Brandon Williams created CASSANDRA-10366:
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Summary: Added gossip states can shadow older unseen states
Key: CASSANDRA-10366
URL: https://issues.apache.org/jira/browse/CASSANDRA-10366
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Brandon Williams
Assignee: Brandon Williams
Priority: Critical
Fix For: 2.0.17, 3.0.0 rc1, 2.1.10, 2.2.2
In CASSANDRA-6135 we added cloneWithHigherVersion to ensure that if another
thread added states to gossip while we were notifying we would increase our
version to ensure the existing states wouldn't get shadowed. This however, was
not entirely perfect since it's possible that after the clone, but before the
addition another thread will insert an even newer state, thus shadowing the
others. A common case (of this rare one) is when STATUS and TOKENS are added a
bit later in SS.setGossipTokens, where something in another thread injects a
new state (likely SEVERITY) just before the addition after the clone.
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