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From "Richard Ding (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1218) Use distributed cache to store samples
Date Wed, 10 Feb 2010 23:20:31 GMT

     [ https://issues.apache.org/jira/browse/PIG-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Richard Ding updated PIG-1218:
------------------------------

    Status: Patch Available  (was: Open)

> Use distributed cache to store samples
> --------------------------------------
>
>                 Key: PIG-1218
>                 URL: https://issues.apache.org/jira/browse/PIG-1218
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Olga Natkovich
>            Assignee: Richard Ding
>             Fix For: 0.7.0
>
>         Attachments: PIG-1218.patch
>
>
> Currently, in the case of skew join and order by we use sample that is just written to
the dfs (not distributed cache) and, as the result, get opened and copied around more than
necessary. This impacts query performance and also places unnecesary load on the name node

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