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From "John Sichi (JIRA)" <>
Subject [jira] Commented: (HIVE-1609) Support partition filtering in metastore
Date Wed, 15 Sep 2010 20:17:35 GMT


John Sichi commented on HIVE-1609:


* In package.jdo, you added default-fetch-group="false" for the view attributes.  Could you
explain what that does and why that is needed?  I'm guessing it defers fetch of these attributes,
which makes sense as long as it's transparent.

* HIVE-1539 mentions the need to upgrade datanucleus to 2.2.0.m2 in order to fix some classloader
threading issues; maybe we should jump straight to that version?

* Per HIVE-1626, we should avoid using java.util.Stack.  Just FYI; we can clean this one up
as part of that JIRA.

* Run checkstyle on new code to bring it into conformance

Also, I've asked Paul Yang to take a look at the patch to give feedback on any other issues
(separate from the usage of JavaCC).

> Support partition filtering in metastore
> ----------------------------------------
>                 Key: HIVE-1609
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Metastore
>            Reporter: Ajay Kidave
>            Assignee: Ajay Kidave
>             Fix For: 0.7.0
>         Attachments: hive_1609.patch, hive_1609_2.patch
> The metastore needs to have support for returning a list of partitions based on user
specified filter conditions. This will be useful for tools which need to do partition pruning.
Howl is one such use case. The way partition pruning is done during hive query execution need
not be changed.

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