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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2014/10/27 08:32:34 UTC

[jira] [Commented] (HIVE-8458) Potential null dereference in Utilities#clearWork()

    [ https://issues.apache.org/jira/browse/HIVE-8458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14184910#comment-14184910 ] 

Navis commented on HIVE-8458:
-----------------------------

"&&" part looks right. You can fix this by checking null prior to do something with mapPath and reducePath.

> Potential null dereference in Utilities#clearWork()
> ---------------------------------------------------
>
>                 Key: HIVE-8458
>                 URL: https://issues.apache.org/jira/browse/HIVE-8458
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.13.1
>            Reporter: Ted Yu
>            Priority: Minor
>         Attachments: HIVE-8458_001.patch
>
>
> {code}
>     Path mapPath = getPlanPath(conf, MAP_PLAN_NAME);
>     Path reducePath = getPlanPath(conf, REDUCE_PLAN_NAME);
>     // if the plan path hasn't been initialized just return, nothing to clean.
>     if (mapPath == null && reducePath == null) {
>       return;
>     }
>     try {
>       FileSystem fs = mapPath.getFileSystem(conf);
> {code}
> If mapPath is null but reducePath is not null, getFileSystem() call would produce NPE



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