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From Victor Kabdebon <victor.kabde...@gmail.com>
Subject Re: Cassandra memory consumption
Date Wed, 16 Feb 2011 19:22:53 GMT
Thanks robert, and do you know if there is a way to control the maximum
likely number of memtables ? (I'd like to cap it at 2)

2011/2/16 Robert Coli <rcoli@digg.com>

> On Wed, Feb 16, 2011 at 7:12 AM, Victor Kabdebon
> <victor.kabdebon@gmail.com> wrote:
> > Someone please correct me if I am wrong, but I think the overhead you can
> > expect is something like :
> >
>
> MemTableThroughtPutInMB * <JavaOverheadFudgeFactor> * <maximum likely
> number of such memtables which might exist at once, due to flushing
> logic>
>
> JavaOverHeadFudgeFactor is "at least 2".
>
> The maximum likely number of such memtables is usually roughly "3"
> when considered across an assortment of columnfamilies with different
> write patterns.
>
> >  but I don't know when BinaryMemTableThroughputInMb come into account..
>
> BinaryMemTable options are only considered when using the Binary
> Memtable interface. If you don't know what that is, you're not using
> it.
>
> =Rob
>

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