Rolling upgrades from 0.7 to 0.8 not possible
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Key: CASSANDRA-3166
URL: https://issues.apache.org/jira/browse/CASSANDRA-3166
Project: Cassandra
Issue Type: Bug
Affects Versions: 0.8.4, 0.7.9, 0.7.5
Reporter: Marcus Eriksson
We are in the progress of upgrading to 0.8 and we need to do a rolling upgrade,
this fails miserably and it is reproducible;
1. set up a 3 node cluster with 0.7.9 and rf=3, read and write, QUORUM
2. upgrade one of the nodes (i upped a seednode, not sure if that is important)
3. continue reading/writing
4. see logs on the 0.7 node fill up with: INFO 12:36:08,240 Received connection
from newer protocol version. Ignorning message.
it does work if i start the 0.7.9 nodes *after* the 0.8.4 node which makes me
think that it matters if it is the 0.8 node connecting to the 0.7 nodes or the
other way round.
Debug logging on the 0.8 node shows:
/var/log/cassandra/system.log.9:DEBUG [pool-2-thread-82] 2011-09-09
11:55:06,067 StorageProxy.java (line 178) Write timeout
java.util.concurrent.TimeoutException for one (or more) of:
/var/log/cassandra/system.log.9:DEBUG [pool-2-thread-76] 2011-09-09
11:55:06,067 StorageProxy.java (line 584) Read timeout:
java.util.concurrent.TimeoutException: Operation timed out - received only 1
responses from /193.182.3.92, .
nothing except for the "newer protocol version..." in the 0.7-logs
i will continue to look at this issue but if anyone has a quick patch, let me
know
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