[
https://issues.apache.org/jira/browse/HIVE-10172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14395601#comment-14395601
]
Gopal V commented on HIVE-10172:
--------------------------------
[~prasanth_j]: Patch fixes the performance regression, so +1 once the tests run
successfully (the smb_mapjoin seems to be a flaky run).
I still see the list re-allocations at runtime for the ArrayList<>, which needs
to be a follow-up JIRA. Can you file one which targets refactoring the PPD
planning layers?
We need to normalize types during predicate construction, so that a user can
get a warning during an "EXPLAIN" query that PPD is turned off - particularly
because the IN() clause is intended to be a type-safe list.
> Fix performance regression caused by HIVE-8122 for ORC
> ------------------------------------------------------
>
> Key: HIVE-10172
> URL: https://issues.apache.org/jira/browse/HIVE-10172
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-10172.1.patch, HIVE-10172.2.patch,
> HIVE-10172.3.patch
>
>
> See HIVE-10164 for description. We should fix this in trunk and move it to
> branch.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
