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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4914) filtering via partition name should be done inside metastore server (implementation)
Date Tue, 27 Aug 2013 21:51:51 GMT

     [ https://issues.apache.org/jira/browse/HIVE-4914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Shelukhin updated HIVE-4914:
-----------------------------------

    Description: 
Currently, if the filter pushdown is impossible (which is most cases), the client gets all
partition names from metastore, filters them, and asks for partitions by names for the filtered
set.

Metastore server code should do that instead; it should check if pushdown is possible and
do it if so; otherwise it should do name-based filtering.

Saves the roundtrip with all partition names from the server to client, and also removes the
need to have pushdown viability checking on both sides.

NO PRECOMMIT TESTS

  was:
Currently, if the filter pushdown is impossible (which is most cases), the client gets all
partition names from metastore, filters them, and asks for partitions by names for the filtered
set.

Metastore server code should do that instead; it should check if pushdown is possible and
do it if so; otherwise it should do name-based filtering.

Saves the roundtrip with all partition names from the server to client, and also removes the
need to have pushdown viability checking on both sides.

    
> filtering via partition name should be done inside metastore server (implementation)
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-4914
>                 URL: https://issues.apache.org/jira/browse/HIVE-4914
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-4914.01.patch, HIVE-4914-only-no-gen.patch, HIVE-4914-only.patch,
HIVE-4914.patch, HIVE-4914.patch, HIVE-4914.patch
>
>
> Currently, if the filter pushdown is impossible (which is most cases), the client gets
all partition names from metastore, filters them, and asks for partitions by names for the
filtered set.
> Metastore server code should do that instead; it should check if pushdown is possible
and do it if so; otherwise it should do name-based filtering.
> Saves the roundtrip with all partition names from the server to client, and also removes
the need to have pushdown viability checking on both sides.
> NO PRECOMMIT TESTS

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