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From Jungtaek Lim <kabh...@gmail.com>
Subject Re: Topology gets stuck
Date Thu, 09 Jun 2016 14:10:38 GMT
Nitin,

Could you check your configuration for message timeout seconds to see it's
set to enough amount of time, and also check there're failing tuples at
that time?

Thanks,
Jungtaek Lim (HeartSaVioR)

2016년 6월 9일 (목) 오후 11:05, Nitin Gupta <Nitin.Gupta@e-zest.in>님이 작성:

> Thanks Abhishek for the guidance.
>
>
>
> As I mentioned the Bolt processes the same set of messages again and again
> and the consumer offset doesn’t move ahead.
>
> It processes around 100 messages , stops for few minutes (around 3-5
> minutes)and then again processes these messages. This cycle keeps repeating
> but the consumer offset in the zookeeper is not updated.
>
>
>
> I will check if it is possible to move to a new version of storm as the
> system is already in production.
>
>
>
> Thanks & Regards,
>
> Nitin Gupta
>
>
>
> *From:* Abhishek Agarwal [mailto:abhishcool@gmail.com]
> *Sent:* Thursday, June 09, 2016 7:26 PM
>
>
> *To:* user@storm.apache.org
> *Subject:* Re: Topology gets stuck
>
>
>
> If spout is blocked only for a short duration, it may be due to slow bolt.
> If it remains blocked forever, there is a possibility of deadlock. you can
> check out STORM-1027
>
>
>
> On Thu, Jun 9, 2016 at 6:48 PM, Nitin Gupta <Nitin.Gupta@e-zest.in> wrote:
>
> Hi Abhishek,
>
>
>
> I am using version 0.9.4 .
>
>
>
> From the log it seems the topology keeps processing a fix set of messages
> from the last offset it got stuck . Looks it is equal to the max spout
> pending messages. It processes these messages but doesn’t update the
> zookeeper with the processed offset. It then stop for a few minutes and
> repeats the same process.
>
>
>
> The rate at which the messages are being written is very high . So the lag
> is very high . Not sure if the KafkaSpout stops processing after a specific
> number of messages pending to be processed.
>
>
>
> Thanks & Regards,
>
> Nitin Gupta
>
>
>
> *From:* Abhishek Agarwal [mailto:abhishcool@gmail.com]
> *Sent:* Thursday, June 09, 2016 6:40 PM
> *To:* user@storm.apache.org
> *Subject:* Re: Topology gets stuck
>
>
>
> check the thread dump of your worker process after it gets stuck. which
> version do you use?
>
>
>
> On Thu, Jun 9, 2016 at 6:36 PM, Nitin Gupta <Nitin.Gupta@e-zest.in> wrote:
>
> Dear All,
>
>
>
> I am using a Kafkaspout to process messages from Kafka. The bolt takes
> around 700 milliseconds to process the message.
>
> I observe the topology worked fine for a few hours but once the number of
> pending messages increases it stops to update the consumer offset in the
> zookeeper.
>
>
>
> I am facing this problem from quite few days. Any help will be highly
> appreciated.
>
>
>
> Thanks & Regards,
>
> Nitin Gupta
>
>
>
>
>
>
>
> --
>
> Regards,
> Abhishek Agarwal
>
>
>
>
>
>
>
> --
>
> Regards,
> Abhishek Agarwal
>
>
>

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