[jira] Commented: (HIVE-1862) Revive partition filtering in the Hive MetaStore

["Ashutosh Chauhan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-1862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974404#action_12974404 ] 

Ashutosh Chauhan commented on HIVE-1862:
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I can see four possible routes going forward:

1) Fish out exact issue by coming up with a test case and submit it to jdo community and ask for a fix in the library.
Assuming 1) may take longer and is unbounded, remaining on older stable jdo version presents following possibilities.

2) Rewrite the jdo query to not make use of Collection.get() which only exists in newer jdo version and thereby required a jdo lib upgrade.

3) Refactor the partition pruning code from ql to metastore so that metastore returns a filtered list of partition

4) If 2) is not possible then, then push equality predicate to MySQL and do filtering for other predicates using 3) in Metastore.

> Revive partition filtering in the Hive MetaStore
> ------------------------------------------------
>
>                 Key: HIVE-1862
>                 URL: https://issues.apache.org/jira/browse/HIVE-1862
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>    Affects Versions: 0.7.0
>            Reporter: Devaraj Das
>             Fix For: 0.7.0
>
>
> HIVE-1853 downgraded the JDO version. This makes the feature of partition filtering in the metastore unusable. This jira is to keep track of the lost feature and discussing approaches to bring it back.

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