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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-11598) Add simple rpc throttling
Date Mon, 15 Sep 2014 18:57:35 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11598?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Matteo Bertozzi updated HBASE-11598:
    Attachment:     (was: HBASE-11598-v1.patch)

> Add simple rpc throttling
> -------------------------
>                 Key: HBASE-11598
>                 URL: https://issues.apache.org/jira/browse/HBASE-11598
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>             Fix For: 2.0.0
>         Attachments: HBASE-11598-v0.patch
> Add a simple version of rpc throttling.
> (by simple I mean something that requires less changes as possible to the core)
> The idea is to add a hbase:quota table to store the user/table quota information.
> Add a couple of API on the client like throttleUser() and throttleTable()
> and on the server side before executing the request we check the quota, if not an exception
is thrown.
> The quota will be per-machine. There will be a flag "QuotaScope" that will be used in
the future to specify the quota at "cluster level" instead of per machine. (A limit of 100req/min
means that each machine can execute 100req/min with a scope per-machine).
> This will be the first cut, simple solution that requires verify few changes to the core.
> Later on we can make the client aware of the ThrottlingException and deal with it in
a smarter way.
> Also we need to change a bit the RPC code to be able to yield the operation if the quota
will be 
> available not to far in the future, and avoid going back to the client for "few seconds".
> REVIEW BOARD: https://reviews.apache.org/r/23981

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