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Already on GitHub? Sign in to your account should catch and log all errors, not just Exception? #13718

merged 1 commit into from Sep 23, 2015


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mikemccand commented Sep 22, 2015

Still digging on #13487 ... and I think it's unlikely this is the cause ...

ThreadPool.scheduleWithFixedDelay wraps the incoming command with a LoggingRunnable which runs the command, but catching, suppressing and logging any exceptions. This is important because the JDK's ScheduledThreadPoolExecutor.schedulWithFixedDelay will stop executing the task if an unhandled exception is hit.

But it only catches Exception ... I think maybe it should instead catch Throwable, so that e.g. AssertionError is also logged?

It's remotely possible this test failure is happening because some bad exception (subclassing Error) was hit and the thread is no longer checking for inactive indices ... but then I think the JDK would have sent that exception to stderr, so this is probably not it.


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nik9000 commented Sep 22, 2015

Makes sense to me. At the root of a Runnable is the one place I've always excused catching Throwable but maybe someone with a more nuanced opinion than I can comment?


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dakrone commented Sep 22, 2015


mikemccand pushed a commit that referenced this pull request Sep 23, 2015 should catch and log all errors, not just Exception
@mikemccand mikemccand merged commit 4fb6386 into elastic:master Sep 23, 2015
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@clintongormley clintongormley added v2.0.0-rc1 and removed v2.0.0 labels Oct 7, 2015
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