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https://issues.apache.org/jira/browse/KAFKA-19724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18021595#comment-18021595
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Mikołaj Bul commented on KAFKA-19724:
-------------------------------------
Hi [~fatihcelik], thanks for your interest in solving the issue.
The problem I see is that {{GlobalStreamThread}} lacks handling for {{Error}}
instances (e.g. {{ExceptionInInitializerError}} or
{{{}UnsatisfiedLinkError{}}}). They aren't caught in
{{streamsUncaughtExceptionHandler}} and propagate to
{{{}Thread.UncaughtExceptionHandler{}}}, which might be a no-op. As a result
the global thread can die silently.
Let's wait for [~mjsax]'s opinion, but I think it would be possible to handle
it by implementing a {{Thread.UncaughtExceptionHandler}} for
{{{}globalStreamThread{}}}, which logs the error and calls
{{{}closeToError(){}}}, so that the stream can transition to {{ERROR}} state.
> 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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