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Aleksey Yeschenko resolved CASSANDRA-6614. ------------------------------------------ Resolution: Cannot Reproduce Reproduced In: 1.2.13, 1.2.12 (was: 1.2.12, 1.2.13) > 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 > Environment: ubuntu 12.04 > Reporter: Cyril Scetbon > Assignee: Ryan McGuire > > 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.1390587562.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.1390587597.png -- This message was sent by Atlassian JIRA (v6.3.4#6332)