[
https://issues.apache.org/jira/browse/HIVE-16520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Dai updated HIVE-16520:
------------------------------
Attachment: HIVE-16520.4.patch
Fix UT failures.
> Cache hive metadata in metastore
> --------------------------------
>
> Key: HIVE-16520
> URL: https://issues.apache.org/jira/browse/HIVE-16520
> Project: Hive
> Issue Type: New Feature
> Components: Metastore
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Attachments: HIVE-16520-1.patch, HIVE-16520.2.patch,
> HIVE-16520.3.patch, HIVE-16520.4.patch, HIVE-16520-proto-2.patch,
> HIVE-16520-proto.patch
>
>
> During Hive 2 benchmark, we find Hive metastore operation take a lot of time
> and thus slow down Hive compilation. In some extreme case, it takes much
> longer than the actual query run time. Especially, we find the latency of
> cloud db is very high and 90% of total query runtime is waiting for metastore
> SQL database operations. Based on this observation, the metastore operation
> performance will be greatly enhanced if we have a memory structure which
> cache the database query result.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
