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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1269) [Zebra] Restrict schema definition for collection
Date Thu, 04 Mar 2010 23:17:27 GMT

    [ https://issues.apache.org/jira/browse/PIG-1269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12841601#action_12841601

Hadoop QA commented on PIG-1269:

+1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 919109.

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

    +1 tests included.  The patch appears to include 60 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

    +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/224/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/224/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/224/console

This message is automatically generated.

> [Zebra] Restrict schema definition for collection
> -------------------------------------------------
>                 Key: PIG-1269
>                 URL: https://issues.apache.org/jira/browse/PIG-1269
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Xuefu Zhang
>            Assignee: Xuefu Zhang
>             Fix For: 0.7.0
>         Attachments: patch.0304, zebra.0302
> Currently Zebra grammar for schema definition for collection field allows many types
of definition. To reduce complexity and remove ambiguity, and more importantly, to make the
meta data more representative of the actual data instances, the grammar rules need to be changed.
Only a record type is allowed and required for collection definition. Thus,  fieldName:collection(record(c1:int,
c2:string)) is legal, while fieldName:collection(c1:int, c2:string), fieldName:collection(f:record(c1:int,
c2:string)), fieldName:collection(c1:int), or feildName:collection(int) is illegal.
> This will have some impact on existing Zebra M/R programs or Pig scripts that use Zebra.
Schema acceptable in previous release now may become illegal because of this change. This
should be clearly documented.

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