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https://issues.apache.org/jira/browse/RATIS-1921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17779838#comment-17779838
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GuoHao commented on RATIS-1921:
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We're thinking of adding a reference count. What do you think? [~ivanandika]
> Shared worker group in WorkerGroupGetter should be closed
> ---------------------------------------------------------
>
> Key: RATIS-1921
> URL: https://issues.apache.org/jira/browse/RATIS-1921
> Project: Ratis
> Issue Type: Sub-task
> Components: Netty
> Reporter: Ivan Andika
> Assignee: Ivan Andika
> Priority: Minor
>
> When benchmarking Ozone streaming pipeline using `ozone freon ockg`, the
> benchmark would not end although all the keys have been written.
> Using Arthas, found that non-daemon threads like
> "NettyClientStreamRpc-workerGroup–thread1" are still running even after the
> benchmark has finished.
> It seems that when hdds.ratis.raft.netty.dataStream.client.worker-group.share
> is set to true, it will create a worker group that will be shared. However,
> this worker group will never be closed causing the JVM shutdown hook to never
> be triggered. The benchmark was able to work normally if the share
> configuration is disabled.
> Need to find a way to shutdown the worker group gracefully without losing the
> shared worker group benefit.
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