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From "Jaydeepkumar Chovatia (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-13562) nodes in cluster gets into split-brain mode
Date Tue, 30 May 2017 18:38:04 GMT
Jaydeepkumar Chovatia created CASSANDRA-13562:
-------------------------------------------------

             Summary: nodes in cluster gets into split-brain mode
                 Key: CASSANDRA-13562
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13562
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Jaydeepkumar Chovatia
             Fix For: 3.0.x


We have seen nodes in Cassandra (3.0.11) ring gets into split-brain somehow. We don't know
exact reproducible steps but here is our observation:

Let's assume we have 5 node cluster n1,n2,n3,n4,n5. In this bug when do nodetool status on
each node then each one has different view of DN node

e.g.
n1 sees n3 as DN and other nodes are UN
n3 sees n4 as DN and other nodes are UN
n4 sees n5 as DN and other nodes are UN and so on...

One thing we have observed is once n/w link is broken and restored then sometimes nodes go
into this split-brain mode but we still don't have exact reproducible steps.

Please let us know if I am missing anything specific here.



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