yangwei created CASSANDRA-5216:
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             Summary: fix bug on decommission and removeNode
                 Key: CASSANDRA-5216
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5216
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.2.1
            Reporter: yangwei
             Fix For: 1.2.1


1. If one node decommissioned, the epState.isAlive is always true since it is 
DEAD_STATES in convict(). 0001 patch fixes that.
2. If we removeNode B on A,  we should put expireTime of B in 
expireTimeEndpointMap of A, otherwise the epState of B will never be removed 
from gossip entirely. 0002 patch fixes that.
3. After removeNode B, C reboots and receives epState of B. Since B is not in 
the tokenMetadata, C just wipes away B without recording B's expireTime. In 
this case, B will be always in gossip. 0003 patch fixes that.

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