[jira] [Created] (CASSANDRA-14801) calculatePendingRanges no longer safe for multiple adjacent range movements

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

Benedict created CASSANDRA-14801:
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             Summary: calculatePendingRanges no longer safe for multiple adjacent range movements
                 Key: CASSANDRA-14801
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14801
             Project: Cassandra
          Issue Type: Bug
          Components: Coordination, Distributed Metadata
            Reporter: Benedict
             Fix For: 4.0


Correctness depended upon the narrowing to a {{Set<InetAddressAndport>}}, which we no longer do - we maintain a collection of all {{Replica}}.  Our {{RangesAtEndpoint}} collection built by {{getPendingRanges}} can as a result contain the same endpoint multiple times; and our {{EndpointsForToken}} obtained by {{TokenMetadata.pendingEndpointsFor}} may fail to be constructed, resulting in cluster-wide failures for writes to the affected token ranges for the duration of the range movement.




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