Hi All, I have a mapreduce streaming job which is failing with "subprocess failed with code 255" at org.apache.hadoop.streaming.PipeMapRed.waitOutputThreads(PipeMapRed.java:322) at org.apache.hadoop.streaming.PipeMapRed.mapRedFinished(PipeMapRed.java:535) at org.apache.hadoop.streaming.PipeMapper.close(PipeMapper.java:130) at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61) at org.apache.hadoop.streaming.PipeMapRunner.run(PipeMapRunner.java:34) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164) 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:1657) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) I am running Hadoop 2.7.1 on a HortonWorks HDP for Windows cluster. I am able to run wordcount sample fine. So, to diagnose the error I wanted to find where the problem is and want to run IsolationRunner on job.xml of failed job. But when I try to run hadoop org.apache.hadoop.mapred.IsolationRunner hdfs://HADOOP-MASTER:8020/user/hadoop/.staging/job_1449145495588_0004/job.xml I am getting the following error: Error: Could not find or load main class org.apache.hadoop.mapred.IsolationRunner I cannot find IsolationRunner in any Jar file on the entire machine. Is IsolationRunner not available to 2.7.1? If not, what is the alternative? Thanks
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