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Posted to commits@cassandra.apache.org by "Stefania (JIRA)" <ji...@apache.org> on 2016/07/04 03:19:11 UTC

[jira] [Updated] (CASSANDRA-9318) Bound the number of in-flight requests at the coordinator

     [ https://issues.apache.org/jira/browse/CASSANDRA-9318?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefania updated CASSANDRA-9318:
--------------------------------
    Attachment: 9318-3.0-nits-trailing-spaces.patch

> 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
>          Components: Local Write-Read Paths, Streaming and Messaging
>            Reporter: Ariel Weisberg
>            Assignee: Sergio Bossa
>         Attachments: 9318-3.0-nits-trailing-spaces.patch, backpressure.png, limit.btm, no_backpressure.png
>
>
> 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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