[jira] [Created] (IGNITE-10771) Print troubleshooting hint when exchange latch got stucked

["Pavel Kovalenko (JIRA)" <ji...@apache.org>]

Pavel Kovalenko created IGNITE-10771:
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             Summary: Print troubleshooting hint when exchange latch got stucked
                 Key: IGNITE-10771
                 URL: https://issues.apache.org/jira/browse/IGNITE-10771
             Project: Ignite
          Issue Type: Improvement
          Components: cache
    Affects Versions: 2.5
            Reporter: Pavel Kovalenko
             Fix For: 2.8


Sometimes users face with a problem when exchange latch can't be completed:
{noformat}
2018-12-12 07:07:57:563 [exchange-worker-#42] WARN 
o.a.i.i.p.c.d.d.p.GridDhtPartitionsExchangeFuture:488 - Unable to await 
partitions release latch within timeout: ClientLatch 
[coordinator=ZookeeperClusterNode [id=6b9fc6e4-5b6a-4a98-be4d-6bc1aa5c014c, 
addrs=[172.17.0.1, 10.0.230.117, 0:0:0:0:0:0:0:1%lo, 127.0.0.1], order=3, 
loc=false, client=false], ackSent=true, super=CompletableLatch [id=exchange, 
topVer=AffinityTopologyVersion [topVer=45, minorTopVer=1]]] 
{noformat}
It may indicate that some node in a cluster can' t finish partitions release (finish all ongoing operations at the previous topology version) or it can be silent network problem.
We should print to log a hint how to troubleshoot it to reduce the number of questions about such problem.





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