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Jonathan Ellis commented on CASSANDRA-9318:
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There's a lot of overlap, but bounding request count + size is definitely
simpler than trying to bound the heap used more generally.
I think the former is simple enough, and the problem it solves serious enough
(nodes falling over OOM and/or dropping lots of requests in attempt to load
shed) that we should do it in 2.1 if possible. This is a big pain point for C*
users in the real world.
> Bound the number of in-flight requests at the coordinator
> ---------------------------------------------------------
>
> Key: CASSANDRA-9318
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9318
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Ariel Weisberg
> Assignee: Ariel Weisberg
> Fix For: 3.x
>
>
> It's possible to somewhat bound the amount of load accepted into the cluster
> by bounding the number of in-flight requests and request bytes.
> An implementation might do something like track the number of outstanding
> bytes and requests and if it reaches a high watermark disable read on client
> connections until it goes back below some low watermark.
> Need to make sure that disabling read on the client connection won't
> introduce other issues.
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