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https://issues.apache.org/jira/browse/YARN-5889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15853626#comment-15853626
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Sunil G commented on YARN-5889:
-------------------------------
HI [~eepayne].
Sorry for troubling you again. I ran many similar test cases in my local
cluster. I could not get the case mentioned by you, even though i tested for
many time today and yesterday. So i thought I might be missing something.
I will try share my test case results here:
- I used {{YARN-5889.0010.patch}} patch for my tests.
- One node cluster (8GB).
- I used sleep job to make sure i have a control on test time and on number of
containers.
- AM and other containers were using 2G containers always.
*Test Scenario* (For 3 test cases, same scenario were used, only change is in
configuration)
1) Ran 4 containers including AM. Pending RR is 2Gb for one more container
2) Killed all non-AM containers 3 times (totally 9 containers were killed using
FORCEFUL_SHUTDOWN signal)
3) Killed AM containers once and job re-ran.
+Scenario 1:+ (One Queue 100%)
MULP = 100, ULFactor = 1
Output:
Application retook whole cluster always when one/more container were killed.
+Scenario 2:+ (One Queue 100%)
MULP = 50, ULFactor = 1
Output:
Application retook whole cluster always when one/more container were killed. UL
was 50%, still it got whole cluster.
+Scenario 3:+ (Two Queues 50% each)
MULP = 50, ULFactor = 2
Output:
Application retook whole cluster always when one/more container were killed. UL
was 50%, still it got whole cluster as UL factor was 2. (If its 1, then only
6Gb could be used).
Could you please help to take a look and share me what I might have missed from
your test scenario. I ll continue test some more scenarios and will keep posted.
> Improve user-limit calculation in capacity scheduler
> ----------------------------------------------------
>
> Key: YARN-5889
> URL: https://issues.apache.org/jira/browse/YARN-5889
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Reporter: Sunil G
> Assignee: Sunil G
> Attachments: YARN-5889.0001.patch,
> YARN-5889.0001.suggested.patchnotes, YARN-5889.0002.patch,
> YARN-5889.0003.patch, YARN-5889.0004.patch, YARN-5889.0005.patch,
> YARN-5889.0006.patch, YARN-5889.0007.patch, YARN-5889.0008.patch,
> YARN-5889.0009.patch, YARN-5889.0010.patch, YARN-5889.v0.patch,
> YARN-5889.v1.patch, YARN-5889.v2.patch
>
>
> Currently user-limit is computed during every heartbeat allocation cycle with
> a write lock. To improve performance, this tickets is focussing on moving
> user-limit calculation out of heartbeat allocation flow.
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