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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20549) Allow user set query tag, and kill query with tag
Date Fri, 19 Oct 2018 02:28:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16656193#comment-16656193
] 

Hive QA commented on HIVE-20549:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12944497/HIVE-20549.6.patch

{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.

{color:green}SUCCESS:{color} +1 due to 15110 tests passed

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/14557/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/14557/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-14557/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12944497 - PreCommit-HIVE-Build

> Allow user set query tag, and kill query with tag
> -------------------------------------------------
>
>                 Key: HIVE-20549
>                 URL: https://issues.apache.org/jira/browse/HIVE-20549
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>            Priority: Major
>             Fix For: 4.0.0, 3.2.0
>
>         Attachments: HIVE-20549.1.patch, HIVE-20549.2.patch, HIVE-20549.3.patch, HIVE-20549.4.patch,
HIVE-20549.5.patch, HIVE-20549.6.patch
>
>
> HIVE-19924 add capacity for replication job set a query tag and kill the replication
distcp job with the tag. Here I make it more general, user can set arbitrary "hive.query.tag"
in sql script, and kill query with the tag. Hive will cancel the corresponding operation in
hs2, along with Tez/MR application launched for the query. For example:
> {code}
> set hive.query.tag=mytag;
> select ..... -- long running query
> {code}
> In another session:
> {code}
> kill query 'mytag';
> {code}
> There're limitations in the implementation:
> 1. No tag duplication check. There's nothing to prevent conflicting tag for same user,
and kill query will kill queries share the same tag. However, kill query will not kill queries
from different user unless admin. So different user might share the same tag
> 2. In multiple hs2 environment, kill statement should be issued to all hs2 to make sure
the corresponding operation is canceled. When beeline/jdbc connects to hs2 using regular way
(zookeeper url), the session will connect to random hs2, which might be different than the
hs2 where query run on. User can use HiveConnection.getAllUrls or beeline --getUrlsFromBeelineSite
(HIVE-20507) to get a list of all hs2 instances.



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