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From "stack@archive.org (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-219) SequenceFile#handleChecksumException NPE
Date Mon, 15 May 2006 18:21:06 GMT
SequenceFile#handleChecksumException NPE
----------------------------------------

         Key: HADOOP-219
         URL: http://issues.apache.org/jira/browse/HADOOP-219
     Project: Hadoop
        Type: Bug

  Components: io  
    Reporter: stack@archive.org
    Priority: Trivial


The SequenceFile#handleChecksumException assumes the conf data member has been set.  It will
not be set if we use the 'Reader(FileSystem fs, Path file, int bufferSize, long start, long
length)' constructor.  The latter is used by ReduceTask Sorter:


java.lang.NullPointerException
	at org.apache.hadoop.io.SequenceFile$Reader.handleChecksumException(SequenceFile.java:407)
	at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:400)
	at org.apache.hadoop.io.SequenceFile$Sorter$MergeStream.next(SequenceFile.java:837)
	at org.apache.hadoop.io.SequenceFile$Sorter$MergeQueue.merge(SequenceFile.java:881)
	at org.apache.hadoop.io.SequenceFile$Sorter$MergePass.run(SequenceFile.java:766)
	at org.apache.hadoop.io.SequenceFile$Sorter.mergePass(SequenceFile.java:702)
	at org.apache.hadoop.io.SequenceFile$Sorter.sort(SequenceFile.java:528)
	at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:253)
	at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:787)


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