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Posted to dev@pig.apache.org by "Rohini Palaniswamy (JIRA)" <ji...@apache.org> on 2015/06/16 09:23:00 UTC

[jira] [Updated] (PIG-4574) Eliminate identity vertex for order by and skewed join right after LOAD

     [ https://issues.apache.org/jira/browse/PIG-4574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rohini Palaniswamy updated PIG-4574:
------------------------------------
    Assignee: Rohini Palaniswamy
      Status: Patch Available  (was: Open)

> Eliminate identity vertex for order by and skewed join right after LOAD
> -----------------------------------------------------------------------
>
>                 Key: PIG-4574
>                 URL: https://issues.apache.org/jira/browse/PIG-4574
>             Project: Pig
>          Issue Type: Sub-task
>          Components: tez
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.16.0
>
>         Attachments: PIG-4574-1.patch
>
>
> If ORDER BY or SKEWED JOIN is the operator immediately following LOAD+FOREACH without any FILTER, then data should be read again from HDFS for the partitioner vertex instead of writing to a identity vertex and reading from it.



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