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Date: Mon, 22 Nov 2010 14:02:22 -0600
Message-ID: <AANLkTinT3EBY2ugqhrsGcKsPqST61La-yRrk-Pzprqx3@mail.gmail.com>
Subject: Re: Newbie question on Cassandra mem usage
From: Jonathan Ellis <jbellis@gmail.com>
To: user <user@cassandra.apache.org>
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Set your columnfamily thresholds lower.

On Mon, Nov 22, 2010 at 12:45 PM, Trung Tran <tran.hieutrung@gmail.com> wrote:
> Hi,
>
> I have a test cluster of 3 nodes, 14Gb of mem in each node,
> replication factor = 3. With default -Xms and Xmx, my nodes are set to
> have max-heap-size = 7Gb. After initial load with about 200M rows
> (write with hector default consistencylevel = quorum,) my nodes memory
> usage are up to 13.5Gb, show a bunches of GC notifications and
> eventually crashes with java.lang.OutOfMemoryError: Java heap space.
>
> Is there any setting that can help with this scenario?
>
> Thanks,
> Trung.
>


-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com