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From "Hive QA (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-23122) LLAP: TaskExecutorService should log details about task eviction decision details
Date Fri, 03 Apr 2020 22:38:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-23122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17074939#comment-17074939
] 

Hive QA commented on HIVE-23122:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12998710/HIVE-23122.03.patch

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

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 18172 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.metastore.TestMetastoreHousekeepingLeaderEmptyConfig.testHouseKeepingThreadExistence
(batchId=252)
org.apache.hive.service.TestDFSErrorHandling.org.apache.hive.service.TestDFSErrorHandling
(batchId=290)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/21427/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/21427/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-21427/

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
Tests exited with: TestsFailedException: 2 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12998710 - PreCommit-HIVE-Build

> LLAP: TaskExecutorService should log details about task eviction decision details
> ---------------------------------------------------------------------------------
>
>                 Key: HIVE-23122
>                 URL: https://issues.apache.org/jira/browse/HIVE-23122
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: László Bodor
>            Assignee: László Bodor
>            Priority: Major
>         Attachments: HIVE-23122.02.patch, HIVE-23122.03.patch
>
>
> TaskExecutorService maintains a waitQueue, and can evict a task in favor of another.
Under the hood, the queue uses a configurable [comparator|https://github.com/apache/hive/tree/master/llap-server/src/java/org/apache/hadoop/hive/llap/daemon/impl/comparator].
The currently available comparators typically use the following properties of a task(wrapper):
> getWithinDagPriority: related to vertex
> currentAttemptStartTime
> firstAttemptStartTime
> knownPending: remaining upstream tasks
> The problem is, when an eviction happens, the INFO level message doesn't provide any
insight about the decision, only attempts ids like below:
> {code}
> attempt_1585248378306_0010_72_02_000096_8 evicted from wait queue in favor of attempt_1585248378306_0003_175_02_000079_175
because of lower priority
> {code}



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