Sean Bridges created CASSANDRA-8177:
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Summary: sequential repair is much more expensive than parallel
repair
Key: CASSANDRA-8177
URL: https://issues.apache.org/jira/browse/CASSANDRA-8177
Project: Cassandra
Issue Type: Bug
Reporter: Sean Bridges
This is with 2.0.10
The attached graph shows io read/write throughput (as measured with iostat)
when doing repairs.
The large hump on the left is a sequential repair of one node. The two much
smaller peaks on the right are parallel repairs.
This is a 3 node cluster using vnodes (I know vnodes on small clusters isn't
recommended). Cassandra reports load of 40 gigs.
We noticed a similar problem with a larger cluster.
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