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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20797) Print Number of Locks Acquired
Date Sun, 03 Feb 2019 05:47:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16759296#comment-16759296
] 

Hive QA commented on HIVE-20797:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12957423/HIVE-20797.6.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:green}SUCCESS:{color} +1 due to 15722 tests passed

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/15910/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/15910/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-15910/

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: 12957423 - PreCommit-HIVE-Build

> Print Number of Locks Acquired
> ------------------------------
>
>                 Key: HIVE-20797
>                 URL: https://issues.apache.org/jira/browse/HIVE-20797
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2, Locking
>    Affects Versions: 4.0.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Minor
>              Labels: newbie, noob
>         Attachments: HIVE-20797.1.patch, HIVE-20797.2.patch, HIVE-20797.3.patch, HIVE-20797.4.patch,
HIVE-20797.5.patch, HIVE-20797.6.patch
>
>
> The number of locks acquired by a query can greatly influence the performance and stability
of the system, especially for ZK locks.  Please add INFO level logging with the number of
locks each query obtains.
> Log here:
> https://github.com/apache/hive/blob/3963c729fabf90009cb67d277d40fe5913936358/ql/src/java/org/apache/hadoop/hive/ql/Driver.java#L1670-L1672
> {quote}
> A list of acquired locks will be stored in the org.apache.hadoop.hive.ql.Context object
and can be retrieved via org.apache.hadoop.hive.ql.Context#getHiveLocks.
> {quote}
> https://github.com/apache/hive/blob/758ff449099065a84c46d63f9418201c8a6731b1/ql/src/java/org/apache/hadoop/hive/ql/lockmgr/HiveTxnManager.java#L115-L127



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