GitHub user amethystic opened a pull request:
https://github.com/apache/kafka/pull/2045
Fix for kafka-4295: kafka-console-consumer.sh does not delete the temporary
group in zookeeper
Since consumer stop logic and zk node removal code are in separate threads,
so when two threads execute in an interleaving manner, persistent node
'/consumers/<consumer-group>' might not be removed for those console consumer
groups which do not specify "group.id". This will pollute Zookeeper with lots
of inactive console consumer offset information.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/amethystic/kafka
kafka-4295-consoleconsumer_failed_remove_zknodes
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2045.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 #2045
----
commit 95779d7d509c012e9e3d1931fc3b6fd465075513
Author: huxi <h...@zhenrongbao.com>
Date: 2016-10-20T09:03:31Z
Fix for kafka-4295: kafka-console-consumer.sh does not delete the temporary
group in zookeeper
Since consumer stop logic and zk node removal code are in separate threads,
so when two threads execute in an interleaving manner, persistent node
'/consumers/<consumer-group>' might not be removed for those console consumer
groups which do not specify "group.id". This will pollute Zookeeper with lots
of inactive console consumer offset information.
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