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https://issues.apache.org/jira/browse/SAMZA-245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14070444#comment-14070444
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Chris Riccomini commented on SAMZA-245:
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bq. I'd ideally be able to set a max polling interval on a per-stream basis.
The way things work with the current patch is that the poll interval is set for
the job, but the containers only poll for "empty" stream partitions (i.e. those
for which there are no more messages available to process). If you have one
batch stream partition and one real-time stream partition, then the poll
interval will cause the real-time stream partition to be polled every 50ms
(default in the patch), while the batch stream partition will only be polled
when it becomes empty again.
> Improve SystemConsumers performance
> -----------------------------------
>
> Key: SAMZA-245
> URL: https://issues.apache.org/jira/browse/SAMZA-245
> Project: Samza
> Issue Type: Bug
> Components: container
> Affects Versions: 0.6.0
> Reporter: Chris Riccomini
> Assignee: Chris Riccomini
> Fix For: 0.8.0
>
> Attachments: SAMZA-245-1.patch, SAMZA-245-3.patch, SAMZA-245-4.patch,
> SAMZA-245.0.patch,
> org.apache.samza.test.performance.TestSamzaContainerPerformance.SAMZA-245-3.html,
> org.apache.samza.test.performance.TestSamzaContainerPerformance.master.html
>
>
> As part of SAMZA-220, a more radical patch was proposed. This patch appears
> to improve SystemConsumers' performance pretty significantly, while also
> reducing its complexity. The decision was made to move this change into the
> 0.8.0 release, rather than the 0.7.0 release, since it's a fairly risky
> change.
> This ticket is to explore updating SystemConsumers to eliminate almost all
> loops in order to increase performance in the Samza container.
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