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POEOFException due to permission issue in Pig MR job
 

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  1. POEOFException due to permission issue in Pig MR job
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    <p>I am seeing the following exception in my Map reduce job running on my local hadoop cluster of 80 nodes. This stack trace doesn’t point to my code and I suppose it might be related to some permission issue. One interesting thing is that the job is failing like this if I run it as system account. If I run it as myself the job runs just fine.</p> <pre><code>java.lang.RuntimeException: java.io.EOFException at org.apache.hadoop.io.WritableComparator.compare(WritableComparator.java:103) at org.apache.hadoop.mapreduce.ReduceContext.nextKeyValue(ReduceContext.java:120) at org.apache.hadoop.mapreduce.ReduceContext.nextKey(ReduceContext.java:92) at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:175) at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:649) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:417) at org.apache.hadoop.mapred.Child$4.run(Child.java:255) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1093) at org.apache.hadoop.mapred.Child.main(Child.java:249) Caused by: java.io.EOFException at java.io.DataInputStream.readByte(DataInputStream.java:250) at org.apache.pig.impl.io.PigNullableWritable.readFields(PigNullableWritable.java:115) at org.apache.hadoop.io.WritableComparator.compare(WritableComparator.java:100) ... 10 more </code></pre> <p>Any help here is appreciated. Let me know if you need any more information.</p>
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    1. USshaurya
    1. USshaurya
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COWhat are the permissions on the directory you are attempting to `STORE` the output in?
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      1. POEOFException due to permission issue in Pig MR job
      1. USreo katoa
    2. CO@shaurya It seems to me that there might be some deserialization issue. First I'd check whether the failing user doesn't use another Hadoop/Pig configuration/version.
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      1. POEOFException due to permission issue in Pig MR job
      1. USLorand Bendig
    3. COThanks Lorand. That seems to be the case and fixed the issue.
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      1. USshaurya
 

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