hadoop-pig-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1513) Pig doesn't handle empty input directory
Date Thu, 29 Jul 2010 00:06:17 GMT

    [ https://issues.apache.org/jira/browse/PIG-1513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12893433#action_12893433
] 

Hadoop QA commented on PIG-1513:
--------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12450727/PIG-1513.patch
  against trunk revision 979918.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 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 failed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/383/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/383/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/383/console

This message is automatically generated.

> Pig doesn't handle empty input directory
> ----------------------------------------
>
>                 Key: PIG-1513
>                 URL: https://issues.apache.org/jira/browse/PIG-1513
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Richard Ding
>            Assignee: Richard Ding
>             Fix For: 0.8.0
>
>         Attachments: PIG-1513.patch
>
>
> The following script
> {code}
> A = load 'input';
> B = load 'emptydir';
> C = join B by $0, A by $0 using 'skewed';
> store C into 'output';
> {code}
> fails with "ERROR: java.lang.RuntimeException: Empty samples file';
> In this case, the sample job has 0 maps.  Pig doesn't expect this and fails . 
> For merge join the script
> The merge join script
> {code}
> A = load 'input';
> B = load 'emptydir';
> C = join A by $0, B by $0 using 'merge';
> store C into 'output';
> {code}
> the sample job again has 0 maps and the script  fails with " ERROR 2176: Error processing
right input during merge join".
> But if we change the join order: 
> {code}
> A = load 'input';
> B = load 'emptydir';
> C = join B by $0, A by $0 using 'merge';
> store C into 'output';
> {code}
> The second job (merge) now has 0 maps and 0 reduces. And it generates an empty 'output'
directory.
> Order by on empty directory works fine and generates empty part files.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message