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Posted to issues@hive.apache.org by "Hive QA (JIRA)" <ji...@apache.org> on 2018/04/16 18:55:00 UTC
[jira] [Commented] (HIVE-12369) Native Vector GroupBy (Part 1)
[ https://issues.apache.org/jira/browse/HIVE-12369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16439863#comment-16439863 ]
Hive QA commented on HIVE-12369:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 14s{color} | {color:red} /data/hiveptest/logs/PreCommit-HIVE-Build-10255/patches/PreCommit-HIVE-Build-10255.patch does not apply to master. Rebase required? Wrong Branch? See http://cwiki.apache.org/confluence/display/Hive/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-10255/yetus.txt |
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This message was automatically generated.
> Native Vector GroupBy (Part 1)
> ------------------------------
>
> Key: HIVE-12369
> URL: https://issues.apache.org/jira/browse/HIVE-12369
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-12369.01.patch, HIVE-12369.02.patch, HIVE-12369.05.patch, HIVE-12369.06.patch, HIVE-12369.091.patch, HIVE-12369.094.patch, HIVE-12369.095.patch
>
>
> Implement Native Vector GroupBy using fast hash table technology developed for Native Vector MapJoin, etc.
> Patch is currently limited to a single Long key with a single COUNT aggregation. Or, a single Long key and no aggregation also known as duplicate reduction.
> 3 new classes introduces that stored the count in the slot table and don't allocate hash elements:
> {noformat}
> COUNT(column) VectorGroupByHashLongKeyCountColumnOperator
> COUNT(key) VectorGroupByHashLongKeyCountKeyOperator
> COUNT(*) VectorGroupByHashLongKeyCountStarOperator
> {noformat}
> And the duplicate reduction operator a single Long key:
> {noformat}
> VectorGroupByHashLongKeyDuplicateReductionOperator
> {noformat}
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