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From "Rohini Palaniswamy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-2672) Optimize the use of DistributedCache
Date Thu, 26 Sep 2013 21:16:03 GMT

    [ https://issues.apache.org/jira/browse/PIG-2672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13779247#comment-13779247
] 

Rohini Palaniswamy commented on PIG-2672:
-----------------------------------------

bq. can you point me to the line number? If its outside of pig, we can do the same even now.
   job.jar, job.xml, etc are copied to /user/<username>/.staging by JobClient. Refer
to my previous comment for the source code reference in hadoop.
                
> Optimize the use of DistributedCache
> ------------------------------------
>
>                 Key: PIG-2672
>                 URL: https://issues.apache.org/jira/browse/PIG-2672
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Rohini Palaniswamy
>             Fix For: 0.12.0
>
>         Attachments: PIG-2672.patch
>
>
> Pig currently copies jar files to a temporary location in hdfs and then adds them to
DistributedCache for each job launched. This is inefficient in terms of 
>    * Space - The jars are distributed to task trackers for every job taking up lot of
local temporary space in tasktrackers.
>    * Performance - The jar distribution impacts the job launch time.  

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