GitHub user onurkaraman opened a pull request:
https://github.com/apache/kafka/pull/4189
KAFKA-6146: minimize the number of triggers enqueuing
PreferredReplicaLeaderElection events
We currently enqueue a PreferredReplicaLeaderElection controller event in
PreferredReplicaElectionHandler's handleCreation, handleDeletion, and
handleDataChange. We can just enqueue the event upon znode creation and after
preferred replica leader election completes. The processing of this latter
enqueue will register the exist watch on PreferredReplicaElectionZNode and
perform any pending preferred replica leader election that may have occurred
between completion and registration.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/onurkaraman/kafka KAFKA-6146
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/4189.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 #4189
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commit d7087fec5ee00bd7a13ebe435905e85845aeb29f
Author: Onur Karaman <[email protected]>
Date: 2017-11-07T21:19:52Z
KAFKA-6146: minimize the number of triggers enqueuing
PreferredReplicaLeaderElection events
We currently enqueue a PreferredReplicaLeaderElection controller event in
PreferredReplicaElectionHandler's handleCreation, handleDeletion, and
handleDataChange. We can just enqueue the event upon znode creation and after
preferred replica leader election completes. The processing of this latter
enqueue will register the exist watch on PreferredReplicaElectionZNode and
perform any pending preferred replica leader election that may have occurred
between completion and registration.
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