[
https://issues.apache.org/jira/browse/KAFKA-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15037341#comment-15037341
]
ASF GitHub Bot commented on KAFKA-2942:
---------------------------------------
GitHub user hachikuji opened a pull request:
https://github.com/apache/kafka/pull/623
KAFKA-2942: inadvertent auto-commit when pre-fetching can cause message loss
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hachikuji/kafka KAFKA-2942
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/623.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 #623
----
commit 01872110576a82f851e791422f5fec3f797711e7
Author: Jason Gustafson <ja...@confluent.io>
Date: 2015-12-03T06:18:01Z
KAFKA-2942: inadvertent auto-commit when pre-fetching can cause message loss
----
> Inadvertent auto-commit when pre-fetching can cause message loss
> ----------------------------------------------------------------
>
> Key: KAFKA-2942
> URL: https://issues.apache.org/jira/browse/KAFKA-2942
> Project: Kafka
> Issue Type: Bug
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
>
> Before returning from KafkaConsumer.poll(), we update the consumed position
> and invoke poll(0) to send new fetches. In doing so, it is possible that an
> auto-commit is triggered which would commit the updated offsets which hasn't
> yet been returned. If the process then crashes before consuming the messages,
> there would be a gap in the delivery.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
