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https://issues.apache.org/jira/browse/KAFKA-19724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18028593#comment-18028593
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Fatih Celik commented on KAFKA-19724:
-------------------------------------

For this issue, I created the following PR: 
[https://github.com/apache/kafka/pull/20668 
|https://github.com/apache/kafka/pull/20668]

This is my first contribution to an open source project :) Could you please let 
me know if there are any things I need to fix?

> Global stream thread ignores all exceptions
> -------------------------------------------
>
>                 Key: KAFKA-19724
>                 URL: https://issues.apache.org/jira/browse/KAFKA-19724
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 3.4.0
>            Reporter: Mikołaj Bul
>            Assignee: Fatih Celik
>            Priority: Major
>              Labels: beginner, newbie
>
> {{globalStreamThread}} in {{KafkaStreams}} class ignores all exceptions and 
> fails to apply the user-provided {{StreamsUncaughtExceptionHandler}} in:
> {code:java}
> public void setUncaughtExceptionHandler(final StreamsUncaughtExceptionHandler 
> userStreamsUncaughtExceptionHandler)
> {code}
> This can lead to streams being stuck in faulty state after an exception is 
> thrown during their initialization phase (e.g. failure to load the RocksDB 
> native library). The exception isn't logged, so debugging such problem is 
> difficult.
> From my understanding of the {{b62d8b97}} commit message, the following code 
> is unnecessary as the {{globalStreamThread}} can't be replaced and the issue 
> description from KAFKA-12699 doesn't apply to it. Removing it should help.
> {code:java}
> if (globalStreamThread != null) {
>     globalStreamThread.setUncaughtExceptionHandler((t, e) -> { }
>     );
> }
> {code}



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