Cyril Scetbon created CASSANDRA-6614:
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Summary: 2 hours loop flushing+compacting
system/{schema_keyspaces,schema_columnfamilies,schema_columns} when upgrading
Key: CASSANDRA-6614
URL: https://issues.apache.org/jira/browse/CASSANDRA-6614
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: ubuntu 12.04
Reporter: Cyril Scetbon
It happens when we upgrade one node to 1.2.13 on a 1.2.2 cluster
see http://pastebin.com/YZKUQLXz
If I grep for only InternalResponseStage logs I get
http://pastebin.com/htnXZCiT which always displays same account of ops and
serialized/live bytes per column family.
When I upgrade one node from 1.2.2 to 1.2.13, for 2h I get the previous
messages with a raise of CPU (as it flushes and compacts continually) on all
nodes
http://picpaste.com/pics/Screen_Shot_2014-01-24_at_09.18.50-ggcCDVqd.1390551670.png
After that, everything is fine and I can upgrade other nodes without any raise
of cpus load. when I start the upgrade, the more nodes I upgrade at the same
time (at the beginning), the higher the cpu load is
http://picpaste.com/pics/Screen_Shot_2014-01-23_at_17.45.56-I3fdEQ2T.1390552036.png
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