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Posted to yarn-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/09/16 10:10:00 UTC
[jira] [Commented] (YARN-11191) Global Scheduler refreshQueue cause deadLock
[ https://issues.apache.org/jira/browse/YARN-11191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17605761#comment-17605761 ]
ASF GitHub Bot commented on YARN-11191:
---------------------------------------
hadoop-yetus commented on PR #4726:
URL: https://github.com/apache/hadoop/pull/4726#issuecomment-1249182002
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 42s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files found. |
| +0 :ok: | codespell | 0m 1s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 1s | | detect-secrets was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain any @author tags. |
| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to include 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 37m 54s | | trunk passed |
| +1 :green_heart: | compile | 1m 10s | | trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | compile | 1m 6s | | trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 2m 4s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 18s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 13s | | trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 0m 59s | | trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 2m 22s | | trunk passed |
| +1 :green_heart: | shadedclient | 23m 46s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 56s | | the patch passed |
| +1 :green_heart: | compile | 1m 7s | | the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javac | 1m 7s | | the patch passed |
| +1 :green_heart: | compile | 0m 57s | | the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 0m 57s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| -0 :warning: | checkstyle | 0m 44s | [/results-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4726/3/artifact/out/results-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt) | hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager: The patch generated 8 new + 138 unchanged - 0 fixed = 146 total (was 138) |
| +1 :green_heart: | mvnsite | 1m 4s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 45s | | the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 0m 44s | | the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 2m 2s | | the patch passed |
| +1 :green_heart: | shadedclient | 21m 36s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 99m 12s | | hadoop-yarn-server-resourcemanager in the patch passed. |
| +1 :green_heart: | asflicense | 0m 43s | | The patch does not generate ASF License warnings. |
| | | 201m 55s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4726/3/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/4726 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux 4e2b917b27d3 4.15.0-191-generic #202-Ubuntu SMP Thu Aug 4 01:49:29 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 281c169aca12bd5e932295c6eb78e69ab9d28e86 |
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| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4726/3/testReport/ |
| Max. process+thread count | 964 (vs. ulimit of 5500) |
| modules | C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager U: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4726/3/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
> Global Scheduler refreshQueue cause deadLock
> ---------------------------------------------
>
> Key: YARN-11191
> URL: https://issues.apache.org/jira/browse/YARN-11191
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Affects Versions: 2.9.0, 3.0.0, 3.1.0, 2.10.0, 3.2.0, 3.3.0
> Reporter: ben yang
> Priority: Major
> Labels: pull-request-available
> Attachments: 1.jstack, Lock holding status.png, YARN-11191.001.patch
>
>
> This is a potential bug may impact all open premmption cluster.In our current version with preemption enabled, the capacityScheduler will call the refreshQueue method of the PreemptionManager when it refreshQueue. This process hold the preemptionManager write lock and require csqueue read lock.Meanwhile,ParentQueue.canAssignToThisQueue will hold csqueue readLock and require PreemptionManager ReadLock.
> There is a possibility of deadlock at this time.Because readlock has one rule on unfair policy, when a lock is already occupied by a read lock and the first request in the lock competition queue is a write lock request,other read lock requests cann‘t acquire the lock.
> So the potential deadlock is:
> {code:java}
> CapacityScheduler.refreshQueue: hold: PremmptionManager.writeLock
> require: csqueue.readLock
> CapacityScheduler.schedule: hold: csqueue.readLock
> require: PremmptionManager.readLock
> other thread(completeContainer,release Resource,etc.): require: csqueue.writeLock
> {code}
> The jstack logs at the time were as follows
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