[jira] [Resolved] (SPARK-16119) Support "DROP TABLE ... PURGE" if Hive client supports it

["Marcelo Vanzin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-16119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcelo Vanzin resolved SPARK-16119.
------------------------------------
       Resolution: Fixed
         Assignee: Marcelo Vanzin
    Fix Version/s: 2.1.0

> Support "DROP TABLE ... PURGE" if Hive client supports it
> ---------------------------------------------------------
>
>                 Key: SPARK-16119
>                 URL: https://issues.apache.org/jira/browse/SPARK-16119
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.0.0
>            Reporter: Marcelo Vanzin
>            Assignee: Marcelo Vanzin
>             Fix For: 2.1.0
>
>
> There's currently code that explicitly disables the "PURGE" flag when dropping a table:
> {code}
>     if (ctx.PURGE != null) {
>       throw operationNotAllowed("DROP TABLE ... PURGE", ctx)
>     }
> {code}
> That flag is necessary in certain situations where the table data cannot be moved to the trash (which will be tried unless "PURGE" is requested). If the client supports it (Hive >= 0.14.0 according to the Hive docs), we should allow that option to be defined.
> For non-Hive tables, as far as I can understand, "PURGE" is the current behavior of Spark.
> The same limitation exists currently for "ALTER TABLE ... DROP PARTITION" so should probably also be covered by this change.



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