From user-return-21967-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Wed Nov 2 16:00:31 2011 Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id A4B479262 for ; Wed, 2 Nov 2011 16:00:31 +0000 (UTC) Received: (qmail 67152 invoked by uid 500); 2 Nov 2011 16:00:28 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 67047 invoked by uid 500); 2 Nov 2011 16:00:28 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 67039 invoked by uid 99); 2 Nov 2011 16:00:28 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 02 Nov 2011 16:00:28 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of jacob.schneider@gmx.at designates 213.165.64.22 as permitted sender) Received: from [213.165.64.22] (HELO mailout-de.gmx.net) (213.165.64.22) by apache.org (qpsmtpd/0.29) with SMTP; Wed, 02 Nov 2011 16:00:21 +0000 Received: (qmail invoked by alias); 02 Nov 2011 15:59:58 -0000 Received: from dyn-eduroam180054.wlan.jku.at (EHLO dyn-eduroam180054.wlan.jku.at) [140.78.180.54] by mail.gmx.net (mp066) with SMTP; 02 Nov 2011 16:59:58 +0100 X-Authenticated: #30640227 X-Provags-ID: V01U2FsdGVkX1+TE7IfdeuT1+F78TrZCznAc7iEgDKexEY9/wfPJO 4jowDY0AfuDfta From: Jacob Schneider Content-Type: multipart/alternative; boundary=Apple-Mail-3-492497275 Subject: Java Heap Exc.; Memtable; Right config? Date: Wed, 2 Nov 2011 16:59:57 +0100 Message-Id: <8A1E5F10-8D97-4B9E-B4D9-758AE75038C4@gmx.at> To: user@cassandra.apache.org Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) X-Y-GMX-Trusted: 0 --Apple-Mail-3-492497275 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 hey, i have a question and need help... Description: I am using cassandra 1.* (3GB ram;4Cors) with 1 node (at first). I am = saving different sizes (0.01mb =96 600mb) of files and indexes in the db = and i want to know whats the best size of a value in a column. If the = optimal size is smaller then the filesize, i just split it in more = columns. Problem: I writed a test to find this size, but i am getting java heap excp. all = the time, if i am writing/reading to much values in a row (without = pause). How i can fix this problem? i allready read = (http://wiki.apache.org/cassandra/MemtableThresholds) and also the = cassandra =96 FAQ And i know there is no streaming L =20 Would help to decrese the flashsize of the memtable? (whould slow the = reading right?) =20 Thanks for help or links:D headgrowe= --Apple-Mail-3-492497275 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252

hey,

i have a = question and need help...

Description:

I am using = cassandra 1.* (3GB ram;4Cors) with 1 node (at first). I am saving different sizes (0.01mb =96 600mb) of files and = indexes in the db and i want to know whats the best size of a value in a column. If = the optimal size is smaller then the filesize, i just split it in more = columns.

 Problem:

I writed a = test to find this size, but i am getting java heap excp. all the time, if i am writing/reading to much values in a row (without pause).

How i can fix = this problem? i allready read (http://wiki.a= pache.org/cassandra/MemtableThresholds) and also the cassandra =96 FAQ

And = i know there is no streaming L

 

Would = help to decrese the flashsize of the memtable? (whould slow the reading right?)

 

Thanks = for help or links:D

headgrowe

= --Apple-Mail-3-492497275--