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From: Jonathan Ellis <jbellis@gmail.com>
Date: Mon, 22 Feb 2010 16:42:42 -0600
Message-ID: <e06563881002221442v497c504fs70501bc79e9b94f8@mail.gmail.com>
Subject: Re: Cassandra paging, gathering stats
To: cassandra-user@incubator.apache.org
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Breaking sooner rather than later is a feature, of sorts.  You really
do need to give a sane max.  Remember that thrift must pull results
into memory before giving them back to you, so allowing you to give it
a max that cannot possibly fit in memory is not doing you a favor.

-Jonathan

On Mon, Feb 22, 2010 at 4:40 PM, Sonny Heer <sonnyheer@gmail.com> wrote:
> Is this a bug?
>
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0ColumnParent columnParent =3D new ColumnPa=
rent(cp, null);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SlicePredicate slicePredicate =3D new Slic=
ePredicate();
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0// Get all columns
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SliceRange sliceRange =3D new SliceRange(n=
ew byte[] {}, new
> byte[] {}, false, Integer.MAX_VALUE);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0slicePredicate.setSlice_range(sliceRange);
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0List<KeySlice> columns;
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0try {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0columns =
=3D client.get_range_slice(keySpaceStr, columnParent,
> slicePredicate, "STU", "T", 1000000, ConsistencyLevel.ONE);
>
>
> the client.get_range_slice has ~100 rows returned. =A0when i change the
> count above 1000000 (or some # below int max) it works fine. =A0 When I
> change the value to Integer.MAX_VALUE it fails with the Java heap
> space error. =A0I've tried upping the heap size to 1024 as well. =A0Even
> though the total results returned is the same (~100) why would it not
> work with int max? =A0Is something being built based on this count value
> passed in?
>