Sean Hsuan-Yi Chu created DRILL-4577:
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Summary: 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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