Tao Wang created FLINK-6174:
-------------------------------
Summary: Introduce a leader election service in yarn mode to make
JobManager always available
Key: FLINK-6174
URL: https://issues.apache.org/jira/browse/FLINK-6174
Project: Flink
Issue Type: Improvement
Components: JobManager
Reporter: Tao Wang
Assignee: Tao Wang
Now in yarn mode, if we use zookeeper as high availability choice, it will
create a election service to get a leader depending on zookeeper election.
When zookeeper leader crashes or the connection between JobManager and
zookeeper instance was broken, JobManager's leadership will be revoked and send
a Disconnect message to TaskManager, which will cancle all running tasks and
make them waiting connection rebuild between JM and ZK.
In yarn mode, we have one and only JobManager(AM) in same time, and it should
be alwasy leader instead of elected through zookeeper. We can introduce a new
leader election service in yarn mode to achive that.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
