[
https://issues.apache.org/jira/browse/HIVE-16523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15987688#comment-15987688
]
Gopal V commented on HIVE-16523:
--------------------------------
bq. is it a good idea to store hash ctx in every wrapper?
That was an assumption - the current object has a 4 byte slack.
{code}
44 4 org.apache.hadoop.hive.common.type.HiveIntervalDayTime[]
VectorHashKeyWrapper.intervalDayTimeValues null
48 4 boolean[]
VectorHashKeyWrapper.isNull null
52 4 (loss
due to the next object alignment)
{code}
> VectorHashKeyWrapper hash code for strings is not so good
> ---------------------------------------------------------
>
> Key: HIVE-16523
> URL: https://issues.apache.org/jira/browse/HIVE-16523
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-16523.01.patch, HIVE-16523.02.patch,
> HIVE-16523.patch
>
>
> Perf issues in vectorized gby on some string keys
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
