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Intermittent Could not create FileClient

Question asked by jerdavis on Dec 12, 2013
Latest reply on Dec 16, 2013 by jerdavis
Hello,
I'm getting this FileClient error very intermittently, and I'm not sure where to look to resolve the issue.
Many Jobs spread across the entire cluster will work just fine, but without warning (and under only moderate load) a Random  Job will fail with this exception.
MapR Version 3.0.2.22510

2013-12-12 03:53:41,048 WARN org.apache.hadoop.mapred.Child: Error running child
java.io.IOException: Could not create FileClient
        at com.mapr.fs.MapRFileSystem.lookupClient(MapRFileSystem.java:351)
        at com.mapr.fs.MapRFileSystem.lookupClient(MapRFileSystem.java:363)
        at com.mapr.fs.MapRFileSystem.open(MapRFileSystem.java:494)
        at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:463)
        at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:358)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:390)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:349)
        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:1127)
        at org.apache.hadoop.mapred.Child.main(Child.java:264)

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