executed before exec.
487 If the tailLength is 0, the entire output will be saved.
488<P>
489<DD><DL>
490<DT><B>Parameters:</B><DD><CODE>setup</CODE> - The setup commands for the execed process.<DD><CODE>cmd</CODE> - The command and the arguments that should be run<DD><CODE>stdoutFilename</CODE> - The filename that stdout should be saved to<DD><CODE>stderrFilename</CODE> - The filename that stderr should be saved to<DD><CODE>tailLength</CODE> - The length of the tail to be saved.<DD><CODE>pidFileName</CODE> - The name of the pid-file
491<DT><B>Returns:</B><DD>the modified command that should be run
492<DT><B>Throws:</B>
493<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>
494</DD>
495</DL>
496<HR>
497
498<A NAME="addCommand(java.util.List, boolean)"><!-- --></A><H3>
499addCommand</H3>
500<PRE>
501public 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>addCommand</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
502                                boolean&nbsp;isExecutable)
503                         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>
504<DL>
505<DD>Add quotes to each of the command strings and
506 return as a single string
507<P>
508<DD><DL>
509<DT><B>Parameters:</B><DD><CODE>cmd</CODE> - The command to be quoted<DD><CODE>isExecutable</CODE> - makes shell path if the first
510 argument is executable
511<DT><B>Returns:</B><DD>returns The quoted string.
512<DT><B>Throws:</B>
513<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>
514</DD>
515</DL>
516<HR>
517
518<A NAME="captureDebugOut(java.util.List, java.io.File)"><!-- --></A><H3>
519captureDebugOut</H3>
520<PRE>
521public static <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt; <B>captureDebugOut</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<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>&gt;&nbsp;cmd,
522                                           <A HREF="http://java.sun.com/javase/6/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</A>&nbsp;debugoutFilename)
523                                    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>
524<DL>
525<DD>Wrap a command in a shell to capture debug script's
526 stdout and stderr to debugout.
527<P>
528<DD><DL>
529<DT><B>Parameters:</B><DD><CODE>cmd</CODE> - The command and the arguments that should be run<DD><CODE>debugoutFilename</CODE> - The filename that stdout and stderr
530  should be saved to.
531<DT><B>Returns:</B><DD>the modified command that should be run
532<DT><B>Throws:</B>
533<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>
534</DD>
535</DL>
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