Aleksey Yeschenko created CASSANDRA-9554:
--------------------------------------------
Summary: Avoid digest mismatch storm on upgade to 3.0
Key: CASSANDRA-9554
URL: https://issues.apache.org/jira/browse/CASSANDRA-9554
Project: Cassandra
Issue Type: Bug
Reporter: Aleksey Yeschenko
Assignee: Tyler Hobbs
Fix For: 3.0 beta 1
CASSANDRA-8099, in {{UnfilteredRowIterators.digest()}}:
{code}
// TODO: we're not computing digest the same way that old nodes. This
// means we'll have digest mismatches during upgrade. We should pass
the messaging version of
// the node this is for (which might mean computing the digest last,
and won't work
// for schema (where we announce the version through gossip to
everyone))
{code}
In a mixed 2.1(2.2) - 3.0 clusters, we need to calculate both digest at the
same time and keep both results, and send the appropriate one, depending on
receiving nodes' messaging versions. Do that until
{{MessagingService.allNodesAtLeast30()}} is true (this is not unprecedented).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
