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https://issues.apache.org/jira/browse/PIG-2672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13263946#comment-13263946
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Rohini Palaniswamy commented on PIG-2672:
-----------------------------------------
Yes. Pig also currently does DistributedCache.addFileToClassPath(or tmpfiles in
jobconf). It should be DistributedCache.addArchiveToClassPath (or tmpjars in
jobconf) instead.
I have not seen unjar happening when you do
DistributedCache.addArchiveToClassPath.
> 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
>
> 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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