Hi. The input stream is kafka and samza is running on mesos using this 
framework  https://github.com/Banno/samza-mesos  
Samza version - 0.12. Sorry didn't understand this question: "Is the container 
able to keep up with its inputs?" What do you mean keep up with its inputs?



>Пятница, 30 июня 2017, 2:42 +03:00 от Jacob Maes <jacob.m...@gmail.com>:
>
>Hey Evgeny,
>
>We haven't seen this with our jobs, but here are some thoughts and
>questions for you to consider.
>
>Is the container able to keep up with its inputs? The further behind, the
>more it will fill buffers.
>
>Samza has one buffer, which is controlled by configs
>< 
>http://samza.apache.org/learn/documentation/0.13/jobs/configuration-table.html 
>>
>systems.system-name.samza.fetch.threshold
>or
>systems.system-name.samza.fetch.threshold.bytes
>
>Newer kafka consumer clients have their own NIO buffers controlled by a
>`fetch.max.bytes` config, though that wouldn't explain why you see so many
>IncomingMessageEnvelopes.
>
>What version of Samza is the job using?
>
>Anything unique about the inputs or configuration?
>
>-Jake
>
>On Thu, Jun 29, 2017 at 4:23 PM, Evgeny < smy...@mail.ru.invalid > wrote:
>
>>
>> Hello. Heap size of running samza container is about 7 Gb and there are a
>> huge numbers of  IncomingMessageEnvelope as unreachable objects in thread
>> dump. What's the reason of this? It's just a samza task with empty process
>> method.
>>
>>
>>
>>
>>

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