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https://issues.apache.org/jira/browse/IGNITE-13491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17204477#comment-17204477
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Ignite TC Bot commented on IGNITE-13491:
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{panel:title=Branch: [pull/8289/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
{panel:title=Branch: [pull/8289/head] Base: [master] : New Tests
(1)|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}
{color:#00008b}Basic 1{color} [[tests
1|https://ci.ignite.apache.org/viewLog.html?buildId=5630754]]
* {color:#013220}IgniteBasicTestSuite:
IgniteTopologyPrintFormatSelfTest.checkMessageOnCoordinatorChangeTest -
PASSED{color}
{panel}
[TeamCity *--> Run :: All*
Results|https://ci.ignite.apache.org/viewLog.html?buildId=5630830&buildTypeId=IgniteTests24Java8_RunAll]
> Fix incorrect topology snapshot logger output about coordinator change.
> -----------------------------------------------------------------------
>
> Key: IGNITE-13491
> URL: https://issues.apache.org/jira/browse/IGNITE-13491
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.9
> Reporter: Ivan Daschinskiy
> Assignee: Surkov Aleksandr
> Priority: Minor
> Labels: newbie
> Fix For: 2.10
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Currently, logic in
> {{org.apache.ignite.internal.managers.discovery.GridDiscoveryManager#topologySnapshotMessage}}
> has major drawback, in condition we don't check that failed node with order
> less than oldest server node, is actually server node. So we can see invalid
> message about coordinator change, even though previous node was a client.
> Reproducer:
> 1. Start server #1
> 2. Start client
> 3. Start server #2
> 4. Stop server #2 and client
> We will see in logs of server #2 something like this:
> {{[2020-09-29 10:41:25,909][INFO
> ][disco-event-worker-#150%tcp.TcpDiscoverySpiMBeanTest2%|#150%tcp.TcpDiscoverySpiMBeanTest2%][GridDiscoveryManager]
> Coordinator changed [prev=TcpDiscoveryNode
> [id=371896fb-f612-4640-bfcd-cef6d2800001,
> consistentId=371896fb-f612-4640-bfcd-cef6d2800001, addrs=ArrayList
> [127.0.0.1], sockAddrs=HashSet [/127.0.0.1:0], discPort=0, order=2,
> intOrder=2, lastExchangeTime=1601365285287, loc=false,
> ver=2.10.0#20200929-sha1:00000000, *isClient=true*], cur=TcpDiscoveryNode
> [id=9d90f4b0-1374-4147-b7a7-d821f0000002, consistentId=127.0.0.1:47501,
> addrs=ArrayList [127.0.0.1], sockAddrs=HashSet [/127.0.0.1:47501],
> discPort=47501, order=3, intOrder=3, lastExchangeTime=1601365285900,
> loc=true, ver=2.10.0#20200929-sha1:00000000, isClient=false]]}}
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