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Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2015/08/27 07:33:45 UTC

[jira] [Assigned] (HIVE-10175) PartitionPruning lacks a fast-path exit for large IN() queries

     [ https://issues.apache.org/jira/browse/HIVE-10175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gopal V reassigned HIVE-10175:
------------------------------

    Assignee: Gopal V  (was: Gunther Hagleitner)

> PartitionPruning lacks a fast-path exit for large IN() queries
> --------------------------------------------------------------
>
>                 Key: HIVE-10175
>                 URL: https://issues.apache.org/jira/browse/HIVE-10175
>             Project: Hive
>          Issue Type: Bug
>          Components: Physical Optimizer, Tez
>    Affects Versions: 1.2.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>            Priority: Minor
>         Attachments: HIVE-10175.profile.html
>
>
> TezCompiler::runDynamicPartitionPruning() & ppr.PartitionPruner() calls the graph walker even if all tables provided to the optimizer are unpartitioned (or temporary) tables.
> This makes it extremely slow as it will walk & inspect a large/complex FilterOperator later in the pipeline.



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