[
https://issues.apache.org/jira/browse/HADOOP-2735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12565757#action_12565757
]
Koji Noguchi commented on HADOOP-2735:
--------------------------------------
Thanks Amareshwari!
Even though I created this ticket, I don't know what should be done...
The problem I'm having is,
- heapsize is sometimes set by users
- tmp is set by ops/admins
And when users set the heapsize, this tmp entry would be overwritten.
Also, on Windows, I'm not sure which tmp to set.
May I ask adding new conf entry?
<name>mapred.child.java.tmp</name>
And if <mapred.child.java.tmp> is set,
1) Append -Djava.io.tmpdir=<mapred.child.java.tmp>
2) If mapred.child.java.tmp doesn't exist, create one.
> 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 Sri Ramadasu
> Priority: Critical
> Fix For: 0.16.1
>
> Attachments: 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
