Ivan Daschinskiy created IGNITE-13495:
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Summary: ZookeeperDiscoverySpiMBeanImpl#getCoordinator can return
invalid node as coordinator
Key: IGNITE-13495
URL: https://issues.apache.org/jira/browse/IGNITE-13495
Project: Ignite
Issue Type: Bug
Affects Versions: 2.9
Reporter: Ivan Daschinskiy
Fix For: 2.10
Due to invalid algorithm in
{{org.apache.ignite.spi.discovery.zk.internal.ZookeeperDiscoveryImpl#getCoordinator}}
sometimes invalid coordinator could be return
Consider scenarion:
1. Start server #1
2. Start client
3. Start server #2
4. Stop server #1
After this, {{ZookeeperDiscoverySpiMBeanImpl#getCoordinator}} returns as
coordinator a client, because it is the oldest node in topology.
We should rewrite
{{org.apache.ignite.spi.discovery.zk.internal.ZookeeperDiscoveryImpl#getCoordinator}}
to return *oldest server*, not any node.
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