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Posted to dev@hive.apache.org by "Laljo John Pullokkaran (JIRA)" <ji...@apache.org> on 2014/09/06 23:24:29 UTC

[jira] [Updated] (HIVE-7655) CBO: Reading of partitioned table stats slows down explain

     [ https://issues.apache.org/jira/browse/HIVE-7655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Laljo John Pullokkaran updated HIVE-7655:
-----------------------------------------
    Summary: CBO: Reading of partitioned table stats slows down explain  (was: Reading of partitioned table stats slows down explain)

> CBO: Reading of partitioned table stats slows down explain
> ----------------------------------------------------------
>
>                 Key: HIVE-7655
>                 URL: https://issues.apache.org/jira/browse/HIVE-7655
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 0.13.1
>            Reporter: Mostafa Mokhtar
>            Assignee: Harish Butani
>              Labels: hive
>             Fix For: 0.14.0
>
>         Attachments: HIVE-7655.1.patch
>
>
> This defect is due to a regression introduced in https://issues.apache.org/jira/browse/HIVE-7625, explain for queries that touch partitioned tables is 10x slower.
> RelOptHiveTable.getRowCount calls listPartitionsWithAuthInfo which returns the data from all partitions, listPartitionsByExpr should be used instead.



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