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


Hive QA commented on HIVE-23122:

Here are the results of testing the latest attachment:

{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:*

Test results:
Console output:
Test logs:

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

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:
>             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|].
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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