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https://issues.apache.org/jira/browse/HIVE-2213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13051333#comment-13051333
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Sohan Jain commented on HIVE-2213:
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I'd also like to point one more thing out. The previous implementation of
get_partitions_ps_with_auth() did not actually make use of the inputted user
name or group name, nor did it set any auth privileges on the desired
partitions.
This patch adds authentication privileges, which unfortunately slows down
get_partitions_ps_with_auth(), since we have to iterate through all of the
partitions and set privileges before returning them. What is the desired
behavior here?
> Optimize get_partition_names_ps()
> ---------------------------------
>
> Key: HIVE-2213
> URL: https://issues.apache.org/jira/browse/HIVE-2213
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Reporter: Sohan Jain
> Assignee: Sohan Jain
> Attachments: HIVE-2213.1.patch, HIVE-2213.3.patch
>
>
> If a table has a large number of partitions, get_partition_names_ps() make
> take a long time to execute, because we get all of the partition names from
> the database. This is not very memory efficient, and the operation can be
> pushed down to the JDO layer without getting all of the names first.
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