GitHub user vahidhashemian opened a pull request:
https://github.com/apache/kafka/pull/1363
KAFKA-3664: Commit unsubscribed partitions of the new consumer on a
subscription change
When users are using group management, if they call consumer.subscribe() to
change the subscription, the removed subscriptions will be immediately removed
and their offset will not be committed.
Also the revoked partitions passed to the
ConsumerRebalanceListener.onPartitionsRevoked() will not include those
partitions.
This pull request fixes this issue by following the design suggested by
@becketqin
[here](https://issues.apache.org/jira/browse/KAFKA-3664?focusedCommentId=15274470&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15274470).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vahidhashemian/kafka KAFKA-3664
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/1363.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 #1363
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