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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1098) [zebra] Zebra Performance Optimizations
Date Wed, 02 Dec 2009 00:32:20 GMT

    [ https://issues.apache.org/jira/browse/PIG-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784565#action_12784565
] 

Alan Gates commented on PIG-1098:
---------------------------------

Committed patch to 0.6 branch as well.

> [zebra] Zebra Performance Optimizations
> ---------------------------------------
>
>                 Key: PIG-1098
>                 URL: https://issues.apache.org/jira/browse/PIG-1098
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Yan Zhou
>            Assignee: Yan Zhou
>            Priority: Minor
>             Fix For: 0.6.0, 0.7.0
>
>         Attachments: PIG-1098.patch
>
>
> Many in-core performance optimization opportunities exist in zebra, such as removal of
redundant precautionary checks, use of better collection types to reduce levels of indirection
to the memory objects, changing of input splits in ascending sizes to descending sizes. Observed
improvements of wall clock time of some PIG LOAD queries are around 10%.

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