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MapReduce >> mail # user >> FAILED EMFILE: Too many open files

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FAILED EMFILE: Too many open files
While i am trying to run a MR Job I am getting
" FAILED EMFILE: Too many open files "
 at org.apache.hadoop.io.nativeio.NativeIO.open(Native Method)
at org.apache.hadoop.io.SecureIOUtils.createForWrite(SecureIOUtils.java:172)
 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.mapred.Child.main(Child.java:262)

Why is it so?

*Thanks & Regards*

Unmesha Sreeveni U.B
Junior Developer

Akira AJISAKA 2014-01-07, 09:09