Minh Do created CASSANDRA-6702:
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Summary: Upgrading node uses the wrong port in gossiping
Key: CASSANDRA-6702
URL: https://issues.apache.org/jira/browse/CASSANDRA-6702
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: 1.1.7, AWS, Ec2MultiRegionSnitch
Reporter: Minh Do
Priority: Minor
Fix For: 1.2.15
When upgrading a node in 1.1.7 (or 1.1.11) cluster to 1.2.15 and inspecting the
gossip information on port/Ip, I could see that the upgrading node (1.2
version) communicates to one other node in the same region using Public IP and
non-encrypted port.
For the rest, the upgrading node uses the correct ports and IPs to communicate
in this manner:
Same region: private IP and non-encrypted port
and
Different region: public IP and encrypted port
Because there is one node like this (or probably 2 max), we have to modify
Security Group to allow the new traffics.
Without modifying the SG, the 95th and 99th latencies for both reads and writes
in the cluster are very bad (due to RPC timeout). Inspecting closer, that
upgraded node (1.2 node) is contributing to all of the high latencies whenever
it acts as a coordinator node.
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