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https://issues.apache.org/jira/browse/PIG-1342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860035#action_12860035
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Hadoop QA commented on PIG-1342:
--------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12442480/PIG-1342.patch
against trunk revision 936395.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 6 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/299/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/299/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/299/console
This message is automatically generated.
> [Zebra] Avoid making unnecessary name node calls for writes in Zebra
> --------------------------------------------------------------------
>
> Key: PIG-1342
> URL: https://issues.apache.org/jira/browse/PIG-1342
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.6.0, 0.7.0
> Reporter: Chao Wang
> Assignee: Chao Wang
> Fix For: 0.8.0
>
> Attachments: PIG-1342.patch, PIG-1342.patch
>
>
> Currently, table and column group level meta data is extracted from job
> configuration object and written onto HDFS disk within checkOutputSpec().
> Later on, writers at back end will open these files to access the meta data
> for doing writes. This puts extra load to name node since all writers need to
> make name node calls to open files.
> We propose the following approach to this problem:
> For writers at back end, they extract meta information from job configuration
> object directly, rather than making name node calls and going to HDFS disk to
> fetch the information.
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