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From: Mikhail Antonov <olorinbant@gmail.com>
Date: Thu, 21 Apr 2016 00:05:26 -0700
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Subject: Re: Allowing clients to set priorities
To: "dev@hbase.apache.org" <dev@hbase.apache.org>
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This is interesting idea. Sorry if I missed some context - what's the
primary incentive here? What's examples of those categorized thread pools?

Sounds intersecting a bit with HBASE-15136
<https://issues.apache.org/jira/browse/HBASE-15136> (deadline scheduling
for RPC requests) in the area of rpc prioritizing.

-Mikhail

On Wed, Apr 20, 2016 at 11:21 PM, Stack <stack@duboce.net> wrote:

> On Wed, Apr 20, 2016 at 1:47 PM, rahul gidwani <rahul.gidwani@gmail.com>
> wrote:
>
> > I was wondering if people would be interested in allowing the client to
> > specify priorities?  I really think we are good responsible adults and
> wont
> > abuse this feature.   :)
> >
> > This would not just be for one particular operation but all operations.
> > I'll make it feature complete.
> >
> >
> Sounds sweet.
>
> RPC passes priority in the header already IIRC.
>
> We could then purge our ugly decompose of the request just to figure what
> it is so we can prioritize based off annotation.
>
> St.Ack
>
>
>
> > As for batch operations prioirites would be at batch level.
> >
> > I know the phoenix guys would really like this feature as it would really
> > help with their indexing work.
> >
>
>
> > Eventually I think it would be nice to get to a point where we can have
> > some sort of configurable reservation system.  Where regionservers could
> > have handler groups and we could send a little bit more info with the rpc
> > call to specify the reserved set of handlers they would like to utilize.
> >
> > thanks
> > rahul
> >
>


-- 
Thanks,
Michael Antonov

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