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From "Ivan Bessonov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11574) Exchange on NodeLeft event hangs when cluster is in transition state
Date Tue, 19 Mar 2019 14:24:00 GMT
Ivan Bessonov created IGNITE-11574:
--------------------------------------

             Summary: Exchange on NodeLeft event hangs when cluster is in transition state
                 Key: IGNITE-11574
                 URL: https://issues.apache.org/jira/browse/IGNITE-11574
             Project: Ignite
          Issue Type: Bug
            Reporter: Ivan Bessonov
            Assignee: Ivan Bessonov
         Attachments: ExchangeDeadlockTest.java

The problem is in this code (GridCachePartitionExchangeManager#start0) :
{code:java}
if (cache.state().transition()) {
    if (log.isDebugEnabled())
        log.debug("Adding pending event: " + evt);

    pendingEvts.add(new PendingDiscoveryEvent(evt, cache));
}{code}
Problem occurs when "setBaseline" and "nodeLeft" events happen simultaneously (+ some undetermined
conditions).

"nodeLeft" provokes exchange, and while that exchange isn't finished "setBaseline" is invoked.
This moves cluster into a transition state and "CacheAffinityChangeMessage" from the exchange
cannot be processed properly. At the same time "setBaseline" cannot be completed before the
exchange, so we have a deadlock.

Reproducer attached.

 



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