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Posted to common-dev@hadoop.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2006/09/13 19:05:23 UTC
[jira] Resolved: (HADOOP-529) SequenceFile fails task with
NullPointerException in codec initialization
[ http://issues.apache.org/jira/browse/HADOOP-529?page=all ]
Doug Cutting resolved HADOOP-529.
---------------------------------
Resolution: Fixed
I just committed this. Thanks, Owen!
> SequenceFile fails task with NullPointerException in codec initialization
> -------------------------------------------------------------------------
>
> Key: HADOOP-529
> URL: http://issues.apache.org/jira/browse/HADOOP-529
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.6.0
> Reporter: Sanjay Dahiya
> Assigned To: Owen O'Malley
> Priority: Blocker
> Fix For: 0.6.1
>
> Attachments: seq-file-codec-init.patch
>
>
> Sequence file fails in following block of code in 0.6 hadoop ( Sep 13th trunk ) -
> if (decompress) {
> valInFilter = this.codec.createInputStream(valBuffer); ---> throws NullPointerException
> this.codec is apparently not initialized in
> if (version >= CUSTOM_COMPRESS_VERSION && this.decompress) {
> try {
> this.codec = (CompressionCodec) <---- Init code.
> and is used later. It should probably check for version also before using the this.codec.
> 2006-09-13 07:37:55,010 INFO org.apache.hadoop.mapred.TaskInProgress: Error from task_0003_m_001601_0: java.lang.NullPointerException
> at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1001)
> at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:933)
> at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:924)
> at org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:37)
> at org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:53)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:175)
> at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1066)
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