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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3103) [HOD] Hadoop.tmp.dir should not be set to cluster directory
Date Fri, 28 Mar 2008 04:20:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12582900#action_12582900

Vinod Kumar Vavilapalli commented on HADOOP-3103:

Console output shows that javadoc warnings are related to src/java/org/apache/hadoop/net/SocketInputStream.java:137
and src/java/org/apache/hadoop/net/SocketOutputStream.java:132. There appear to be two javadoc
warnings thus, but the final results report only one (??).

In any case, the warnings are not pertinent to this patch. Patch is committable.

> [HOD] Hadoop.tmp.dir should not be set to cluster directory
> -----------------------------------------------------------
>                 Key: HADOOP-3103
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3103
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/hod
>    Affects Versions: 0.16.0
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Blocker
>             Fix For: 0.16.2
>         Attachments: HADOOP-3103, HADOOP-3103.1.for.16, HADOOP-3103.1.for.17, HADOOP-3103.for.16,
> Currently HOD generates  hadoop.tmp.dir pointing to the cluster directory(hod.clusterdir),
which users typically create in their home directories. This hadoop.tmp.dir is used on the
client side when a jar is run(org/apache/hadoop/util/RunJar.java). The user home directories
might be NFS mounted in some environments, which might result in a hit, for example when running
a jar.
> So, HOD *should not* generate hadoop.tmp.dir pointing to cluster directory. Instead,
it should use hod.temp-dir, which *is* the location that dfs.client.buffer.dir uses to alleviate
any such NFS hit problems. Further, though currently hadoop.tmp.dir is not used on hadoop
daemons side, it would be good if HOD generates it on daemons side too, and thus preclude
any related problems in future.

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