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https://issues.apache.org/jira/browse/YARN-6342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15935313#comment-15935313
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Varun Saxena commented on YARN-6342:
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[~haibochen], correct. FutureTask#run won't throw any exception.
How about fixing the other issue which I pointed out?
While stopping i.e. in NMTimelinePublisher#serviceStop we are not explicitly
stopping app related timeline clients which would mean that some of the
entities lying around in the queue may not be written...
Thoughts?
> Issues in async API of TimelineClient
> -------------------------------------
>
> Key: YARN-6342
> URL: https://issues.apache.org/jira/browse/YARN-6342
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Jian He
> Assignee: Haibo Chen
> Labels: yarn-5355-merge-blocker
>
> Found these with [~rohithsharma] while browsing the code
> - In stop: it calls shutdownNow which doens't wait for pending tasks, should
> it use shutdown instead ?
> {code}
> public void stop() {
> LOG.info("Stopping TimelineClient.");
> executor.shutdownNow();
> try {
> executor.awaitTermination(DRAIN_TIME_PERIOD, TimeUnit.MILLISECONDS);
> } catch (InterruptedException e) {
> {code}
> - In TimelineClientImpl#createRunnable:
> If any exception happens when publish one entity
> (publishWithoutBlockingOnQueue), the thread exists. I think it should try
> best effort to continue publishing the timeline entities, one failure should
> not cause all followup entities not published.
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