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 62C2C98C7 for ; Thu, 13 Oct 2011 22:09:24 +0000 (UTC) Received: (qmail 8910 invoked by uid 500); 13 Oct 2011 22:09:22 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 8888 invoked by uid 500); 13 Oct 2011 22:09:22 -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 8880 invoked by uid 99); 13 Oct 2011 22:09:22 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 13 Oct 2011 22:09:22 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of jbellis@gmail.com designates 209.85.215.172 as permitted sender) Received: from [209.85.215.172] (HELO mail-ey0-f172.google.com) (209.85.215.172) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 13 Oct 2011 22:09:16 +0000 Received: by eyg24 with SMTP id 24so539744eyg.31 for ; Thu, 13 Oct 2011 15:08:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=iDGPr8v8cnWGMMwZqy0GZOv5D3KVhgrra+E/2SeMZFw=; b=v5uDhnoHxPP/u6GfVipXOsZ9JGo8ykL9cNSuhiXH1Ri0XfoWHutfO+KFSXAHMg+1V8 7oTmJn5bpw6xOKgBB27/dcdPv06MQKs/YWazTfEuCCzMTXsenic0Z+OQdgsG8Par06+y kLxMHwf//NNiAjIkIEPuzhGW5qviofVgPdNeA= Received: by 10.213.9.16 with SMTP id j16mr941090ebj.90.1318543735247; Thu, 13 Oct 2011 15:08:55 -0700 (PDT) MIME-Version: 1.0 Received: by 10.213.17.71 with HTTP; Thu, 13 Oct 2011 15:08:34 -0700 (PDT) In-Reply-To: <4A417C12-918E-41C7-8592-98FCC71CD996@thelastpickle.com> References: <4A417C12-918E-41C7-8592-98FCC71CD996@thelastpickle.com> From: Jonathan Ellis Date: Thu, 13 Oct 2011 17:08:34 -0500 Message-ID: Subject: Re: Cassandra as session store under heavy load To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org Or upgrade to 1.0 and use leveled compaction (http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra) On Thu, Oct 13, 2011 at 4:28 PM, aaron morton wrote: > They only have a minimum time, gc_grace_seconds for deletes. > > If you want to be really watch disk space reduce the compaction thresholds on the CF. > > Or run a major compaction as part of maintenance. > > cheers > > ----------------- > Aaron Morton > Freelance Cassandra Developer > @aaronmorton > http://www.thelastpickle.com > > On 13/10/2011, at 10:50 PM, Maciej Miklas wrote: > >> durable_writes sounds great - thank you! I really do not need commit log here. >> >> Another question: it is possible to configure live time of Tombstones? >> >> >> Regards, >> Maciej > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com