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Posted to common-dev@hadoop.apache.org by "Marco Nicosia (JIRA)" <ji...@apache.org> on 2008/03/07 02:56:58 UTC
[jira] Commented: (HADOOP-2735) Setting default tmp directory for
java createTempFile (java.io.tmpdir)
[ https://issues.apache.org/jira/browse/HADOOP-2735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12576010#action_12576010 ]
Marco Nicosia commented on HADOOP-2735:
---------------------------------------
Any consideration for Allen's comment?
aw> Although, it might be worthwhile setting the shell TMPDIR
aw> environment variable so that other languages have something
aw> they could use as well.
> Setting default tmp directory for java createTempFile (java.io.tmpdir)
> ----------------------------------------------------------------------
>
> Key: HADOOP-2735
> URL: https://issues.apache.org/jira/browse/HADOOP-2735
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Koji Noguchi
> Assignee: Amareshwari Sriramadasu
> Priority: Critical
> Fix For: 0.16.1
>
> Attachments: patch-2735.txt, patch-2735.txt, patch-2735.txt, patch-2735.txt, patch-2735.txt, patch-2735.txt, patch-2735.txt
>
>
> On our cluster, we've seen Pig(http://incubator.apache.org/pig/) filling up the /tmp and failing.
> (also inefficient since all the local tasks were spilling to the same disk)
> Pig is simply using java api createTempFile,
> http://java.sun.com/j2se/1.5.0/docs/api/java/io/File.html#createTempFile(java.lang.String,%20java.lang.String,%20java.io.File
> Can we add -Djava.io.tmpdir="./tmp" somewhere ?
> so that,
> 1) Tasks can utilize all disks when using tmp
> 2) Any undeleted tmp files will be deleted by the tasktracker when task(job?) is done.
> The easiest way is to set it inside mapred.child.java.opts in the config, but this can be overwritten if the users set their own task heapsize.
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