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Error=11 resource temporarily unavailable
Hi team
I am getting this strange error below is the trace
2013-11-27 19:01:50,678 WARN org.apache.hadoop.util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable2013-11-27 19:01:51,051 WARN mapreduce.Counters: Group org.apache.hadoop.mapred.Task$Counter is deprecated. Use org.apache.hadoop.mapreduce.TaskCounter instead2013-11-27 19:01:51,539 WARN org.apache.hadoop.conf.Configuration: session.id is deprecated. Instead, use dfs.metrics.session-id2013-11-27 19:01:51,540 INFO org.apache.hadoop.metrics.jvm.JvmMetrics: Initializing JVM Metrics with processName=MAP, sessionId=2013-11-27 19:01:51,867 INFO org.apache.hadoop.util.ProcessTree: setsid exited with exit code 02013-11-27 19:01:51,870 INFO org.apache.hadoop.mapred.Task:  Using ResourceCalculatorPlugin :org.apache.hadoop.util.LinuxResourceCalculatorPlugin@4a0bd13d2013-11-27 19:01:52,217 INFO org.apache.hadoop.mapred.MapTask: Processing split:org.apache.hadoop.examples.terasort.TeraGen$RangeInputFormat$RangeInputSplit@6c30aec72013-11-27 19:01:52,222 WARN mapreduce.Counters: Counter name MAP_INPUT_BYTES is deprecated. Use FileInputFormatCounters as group name and  BYTES_READ as counter name instead2013-11-27 19:01:52,226 INFO org.apache.hadoop.mapred.MapTask: numReduceTasks: 02013-11-27 19:01:52,250 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:hadoop (auth:SIMPLE) cause:java.io.IOException: Cannot run program "chmod": error=11, Resource temporarily unavailable2013-11-27 19:01:52,250 WARN org.apache.hadoop.mapred.Child: Error running childjava.io.IOException: Cannot run program "chmod": error=11, Resource temporarily unavailable        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1041)        at org.apache.hadoop.util.Shell.runCommand(Shell.java:206)        at org.apache.hadoop.util.Shell.run(Shell.java:188)        at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:381)        at org.apache.hadoop.util.Shell.execCommand(Shell.java:467)        at org.apache.hadoop.util.Shell.execCommand(Shell.java:450)        at org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.java:593)        at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:584)        at org.apache.hadoop.io.SecureIOUtils.insecureCreateForWrite(SecureIOUtils.java:146)        at org.apache.hadoop.io.SecureIOUtils.createForWrite(SecureIOUtils.java:168)        at org.apache.hadoop.mapred.TaskLog.writeToIndexFile(TaskLog.java:310)        at org.apache.hadoop.mapred.TaskLog.syncLogs(TaskLog.java:383)        at org.apache.hadoop.mapred.Child$4.run(Child.java:270)        at java.security.AccessController.doPrivileged(Native Method)        at javax.security.auth.Subject.doAs(Subject.java:415)        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)        at org.apache.hadoop.mapred.Child.main(Child.java:262)Caused by: java.io.IOException: error=11, Resource temporarily unavailable        at java.lang.UNIXProcess.forkAndExec(Native Method)        at java.lang.UNIXProcess.<init>(UNIXProcess.java:135)        at java.lang.ProcessImpl.start(ProcessImpl.java:130)        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1022)        ... 16 more2013-11-27 19:01:52,256 INFO org.apache.hadoop.mapred.Task: Runnning cleanup for the task

I have set map slots to 24 and reduce to 12 on 32 core machine ( on HT )
ulimit is 64K
what is causing it and how can we get rid of it. Its happening only for bigger jobs say terasort
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Cheers !!!

Siddharth Tiwari

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"Every duty is holy, and devotion to duty is the highest form of worship of God.”

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