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Jonathan Ellis resolved CASSANDRA-6619. --------------------------------------- Resolution: Fixed Reviewer: Jonathan Ellis (was: Jason Brown) Changed the property name to cassandra.default_messaging_version and commited. > Race condition issue during upgrading 1.1 to 1.2 > ------------------------------------------------ > > Key: CASSANDRA-6619 > URL: https://issues.apache.org/jira/browse/CASSANDRA-6619 > Project: Cassandra > Issue Type: Bug > Components: Core > Reporter: Minh Do > Assignee: Minh Do > Priority: Minor > Fix For: 1.2.14 > > Attachments: patch.txt > > > There is a race condition during upgrading a C* 1.1x cluster to C* 1.2. > One issue is that OutboundTCPConnection can't establish from a 1.2 node to > some 1.1x nodes. Because of this, a live cluster during the upgrading will > suffer in high read latency and be unable to fulfill some write requests. It > won't be a problem if there is a small cluster but it is a problem in a large > cluster (100+ nodes) because the upgrading process takes 10+ hours to 1+ > day(s) to complete. > Acknowledging about CASSANDRA-5692, however, it does not fully fix the issue. > We already have a patch for this and will attach shortly for feedback. -- This message was sent by Atlassian JIRA (v6.1.5#6160)