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https://issues.apache.org/jira/browse/PIG-1241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12834635#action_12834635
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Hadoop QA commented on PIG-1241:
--------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12436056/accum.patch
against trunk revision 909921.
+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-h8.grid.sp2.yahoo.net/212/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/212/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/212/console
This message is automatically generated.
> Accumulator is turned on when a map is used with a non-accumulative UDF
> -----------------------------------------------------------------------
>
> Key: PIG-1241
> URL: https://issues.apache.org/jira/browse/PIG-1241
> Project: Pig
> Issue Type: Bug
> Reporter: Ying He
> Attachments: accum.patch
>
>
> Exception is thrown for a script like the following:
> register /homes/yinghe/owl/string.jar;
> a = load 'a.txt' as (id, url);
> b = group a by (id, url);
> c = foreach b generate COUNT(a), (CHARARRAY)
> string.URLPARSE(group.url)#'url';
> dump c;
> In this query, URLPARSE() is not accumulative, and it returns a map.
> The accumulator optimizer failed to check UDF in this case, and tries to run
> the job in accumulative mode. ClassCastException is thrown when trying to
> cast UDF into Accumulator interface.
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