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From "Kumar Gaurav (JIRA)" <>
Subject [jira] [Commented] (STORM-418) using storm kafka spout doesn't scale when increasing topic partition
Date Thu, 24 Jul 2014 06:18:40 GMT


Kumar Gaurav commented on STORM-418:

Hi Varun,

yes, we increased spout parallelism along with kafka topic partition increase. The message
size we are using for this testing was 80-85 bytes.

Let me know if you need any more details.


> using storm kafka spout doesn't scale when increasing topic partition
> ---------------------------------------------------------------------
>                 Key: STORM-418
>                 URL:
>             Project: Apache Storm (Incubating)
>          Issue Type: Bug
>    Affects Versions: 0.9.2-incubating
>         Environment: EC2 c3.8x large instances for supervisor and kafka- running
Amazon Linux 64 bit version OS.
> Kafka is using 4 EBS drives of 4000 IOPS of size 150 GB each.
>            Reporter: Kumar Gaurav
>              Labels: performance
> We are running a topology of kafka spout + single bolt on a single supervisor machine.
> Bolt functionality is limited to log parsed data from spout only.
> When Trying to consume same type of data by different topics using varying topic partitions
topology throughput remain same in order of 70000 msg/sec.
> However, when multiple spout instances are used in same topology , we were able to increase
topology throughput to more than 100,000 msg/sec.
>  We have tried to increase kafka topic partition from 8 to 200, however topology throughput
remains same for sinlge spout instance.

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