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From Damian Guy <damian....@gmail.com>
Subject Re: getting intermittent TimeoutException at producer side in streams application
Date Mon, 19 Dec 2016 12:13:03 GMT
Hi Sachin,

This would usually indicate that may indicate that there is a connectivity
issue with the brokers. You would need to correlate the logs etc on the
brokers with the streams logs to try and understand what is happening.


On Sun, 18 Dec 2016 at 07:26 Sachin Mittal <sjmittal@gmail.com> wrote:

> Hi all,
> I have a simple stream application pipeline
> src.filter.aggragteByKey.mapValues.forEach
> From time to time I get the following exception:
> Error sending record to topic test-stream-key-table-changelog
> org.apache.kafka.common.errors.TimeoutException: Batch containing 2
> record(s) expired due to timeout while requesting metadata from brokers for
> test-stream-key-table-changelog-0
> What could be causing the issue?
> I investigated a bit and saw none of the stage takes a long time. Even in
> forEach stage where we commit the output to external db takes sub 100 ms in
> worst case.
> I have right now done a workaround of
> props.put(ProducerConfig.REQUEST_TIMEOUT_MS_CONFIG, 1800000);
> Increased the default timeout from 30 seconds to 3 minutes.
> However to dig deep into the issue where can the problem be?
> Is it that some stage is taking beyond 30 seconds to execute. Or is it some
> network issue where it is taking a long time to connect to broker itself?
> Any logging that I can enable at the streams side to get more complete
> stacktraces?
> Note that issue occurs in bunches. Then everything works fine for a while
> then these exceptions come in bunch and then it works fine for sometime
> then again exceptions and so on.
> Note that my version is kafka_2.10-
> Thanks
> Sachin

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