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From "stack@archive.org (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-219) SequenceFile#handleChecksumException NPE
Date Mon, 15 May 2006 18:23:06 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-219?page=all ]

stack@archive.org updated HADOOP-219:
-------------------------------------

    Attachment: hadoop-219.patch

If no conf, default to throwing the checksum error.

> 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
>  Attachments: hadoop-219.patch
>
> 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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