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Posted to dev@pig.apache.org by "Dmitriy V. Ryaboy (JIRA)" <ji...@apache.org> on 2014/01/30 22:38:20 UTC
[jira] [Commented] (PIG-3456) Reduce threadlocal conf access in
backend for each record
[ https://issues.apache.org/jira/browse/PIG-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887098#comment-13887098 ]
Dmitriy V. Ryaboy commented on PIG-3456:
----------------------------------------
Could you post a patch without the whitespace changes (for ease of review) and some microbenchmark results?
I had some microbenchmark code in PIG-3325, that might help bootstrap you here.
> Reduce threadlocal conf access in backend for each record
> ---------------------------------------------------------
>
> Key: PIG-3456
> URL: https://issues.apache.org/jira/browse/PIG-3456
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.11.1
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.13.0
>
> Attachments: PIG-3456-1.patch
>
>
> Noticed few things while browsing code
> 1) DefaultTuple has a protected boolean isNull = false; which is never used. Removing this gives ~3-5% improvement for big jobs
> 2) Config checking with ThreadLocal conf is repeatedly done for each record. For eg: createDataBag in POCombinerPackage. But initialized only for first time in other places like POPackage, POJoinPackage, etc.
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