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Posted to dev@kafka.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/12/03 09:24:59 UTC
[jira] [Commented] (KAFKA-4476) Kafka Streams gets stuck if
metadata is missing
[ https://issues.apache.org/jira/browse/KAFKA-4476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15717780#comment-15717780 ]
ASF GitHub Bot commented on KAFKA-4476:
---------------------------------------
GitHub user mjsax opened a pull request:
https://github.com/apache/kafka/pull/2209
KAFKA-4476: Kafka Streams gets stuck if metadata is missing
- break loop in StreamPartitionAssigner.assign() in case partition metadata is missing
- fit state transition issue (follow up to KAFKA-3637: Add method that checks if streams are initialised)
- some test improvements
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mjsax/kafka kafka-4476-stuck-on-missing-metadata
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2209.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2209
----
commit 77598544bc5c2f9d0c967bcdda392c701ebacff7
Author: Matthias J. Sax <ma...@confluent.io>
Date: 2016-12-03T09:19:34Z
KAFKA-4476: Kafka Streams gets stuck if metadata is missing
- break loop in StreamPartitionAssigner.assign() in case partition metadata is missing
- fit state transition issue (follow up to KAFKA-3637: Add method that checks if streams are initialised)
- some test improvements
----
> Kafka Streams gets stuck if metadata is missing
> -----------------------------------------------
>
> Key: KAFKA-4476
> URL: https://issues.apache.org/jira/browse/KAFKA-4476
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Matthias J. Sax
> Assignee: Matthias J. Sax
> Priority: Critical
>
> When a Kafka Streams application gets started for the first time, it can happen that some topic metadata is missing when {{StreamPartitionAssigner#assign()}} is called on the group leader instance. This can result in an infinite loop within {{StreamPartitionAssigner#assign()}}. This issue was detected by {{ResetIntegrationTest}} that does have a transient timeout failure (c.f. https://issues.apache.org/jira/browse/KAFKA-4058 -- this issue was re-opened multiple times as the problem was expected to be in the test -- however, that is not the case).
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