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From "Koji Noguchi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-5211) Optimize Nested Limited Sort
Date Wed, 12 Apr 2017 22:23:41 GMT

     [ https://issues.apache.org/jira/browse/PIG-5211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Koji Noguchi updated PIG-5211:
------------------------------
    Attachment: pig-5211-testfix-postcommit.patch

{{TestEvalPipelineLocal}} is failing to compile after this jira.  Attaching a simple patch.

> Optimize Nested Limited Sort
> ----------------------------
>
>                 Key: PIG-5211
>                 URL: https://issues.apache.org/jira/browse/PIG-5211
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Jin Sun
>            Assignee: Jin Sun
>             Fix For: 0.17.0
>
>         Attachments: PIG-5211-1.patch, PIG-5211-2.patch, PIG-5211-3.patch, PIG-5211-4.patch,
PIG-5211-5.patch, pig-5211-testfix-postcommit.patch
>
>
> Currently in FOREACH clause, if both LIMIT and ORDER BY are present, pig stores all elements
and sort them. It should use a priority queue to be more efficient in space. 



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