[jira] [Commented] (HIVE-10978) Document fs.trash.interval wrt Hive and HDFS Encryption

["Sushanth Sowmyan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-10978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14590769#comment-14590769 ] 

Sushanth Sowmyan commented on HIVE-10978:
-----------------------------------------

Eugene, the default process for the RELEASE_NOTES.txt is to simply mark this jira as resolved with the appropriate version number, and it will include it in the RELEASE_NOTES.txt when that's generated as part of the release process.

So, this bug can simply be marked as resolved, with fix version as 1.2.1. Right?

Is there any further documentation needed for this bug? If so, we should have a TODOC label on this page, and/or you can add it to any necessary area of the wiki yourself.

> Document fs.trash.interval wrt Hive and HDFS Encryption
> -------------------------------------------------------
>
>                 Key: HIVE-10978
>                 URL: https://issues.apache.org/jira/browse/HIVE-10978
>             Project: Hive
>          Issue Type: Bug
>          Components: Documentation, Security
>    Affects Versions: 1.2.0
>            Reporter: Eugene Koifman
>            Priority: Critical
>
> This should be documented in 1.2.1 Release Notes
> When HDFS is encrypted (TDE is enabled), DROP TABLE and DROP PARTITION have unexpected behavior when Hadoop Trash feature is enabled.
> The later is enabled by setting fs.trash.interval > 0 in core-site.xml.
> When Trash is enabled, the data file for the table, should be "moved" to Trash bin. If the table is inside an Encryption Zone, this "move" operation is not allowed.
> There are 2 ways to deal with this:
> 1. use PURGE, as in DROP TABLE blah PURGE. This skips the Trash bin even if enabled.
> 2. set fs.trash.interval = 0. It is critical that this config change is done in core-site.xml. Setting it in hive-site.xml may lead to very strange behavior where the table metadata is deleted but the data file remains.  This will lead to data corruption if a table with the same name is later created.



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