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From rammohan ganapavarapu <rammohanga...@gmail.com>
Subject Re: outstanding requests
Date Fri, 17 Nov 2017 20:41:59 GMT
Abe,

Thanks for the  explanation and book reference, do you know how much memory
each outstanding request in a queue can take? We have enough memory so
trying to see if i can increase the global limit to do that i need to know
how much memory a outstanding request can take.

Thanks,
Ram

On Fri, Nov 17, 2017 at 11:43 AM, Abraham Fine <afine@apache.org> wrote:

> Hi Ram-
>
> Outstanding requests can lead to high memory usage (possibly bringing
> down members of the quorum)  and slower responses to requests.
>
> I would take a look at the section from the "ZooKeeper: Distributed
> Process Coordination" book for a good description of what happens when
> the globalOutstandingLimit is reached:
> https://books.google.com/books?id=OWQdAgAAQBAJ&pg=PT255&lpg=PT255&dq=%
> 22globalOutstandingLimit%22+zookeeper&source=bl&ots=
> 14zMtuu14N&sig=nbIIbjryge-p9UMQAWcu06mnUEQ&hl=en&sa=X&ved=
> 0ahUKEwjsxb6grsbXAhVjyFQKHdztCOwQ6AEISDAD#v=onepage&q=%
> 22globalOutstandingLimit%22%20zookeeper&f=false
>
> I don't think there is any general answer to how to bring the count
> down, as the answer is totally related to your usage of ZooKeeper.
>
> Thanks,
> Abe
>
> On Fri, Nov 17, 2017, at 09:39, rammohan ganapavarapu wrote:
> > Hi,
> >
> > In zookeeper what will happened if outstanding requests are high? we have
> > default global limit to 1000, what will happened if the outstanding
> > requests go beyond global limit with is 1000? if we see huge outstanding
> > requests are there any actions to bring the count down?
> >
> > Thanks,
> > Ram
>

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