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https://issues.apache.org/jira/browse/IGNITE-13374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17303399#comment-17303399
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Alexander Lapin commented on IGNITE-13374:
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[~sk0x50]Could you please review the ticket?
> Initial PME hangs because of multiple blinking nodes
> ----------------------------------------------------
>
> Key: IGNITE-13374
> URL: https://issues.apache.org/jira/browse/IGNITE-13374
> Project: Ignite
> Issue Type: Bug
> Reporter: Alexander Lapin
> Assignee: Alexander Lapin
> Priority: Major
> Time Spent: 20m
> Remaining Estimate: 0h
>
> *Root cause* of the issue is a race inside GridDhtPartitionsExchangeFuture on
> client side between two processes:
> # When old coordinator fails and the new one takes over it sends
> GridDhtPartitionsSingleRequest messages to all nodes including clients to
> restore exchange results. Processing this message on client includes updating
> current coordinator reference (crd field).
> # When future receives discovery notification about old coordinator failure
> it should detect change of coordinator and send
> GridDhtPartitionsSingleMessage to new coordinator to obtain affinity. But
> updated crd field prevents client from detecting coordinator failure and
> sending SingleMessage to new coordinator which in turn leads to hanging
> client.
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