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https://issues.apache.org/jira/browse/HADOOP-2943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12575973#action_12575973
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Hadoop QA commented on HADOOP-2943:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12377288/2943.patch
against trunk revision 619744.
@author +1. The patch does not contain any @author tags.
tests included +1. The patch appears to include 3 new or modified tests.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new javac compiler
warnings.
release audit +1. The applied patch does not generate any new release
audit warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests +1. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1908/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1908/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1908/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1908/console
This message is automatically generated.
> Compression for intermediate map output is broken
> -------------------------------------------------
>
> Key: HADOOP-2943
> URL: https://issues.apache.org/jira/browse/HADOOP-2943
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Chris Douglas
> Assignee: Chris Douglas
> Attachments: 2943.patch, 2943.patch, 2943.patch
>
>
> It looks like SequenceFile::RecordCompressWriter and
> SequenceFile::BlockCompressWriter weren't updated to use the new
> serialization added in HADOOP-1986. This causes failures in the merge when
> mapred.compress.map.output is true and
> mapred.map.output.compression.type=BLOCK:
> {noformat}
> java.io.IOException: File is corrupt!
> at
> org.apache.hadoop.io.SequenceFile$Reader.readBlock(SequenceFile.java:1656)
> at
> org.apache.hadoop.io.SequenceFile$Reader.nextRawKey(SequenceFile.java:1969)
> at
> org.apache.hadoop.io.SequenceFile$Sorter$SegmentDescriptor.nextRawKey(SequenceFile.java:2985)
> at
> org.apache.hadoop.io.SequenceFile$Sorter$MergeQueue.merge(SequenceFile.java:2785)
> at
> org.apache.hadoop.io.SequenceFile$Sorter.merge(SequenceFile.java:2494)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:654)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:740)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:212)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2077)
> {noformat}
> mapred.map.output.compression.type=RECORD works for Writables, but should be
> updated.
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