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From "Yan Zhou (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1098) [zebra] Zebra Performance Optimizations
Date Tue, 01 Dec 2009 20:43:20 GMT

     [ https://issues.apache.org/jira/browse/PIG-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yan Zhou updated PIG-1098:
--------------------------

    Description: 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%. 
(was: 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
protyped improvements are around 10% wall clock time improvements.)

> [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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