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https://issues.apache.org/jira/browse/DRILL-4577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15226708#comment-15226708
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ASF GitHub Bot commented on DRILL-4577:
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GitHub user hsuanyi opened a pull request:
https://github.com/apache/drill/pull/461
DRILL-4577: Construct a specific path for querying all the tables fro…
…m a hive database
@vkorukanti Can you help review? Thanks.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hsuanyi/incubator-drill DRILL-4577
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/461.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #461
----
commit 135464f53fe1a3070df4495e350be3e540183bfe
Author: Hsuan-Yi Chu <[email protected]>
Date: 2016-04-04T23:05:04Z
DRILL-4577: Construct a specific path for querying all the tables from a
hive database
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> Improve performance for query on INFORMATION_SCHEMA when HIVE is plugged in
> ---------------------------------------------------------------------------
>
> Key: DRILL-4577
> URL: https://issues.apache.org/jira/browse/DRILL-4577
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Hive
> Reporter: Sean Hsuan-Yi Chu
> Assignee: Sean Hsuan-Yi Chu
> Fix For: 1.7.0
>
>
> A query such as
> {code}
> select * from INFORMATION_SCHEMA.`TABLES`
> {code}
> is converted as calls to fetch all tables from storage plugins.
> When users have Hive, the calls to hive metadata storage would be:
> 1) get_table
> 2) get_partitions
> However, the information regarding partitions is not used in this type of
> queries. Beside, a more efficient way is to fetch tables is to use
> get_multi_table call.
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