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https://issues.apache.org/jira/browse/CASSANDRA-9318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14604763#comment-14604763
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Jonathan Ellis edited comment on CASSANDRA-9318 at 6/28/15 4:31 PM:
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Hinting is better than leaving things in an unknown state but it's not
something we should opt users into if we have a better option, since it
basically turns the write into CL.ANY.
I think you're [Benedict] overselling how scary it is to stop reading new
requests until we can free up some memory from MS. We're not dropping
connections. We're just imposing some flow control. Which is something that
already happens at different levels anyway.
was (Author: jbellis):
Hinting is better than leaving things in an unknown state but it's not
something we should opt users into if we have a better option, since it
basically turns the write into CL.ANY.
I think you're overselling how scary it is to stop reading new requests until
we can free up some memory from MS. We're not dropping connections. We're
just imposing some flow control. Which is something that already happens at
different levels anyway.
> 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: 2.1.x, 2.2.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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