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https://issues.apache.org/jira/browse/KAFKA-4767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15871783#comment-15871783
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Ismael Juma commented on KAFKA-4767:
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[~bgedik], `this.sender.forceClose();` is "some call to tell myThread to finish
up immediately" as per your terminology. And we join again after that. So, it
sounds like the only thing missing is the `interrupt` calls.
> KafkaProducer is not joining its IO thread properly
> ---------------------------------------------------
>
> Key: KAFKA-4767
> URL: https://issues.apache.org/jira/browse/KAFKA-4767
> Project: Kafka
> Issue Type: Bug
> Components: producer
> Affects Versions: 0.11.0.0
> Reporter: Buğra Gedik
> Priority: Minor
>
> The {{KafkaProducer}} is not properly joining the thread it creates. The code
> is like this:
> {code}
> try {
> this.ioThread.join(timeUnit.toMillis(timeout));
> } catch (InterruptedException t) {
> firstException.compareAndSet(null, t);
> log.error("Interrupted while joining ioThread", t);
> }
> {code}
> If the code is interrupted while performing the join, it will end up leaving
> the io thread running. The correct way of handling this is a follows:
> {code}
> try {
> this.ioThread.join(timeUnit.toMillis(timeout));
> } catch (InterruptedException t) {
> // propagate the interrupt
> this.ioThread.interrupt();
> try {
> this.ioThread.join();
> } catch (InterruptedException t) {
> firstException.compareAndSet(null, t);
> log.error("Interrupted while joining ioThread", t);
> } finally {
> // make sure we maintain the interrupted status
> Thread.currentThread.interrupt();
> }
> }
> {code}
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