GitHub user becketqin opened a pull request:
https://github.com/apache/kafka/pull/402
Improve ISR change propagation.
The patch has two changes:
1. fixed a bug in controller that it sends UpdateMetadataRequest of all the
partitions in the cluster.
2. Uses the following rules to propagate ISR change: 1) if there are ISR
changes pending propagation and the last ISR change is more than five seconds
ago, propagate the changes. 2) if there is ISR change at T in the recent five
seconds, delay the propagation until T + 5s. 3) if the last propagation is more
than 1 min ago, ignore rule No.2 and propagate ISR change if there are changes
pending propagation.
This algorithm avoids a fixed configuration of ISR propagation interval as
we discussed about in KIP-29.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/becketqin/kafka KAFKA-2722
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/402.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 #402
----
commit 13892856d806183536657f0c3ea2aa63b1f1c4f2
Author: Jiangjie Qin <[email protected]>
Date: 2015-11-02T01:26:27Z
Improve ISR change propagation.
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
