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https://issues.apache.org/jira/browse/STORM-2994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16403384#comment-16403384
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Rui Abreu commented on STORM-2994:
----------------------------------
Hello,
I've created [https://github.com/apache/storm/pull/2593] for this. Unit tests
were missing and I'm adding them.
I'll have limited access to internet for the next days so I'll pick this up
again as soon as possible
> KafkaSpout consumes messages but doesn't commit offsets
> -------------------------------------------------------
>
> Key: STORM-2994
> URL: https://issues.apache.org/jira/browse/STORM-2994
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-kafka-client
> Affects Versions: 2.0.0, 1.1.0, 1.1.2, 1.2.1
> Reporter: Rui Abreu
> Assignee: Rui Abreu
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> A topology that consumes from two different Kafka clusters: 0.10.1.1 and
> 0.10.2.1.
> Spouts consuming from 0.10.2.1 have a low lag (and regularly commit offsets)
> The Spout that consumes from 0.10.1.1 exhibits either:
> 1- Unknown lag
> 2- Lag that increments as the Spout reads messages from Kafka
>
> In DEBUG, Offset manager logs: "topic-partition has NO offsets ready to be
> committed", despite continuing to consume messages.
> Several configuration tweaks were tried, including setting maxRetries to 1,
> in case messages with a lower offset were being retried (logs didn't show it,
> though)
> offsetCommitPeriodMs was also lowered to no avail.
> The only configuration that works is to have
> ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG=true, but this is undesired since
> we lose processing guarantees.
>
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