[jira] [Created] (CASSANDRA-5669) ITC.close() resets peer msg version, causes connection thrashing in ec2 during upgrade

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

Jason Brown created CASSANDRA-5669:
--------------------------------------

             Summary: ITC.close() resets peer msg version, causes connection thrashing in ec2 during upgrade
                 Key: CASSANDRA-5669
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5669
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.2.5
            Reporter: Jason Brown
            Assignee: Jason Brown
            Priority: Minor
             Fix For: 1.2.6, 2.0 beta 1


While debugging the upgrading scenario described in CASSANDRA-5660, I discovered the ITC.close() will reset the message protocol version of a peer node that disconnects. CASSANDRA-5660 has a full description of the upgrade path, but basically the Ec2MultiRegionSnitch will close connections on the publicIP addr to reconnect on the privateIp, and this causes ITC to drop the message protocol version of previously known nodes. I think we want to hang onto that version so that when the newer node (re-)connects to the lower node version, it passes the correct protocol version rather than the current version (too high for the older node),the connection attempt getting dropped, and going through the dance again.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira