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Posted to issues@lucene.apache.org by GitBox <gi...@apache.org> on 2021/09/30 09:47:59 UTC

[GitHub] [lucene] ChrisHegarty opened a new pull request #337: LUCENE-10118: Expand the log message when CMS.MergeThread completes its merge operation

ChrisHegarty opened a new pull request #337:
URL: https://github.com/apache/lucene/pull/337


   # Description
   
   Improve merge thread activity logging.
   
   # Solution
   
   Expand the log message when CMS.MergeThread completes its merge operation, to include addition useful diagnostic information, like the total-bytes-written, the time taken, as well as rate limiter information. Also, while here, unify the thread start and end log output to help improve tracing. 
   
   Example log output:
   ```
   merge thread Lucene Merge Thread #0 start
   merge thread Lucene Merge Thread #0 merge segment [_2] done estSize=0.0 MB (written=0.0 MB) runTime=0.0s (stopped=0.0s, paused=0.0s) rate=unlimited
   merge thread Lucene Merge Thread #0 end
   ```
   
   # Tests
   
   An additional test scenario, `testMergeThreadMessages`, has been added that exercises and validates the log output.
   
   # Checklist
   
   Please review the following and check all that apply:
   
   - [x] I have reviewed the guidelines for [How to Contribute](https://wiki.apache.org/lucene/HowToContribute) and my code conforms to the standards described there to the best of my ability.
   - [x] I have created a Jira issue and added the issue ID to my pull request title.
   - [x] I have given Lucene maintainers [access](https://help.github.com/en/articles/allowing-changes-to-a-pull-request-branch-created-from-a-fork) to contribute to my PR branch. (optional but recommended)
   - [x] I have developed this patch against the `main` branch.
   - [x] I have run `./gradlew check`.
   - [x] I have added tests for my changes.
   


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[GitHub] [lucene] romseygeek merged pull request #337: LUCENE-10118: Expand the log message when CMS.MergeThread completes its merge operation

Posted by GitBox <gi...@apache.org>.
romseygeek merged pull request #337:
URL: https://github.com/apache/lucene/pull/337


   


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