[
https://issues.apache.org/jira/browse/HIVE-16182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gopal V updated HIVE-16182:
---------------------------
Status: Patch Available (was: Open)
> Semijoin: Avoid VectorHashKeyWrapper allocations for the bloom hash aggregate
> -----------------------------------------------------------------------------
>
> Key: HIVE-16182
> URL: https://issues.apache.org/jira/browse/HIVE-16182
> Project: Hive
> Issue Type: Improvement
> Components: Vectorization
> Affects Versions: 2.2.0
> Reporter: Gopal V
> Assignee: Gopal V
> Labels: performance
> Attachments: HIVE-16182.1.patch
>
>
> To avoid GC spam during the hash aggregate part of the bloom filter, the key
> for the semijoin can be special-cased as an immutable empty key.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
