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From Jean-Daniel Cryans <jdcry...@apache.org>
Subject Re: heap memory running
Date Fri, 21 Jun 2013 21:30:30 GMT
24GB is often cited as an upper limit, but YMMV.

It also depends if you need memory for MapReduce, if you are using it.

J-D

On Wed, Jun 19, 2013 at 3:17 PM, prakash kadel <prakash.kadel@gmail.com> wrote:
> hi every one,
>
> i am quite new to base and java. I have a few questions.
>
> 1. on the web ui for hbase i have the following entry in the region server
>
> mining,60020,13711358624Fri Jun 14 00:04:22 GMT 2013requestsPerSecond=0,
> numberOfOnlineRegions=106, usedHeapMB=5577, maxHeapMB=7933
> when the hbase is idle with no requests the usedHeapMB hovers around
> 5000MB, shouldn't it go down after some idle time? what is occupying the
> heap when no requests are being made?
>
> 2. I have assigned 8GB for heap on a 48GB machine, i dont mind assigning
> more of it to hbase.
>     What is the recommended size for the heap?
>
> Sincerely,
> Prakash

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