Sebastian Estevez created CASSANDRA-8787:
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Summary: Decrease Default concurrent_compactors from number of CPU
Key: CASSANDRA-8787
URL: https://issues.apache.org/jira/browse/CASSANDRA-8787
Project: Cassandra
Issue Type: Improvement
Reporter: Sebastian Estevez
Currently we default concurrent_compactors to the number of avaliable CPUs
which means compactions can theoretically take over all threads and prevent
reads and writes from happening.
I'm currently seeing an extreme case of this that is caused by 6405. But, in
general, this is a bad default. We should probably default
concurrent_compactors to num_cpu to cores/2 or even cores/4.
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