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https://issues.apache.org/jira/browse/PIG-1492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12888952#action_12888952
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Hadoop QA commented on PIG-1492:
--------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12449531/PIG-1492.1.patch
against trunk revision 964182.
+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 passed 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/370/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/370/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/370/console
This message is automatically generated.
> DefaultTuple and DefaultMemory understimate their memory footprint
> ------------------------------------------------------------------
>
> Key: PIG-1492
> URL: https://issues.apache.org/jira/browse/PIG-1492
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.8.0
> Reporter: Thejas M Nair
> Assignee: Thejas M Nair
> Fix For: 0.8.0
>
> Attachments: PIG-1492.1.patch
>
>
> There are several places where we highly underestimate the memory footprint .
> For example, for map datatypes, we don't account for the per entry cost for
> the map container data structures. The estimated size of a tuple having map
> with 100 integer key-value entries , as per current version of code is 3260
> bytes, while what is observed is around 6775 bytes . To verify the memory
> footprint, i checked free memory before and after creating multiple instances
> of the object , using code on the lines of
> http://www.javaspecialists.eu/archive/Issue029.html .
> In PIG-1443 similar change was done to fix this for CHARARRAY .
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