Neha Narkhede created KAFKA-923:
-----------------------------------
Summary: Improve controller failover latency
Key: KAFKA-923
URL: https://issues.apache.org/jira/browse/KAFKA-923
Project: Kafka
Issue Type: Improvement
Components: controller
Affects Versions: 0.8
Reporter: Neha Narkhede
Assignee: Neha Narkhede
Priority: Critical
During controller failover, we do the following things -
1. Increment controller epoch
2. Initialize controller context
3. Initialize replica state machine
4. Initialize partition state machine
During step 2 above, we read the information of all topics and partitions, the
replica assignments and leadership information. During step 3 and 4, we re-read
some of this information from zookeeper. Since the zookeeper reads are
proportional to the number of topics and the reads are serial, it is important
to optimize this. The zookeeper reads in steps 3 and 4 are not required.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
