Jason Brown created CASSANDRA-5669:
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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.
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