Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 76433 invoked from network); 18 Jul 2010 20:22:02 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 18 Jul 2010 20:22:02 -0000 Received: (qmail 62055 invoked by uid 500); 18 Jul 2010 20:22:01 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 62005 invoked by uid 500); 18 Jul 2010 20:22:00 -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 61993 invoked by uid 99); 18 Jul 2010 20:22:00 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 18 Jul 2010 20:22:00 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,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 209.85.210.44 as permitted sender) Received: from [209.85.210.44] (HELO mail-pz0-f44.google.com) (209.85.210.44) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 18 Jul 2010 20:21:54 +0000 Received: by pzk6 with SMTP id 6so1845268pzk.31 for ; Sun, 18 Jul 2010 13:21:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:mime-version:received:in-reply-to :references:from:date:message-id:subject:to:content-type :content-transfer-encoding; bh=slA5NBn8WKLT9ib/WerQrOgt/zvUIh57pge5aNETjfM=; b=OiODg6LOW56clEsj/U6+99+gXwuGhQjZZ1EJjZtPUTzMABCFV4A3fcWUjYStRCecvt KkPkpk+PNkfrAZJ2XrjN5STFWvUlAsY0LuI1NQqdtgOkbiroC58x/x/NYHTxfjAJlfzL smEJ96bSSn5J6NfkLxhFrzUftjrvNeWsFnXSg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; b=JFcjLDS0Zemz13cpV4vjOGOATW9XFrzFInD3mRSxPyrnsNc/VJ5nkAt1ZTz51gCBuS LYsD91acr+jV31BFPtS66TZDGffFwEQx22P/NZ+qfyeRzbe+L2si6qZvec77E4Jo6ljc Q9e34ggRgIneoTQSh8cumqtGBw6j4A1obhBHY= Received: by 10.142.171.9 with SMTP id t9mr5509172wfe.118.1279484493110; Sun, 18 Jul 2010 13:21:33 -0700 (PDT) MIME-Version: 1.0 Received: by 10.142.103.9 with HTTP; Sun, 18 Jul 2010 13:21:13 -0700 (PDT) In-Reply-To: References: From: Jonathan Ellis Date: Sun, 18 Jul 2010 15:21:13 -0500 Message-ID: Subject: Re: When will major compaction be triggered To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Virus-Checked: Checked by ClamAV on apache.org There isn't much to provide; if you only have 3 sstables on your system, for instance, and they get compacted together, it will still be a "major" compaction and result in tombstones being removed. On Sun, Jul 18, 2010 at 1:27 PM, Schubert Zhang wrote: > Hi Jonathan, > > Could you provide info about "the special case where a minor compaction, > also > happens to be a major one"? > > On Wed, May 19, 2010 at 2:29 PM, Jonathan Ellis wrote= : >> >> No. =A0(Except in the special case where a minor compaction, also >> happens to be a major one.) >> >> On Tue, May 18, 2010 at 6:29 PM, Yi Mao wrote: >> > Hi, >> > Nodetool is one way to trigger major compaction. Will major compaction >> > be >> > triggered automatically? Thanks. >> > >> > Yi >> > >> >> >> >> -- >> Jonathan Ellis >> Project Chair, Apache Cassandra >> co-founder of Riptano, the source for professional Cassandra support >> http://riptano.com > > --=20 Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com