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https://issues.apache.org/jira/browse/IGNITE-9144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Evgenii Zagumennov reassigned IGNITE-9144:
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Assignee: Evgenii Zagumennov
> A client node leaving a grid may trigger the wrong message about coordinator
> change in the logs
> -----------------------------------------------------------------------------------------------
>
> Key: IGNITE-9144
> URL: https://issues.apache.org/jira/browse/IGNITE-9144
> Project: Ignite
> Issue Type: Bug
> Reporter: Ivan Artukhov
> Assignee: Evgenii Zagumennov
> Priority: Major
>
> The issue was introduced by https://issues.apache.org/jira/browse/IGNITE-8738.
> Suppose we have a grid with X server nodes and Y client nodes. Server nodes
> are restarted periodically while client nodes are left untouched. In this
> case *order* of current coordinator might be greater than *order* of any
> client node. Then when some client node leaves the grid, we will erroneously
> print the *Coordinator changed* message with *client* node being the previous
> coordinator. E.g.:
> {noformat}
> [2018-07-19 14:55:28,897][INFO ][disco-event-worker-#61] Node left topology:
> TcpDiscoveryNode [id=7240957f-a51b-452d-bfc8-420e8ef9ea68, addrs=[127.0.0.1,
> 172.17.0.1, 172.25.1.15], sockAddrs=[/172.17.0.1:0, /127.0.0.1:0,
> lab15.gridgain.local/172.25.1.15:0], discPort=0, order=16, intOrder=11,
> lastExchangeTime=1532001260398, loc=false, ver=2.5.1#20180717-sha1:80e51c80,
> isClient=true]
> [2018-07-19 14:55:28,899][INFO ][disco-event-worker-#61] Topology snapshot
> [ver=27, servers=3, clients=4, CPUs=96, offheap=260.0GB, heap=56.0GB]
> [2018-07-19 14:55:28,899][INFO ][disco-event-worker-#61] Coordinator changed
> [prev=TcpDiscoveryNode [id=7240957f-a51b-452d-bfc8-420e8ef9ea68,
> addrs=[127.0.0.1, 172.17.0.1, 172.25.1.15], sockAddrs=[/172.17.0.1:0,
> /127.0.0.1:0, lab15.gridgain.local/172.25.1.15:0], discPort=0, order=16,
> intOrder=11, lastExchangeTime=1532001260398, loc=false,
> ver=2.5.1#20180717-sha1:80e51c80, isClient=true], cur=TcpDiscoveryNode
> [id=760fd8f2-b9d7-4953-aa86-3954c05c9feb, addrs=[127.0.0.1, 172.17.0.1,
> 172.25.1.21], sockAddrs=[/172.17.0.1:47500,
> lab21.gridgain.local/172.25.1.21:47500, /127.0.0.1:47500], discPort=47500,
> order=21, intOrder=15, lastExchangeTime=1532001260428, loc=false,
> ver=2.5.1#20180717-sha1:80e51c80, isClient=false]]
> [2018-07-19 14:55:28,899][INFO ][disco-event-worker-#61] ^-- Node
> [id=22B15E97-9944-48B5-A473-5C64E75A4D5A, clusterState=ACTIVE]
> [2018-07-19 14:55:28,899][INFO ][disco-event-worker-#61] ^-- Baseline
> [id=6, size=3, online=3, offline=0]
> [2018-07-19 14:55:28,899][INFO ][disco-event-worker-#61] Data Regions
> Configured:
> [2018-07-19 14:55:28,900][INFO ][disco-event-worker-#61] ^-- default
> [initSize=256.0 MiB, maxSize=60.0 GiB, persistenceEnabled=true]
> {noformat}
> The *Coordinator changed* message should not be here because in fact the
> coordinator was not changed.
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