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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/08/08 07:26:29 UTC

[GitHub] [pulsar] zymap opened a new pull request, #16983: Avoid unnecessary lock on stats thread

zymap opened a new pull request, #16983:
URL: https://github.com/apache/pulsar/pull/16983

   ---
   
   ### Motivation
   
   We found there has a block between the pulsar-ordered executor and
   the pulsar-stats-updater executor.
   
   The pulsar-ordered executor is trying to createManagedLedgerOffloader,
   and the pulsar-stats-updater is getting the compactor. Both them want
   to get the lock.
   
   We have an improvement about the `createManagedLedgerOffloader` before.
   https://github.com/apache/pulsar/pull/15883
   
   We are using `getCompactor(false)` for the stats related operations.
   The `getCompactor` is guarded by `synchronized`. Actually, the stats
   just want to get the current compactor without initializing it. We
   don't need to use `synchronized` to guard this operation.
   
   ### Modifications
   
   Remove unnecessary `synchronized` on the `getCompactor` method.
   
   
   ### Verifying this change
   
   - [ ] Make sure that the change passes the CI checks.
   
   *(Please pick either of the following options)*
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   *(or)*
   
   This change is already covered by existing tests, such as *(please describe tests)*.
   
   *(or)*
   
   This change added tests and can be verified as follows:
   
   *(example:)*
     - *Added integration tests for end-to-end deployment with large payloads (10MB)*
     - *Extended integration test for recovery after broker failure*
   
   ### Does this pull request potentially affect one of the following parts:
   
   *If `yes` was chosen, please highlight the changes*
   
     - Dependencies (does it add or upgrade a dependency): (yes / no)
     - The public API: (yes / no)
     - The schema: (yes / no / don't know)
     - The default values of configurations: (yes / no)
     - The wire protocol: (yes / no)
     - The rest endpoints: (yes / no)
     - The admin cli options: (yes / no)
     - Anything that affects deployment: (yes / no / don't know)
   
   ### Documentation
   
   Check the box below or label this PR directly.
   
   Need to update docs? 
   
   - [ ] `doc-required` 
   (Your PR needs to update docs and you will update later)
     
   - [x] `doc-not-needed` 
   (Please explain why)
     
   - [ ] `doc` 
   (Your PR contains doc changes)
   
   - [ ] `doc-complete`
   (Docs have been already added)


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[GitHub] [pulsar] github-actions[bot] commented on pull request #16983: [improve][broker]Remove unnecessary lock on the stats thread

Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #16983:
URL: https://github.com/apache/pulsar/pull/16983#issuecomment-1216199427

   @zymap Please provide a correct documentation label for your PR.
   Instructions see [Pulsar Documentation Label Guide](https://docs.google.com/document/d/1Qw7LHQdXWBW9t2-r-A7QdFDBwmZh6ytB4guwMoXHqc0).


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[GitHub] [pulsar] zymap merged pull request #16983: [improve][broker]Remove unnecessary lock on the stats thread

Posted by GitBox <gi...@apache.org>.
zymap merged PR #16983:
URL: https://github.com/apache/pulsar/pull/16983


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[GitHub] [pulsar] codelipenghui commented on pull request #16983: Remove unnecessary lock on stats thread

Posted by GitBox <gi...@apache.org>.
codelipenghui commented on PR #16983:
URL: https://github.com/apache/pulsar/pull/16983#issuecomment-1207886885

   @zymap I have updated the PR title, please check.
   


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[GitHub] [pulsar] github-actions[bot] commented on pull request #16983: [improve][broker]Remove unnecessary lock on the stats thread

Posted by GitBox <gi...@apache.org>.
github-actions[bot] commented on PR #16983:
URL: https://github.com/apache/pulsar/pull/16983#issuecomment-1216022287

   @zymap Please provide a correct documentation label for your PR.
   Instructions see [Pulsar Documentation Label Guide](https://docs.google.com/document/d/1Qw7LHQdXWBW9t2-r-A7QdFDBwmZh6ytB4guwMoXHqc0).


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