Tom van der Woerdt created CASSANDRA-13055:
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Summary: DoS by StreamReceiveTask, during incremental repair
Key: CASSANDRA-13055
URL: https://issues.apache.org/jira/browse/CASSANDRA-13055
Project: Cassandra
Issue Type: Bug
Reporter: Tom van der Woerdt
There's no limit on how many StreamReceiveTask there can be, and during an
incremental repair on a vnode cluster with high replication factors, this can
lead to thousands of conccurent StreamReceiveTask threads, effectively DoSing
the node.
I just found one of my nodes with 1000+ loadavg, caused by 1363 concurrent
StreamReceiveTask threads.
That sucks :)
I think :
* Cassandra shouldn't allow more than X concurrent StreamReceiveTask threads
* StreamReceiveTask threads should be at a lower priority, like compaction
threads
Alternative ideas welcome as well, of course.
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