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From "Reinis Vicups (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5876) SequenceFileRecordReader NPE if close() is called before initialize()
Date Mon, 05 May 2014 12:23:16 GMT
Reinis Vicups created MAPREDUCE-5876:
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             Summary: SequenceFileRecordReader NPE if close() is called before initialize()
                 Key: MAPREDUCE-5876
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5876
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: client
    Affects Versions: 2.3.0
            Reporter: Reinis Vicups


org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader extends org.apache.hadoop.mapreduce.RecordReader
which in turn implements java.io.Closeable.

According to java spec the java.io.Closeable#close() has to be idempotent (http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html)
which is not.

An NPE is being thrown if close() method is invoked without previously calling initialize()
method. This happens because SequenceFile.Reader in is null.



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