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From Vladimir Ozerov <voze...@gridgain.com>
Subject Re: IGFS: Data cache size
Date Wed, 10 Feb 2016 06:07:42 GMT
Hi Kobe,

That is right. Essentially, IGFS is a cache. And any Ignite cache could
occupy any amount of memory unless constrained in some way.

Vladimir.

On Tue, Feb 9, 2016 at 11:51 PM, Kobe <rk_@mailcity.com> wrote:

> Vladimir -
>
> That means that an instance of IGFS can occupy all of the heap of the JVM
> unless constrained using
>
>   * <bean class="org.apache.ignite.configuration.FileSystemConfiguration">
>        <property name="maxSpaceSize" value="#{4 * 1024 * 1024 * 1024}"/>
>    </bean>
> *
> Is this correct?
>
> Thanks,
>
> /Kobe
>
>
> Vladimir Ozerov wrote
> > Hi Kobe,
> >
> > Actually, none of these parameters manage IGFS size.
> >
> > Please take a look at
> > org.apache.ignite.configuration.FileSystemConfiguration.getMaxSpaceSize()
> > method.
> > This value defines how much space in bytes IGFS can take on that node.
> You
> > can either set it to some positive value in bytes, or leave default
> value.
> > in the latter case Ignite will use between 50-80% of available heap as
> > maximum IGFS size (see GridCacheAdapter constructor for exact size
> > calculation logic).
> >
> > Please let me know if you have any further questions.
> >
> > Vladimir.
> >
> > On Mon, Feb 8, 2016 at 4:34 AM, Kobe &lt;
>
> > rk_@
>
> > &gt; wrote:
> >
> >> Hello...
> >>
> >> I am instantiating a single node IGFS cluster to begin with. I am trying
> >> to
> >> determine the available space of the fiesystem based on the parameter
> >>
> >>
> > <property name="blockSize" value="#{128 * 1024}"/>
> >>
> > <property name="perNodeBatchSize" value="512"/>
> >>
> > <property name="perNodeParallelBatchCount" value="16"/>
> >>
> >>
> >>
> > <property name="prefetchBlocks" value="32"/>
> >>
> >>
> >> and
> >>        public CacheConfiguration&lt;K,V&gt; setStartSize(int startSize)
> >>
> >> Please help me understand these parameters, their units and how they
> >> determine the space of the in-memory filesystem.
> >>
> >> thankx,
> >>
> >> /Kobe
> >>
> >>
> >>
> >> --
> >> View this message in context:
> >>
> http://apache-ignite-users.70518.x6.nabble.com/IGFS-Data-cache-size-tp2875.html
> >> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
> >>
>
>
>
>
>
> --
> View this message in context:
> http://apache-ignite-users.70518.x6.nabble.com/IGFS-Data-cache-size-tp2875p2910.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>

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