[jira] [Resolved] (HIVE-23518) Tez may skip file permission update on intermediate output

["Attila Magyar (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-23518?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Attila Magyar resolved HIVE-23518.
----------------------------------
    Resolution: Invalid

Wrong Project, should have been TEZ.

> Tez may skip file permission update on intermediate output
> ----------------------------------------------------------
>
>                 Key: HIVE-23518
>                 URL: https://issues.apache.org/jira/browse/HIVE-23518
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Attila Magyar
>            Assignee: Attila Magyar
>            Priority: Major
>
> Before updating file permissions TEZ check if the permission change is needed with the following conditional:
> {code:java}
> if (!SPILL_FILE_PERMS.equals(SPILL_FILE_PERMS.applyUMask(FsPermission.getUMask(conf)))) {
>   rfs.setPermission(filename, SPILL_FILE_PERMS);
> } {code}
> If the config object is changing in the background then setPermission() call will be skipped.
> The rfs file system is always a local file system so there is no need to do this check beforehand (it doesn't generate an additional NameNode call).
> {code:java}
> rfs = ((LocalFileSystem)FileSystem.getLocal(this.conf)).getRaw(); {code}
>  We can remove the if statement and do the permission change unconditionally.



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