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Posted to dev@pig.apache.org by "Rohini Palaniswamy (JIRA)" <ji...@apache.org> on 2013/08/15 01:17:50 UTC

[jira] [Updated] (PIG-3204) Change script parsing to parse entire script instead of line by line

     [ https://issues.apache.org/jira/browse/PIG-3204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rohini Palaniswamy updated PIG-3204:
------------------------------------

    Summary: Change script parsing to parse entire script instead of line by line  (was: Reduce the number of getSchema calls during script parsing)
    
> Change script parsing to parse entire script instead of line by line
> --------------------------------------------------------------------
>
>                 Key: PIG-3204
>                 URL: https://issues.apache.org/jira/browse/PIG-3204
>             Project: Pig
>          Issue Type: Improvement
>    Affects Versions: 0.10.1
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.12
>
>         Attachments: PIG-3204-1.patch, PIG-3204-2.patch, PIG-3204-3.patch, PIG-3204-4.patch, PIG-3204-5.patch, PIG-3204-6.patch
>
>
>   Currently there are a lot of NN calls made to determine if there is a schema file for a path in a LOAD statement. When there is a slow NN(caused by whole bunch of other issues), it takes a lot of time for this and we found the scripts spending anywhere from 5 mins to 40 mins depending upon the script. It seems to be a good place for optimization. 

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