[GitHub] [spark] xiongbo-sjtu commented on pull request #43021: [SPARK-45227][CORE] Fix a subtle thread-safety issue with CoarseGrainedExecutorBackend

2023-09-28 Thread via GitHub


xiongbo-sjtu commented on PR #43021:
URL: https://github.com/apache/spark/pull/43021#issuecomment-1740398612

   Thanks.  Just submit another pull request to patch branch-3.3
   
   https://github.com/apache/spark/pull/43176


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[GitHub] [spark] xiongbo-sjtu commented on pull request #43021: [SPARK-45227][CORE] Fix a subtle thread-safety issue with CoarseGrainedExecutorBackend

2023-09-28 Thread via GitHub


xiongbo-sjtu commented on PR #43021:
URL: https://github.com/apache/spark/pull/43021#issuecomment-1740112354

   > @HeartSaVioR, @HyukjinKwon I am seeing multiple PR's failing [with 
this](https://github.com/xiongbo-sjtu/spark/actions/runs/6332587036/job/17203381073#step:10:24799).
 It looks like some timeout issue, did anything change recently which might be 
triggering it ?
   > 
   > This PR should not be impacted by those modules, but I would have prefer 
clean builds before merging.
   
   All failed tests have passed after I rerun them.  Solving the fragile unit 
tests is an orthogonal concern.
   
   Any more concern or blocker for merging this pull request?  @mridulm 


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[GitHub] [spark] xiongbo-sjtu commented on pull request #43021: [SPARK-45227][CORE] Fix a subtle thread-safety issue with CoarseGrainedExecutorBackend

2023-09-26 Thread via GitHub


xiongbo-sjtu commented on PR #43021:
URL: https://github.com/apache/spark/pull/43021#issuecomment-1736717071

   Gentlemen, please 👍 if you're okay with getting this pull request merged.


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[GitHub] [spark] xiongbo-sjtu commented on pull request #43021: [SPARK-45227][CORE] Fix a subtle thread-safety issue with CoarseGrainedExecutorBackend

2023-09-26 Thread via GitHub


xiongbo-sjtu commented on PR #43021:
URL: https://github.com/apache/spark/pull/43021#issuecomment-1736610019

   > I think it would be good to add the content of 
[SPARK-45227](https://issues.apache.org/jira/browse/SPARK-45227) here to the 
PR's description.
   
   


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[GitHub] [spark] xiongbo-sjtu commented on pull request #43021: [SPARK-45227][CORE] Fix a subtle thread-safety issue with CoarseGrainedExecutorBackend

2023-09-26 Thread via GitHub


xiongbo-sjtu commented on PR #43021:
URL: https://github.com/apache/spark/pull/43021#issuecomment-1736478403

   +1 to the comment made by @JoshRosen   
   
   Our production fleet has tens of thousands Spark jobs running daily.  After 
migrating those jobs from Spark 2 to Spark 3, we've observed the issue (i.e., 
thread dumps show that the dispatcher thread is stuck with the reported stack 
trace) only a handful of times.
   
   The unit test was added so that the thread-safety will not be 
unintentionally refactored away later.  It's not meant to simulate the race 
condition. The bottom line is that no functional regression is expected after 
this pull request replaces the vanilla mutable.hashmap with CHM.


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[GitHub] [spark] xiongbo-sjtu commented on pull request #43021: [SPARK-45227][CORE] Fix a subtle thread-safety issue with CoarseGrainedExecutorBackend

2023-09-22 Thread via GitHub


xiongbo-sjtu commented on PR #43021:
URL: https://github.com/apache/spark/pull/43021#issuecomment-1732099260

   @jiangxb1987 @mridulm 
   
   Eventually got all tests passed in Github Actions.  Any concern on merging 
this pull request?
   
   As a side note, I've discovered [another minor 
issue](https://issues.apache.org/jira/browse/SPARK-45283), but will address 
that in another pull request.
   
   Thanks,
   Bo


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