[
https://issues.apache.org/jira/browse/HIVE-12508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15025145#comment-15025145
]
Sergey Shelukhin commented on HIVE-12508:
-----------------------------------------
+1
> HiveAggregateJoinTransposeRule places a heavy load on the metadata system
> -------------------------------------------------------------------------
>
> Key: HIVE-12508
> URL: https://issues.apache.org/jira/browse/HIVE-12508
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 2.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-12508.patch
>
>
> Finding out whether the input is already unique requires a call to
> areColumnsUnique that currently (until CALCITE-794 is fixed) places a heavy
> load on the metadata system. This can lead to long CBO planning.
> This is a temporary fix that avoid the call to the method till then.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
