From cassandra-user-return-1496-apmail-incubator-cassandra-user-archive=incubator.apache.org@incubator.apache.org Mon Nov 23 23:28:18 2009 Return-Path: Delivered-To: apmail-incubator-cassandra-user-archive@minotaur.apache.org Received: (qmail 90504 invoked from network); 23 Nov 2009 23:28:18 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 23 Nov 2009 23:28:18 -0000 Received: (qmail 94155 invoked by uid 500); 23 Nov 2009 23:28:18 -0000 Delivered-To: apmail-incubator-cassandra-user-archive@incubator.apache.org Received: (qmail 94147 invoked by uid 500); 23 Nov 2009 23:28:18 -0000 Mailing-List: contact cassandra-user-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: cassandra-user@incubator.apache.org Delivered-To: mailing list cassandra-user@incubator.apache.org Received: (qmail 94137 invoked by uid 99); 23 Nov 2009 23:28:18 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 23 Nov 2009 23:28:18 +0000 X-ASF-Spam-Status: No, hits=-2.6 required=5.0 tests=BAYES_00,HTML_MESSAGE X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of driftx@gmail.com designates 209.85.221.202 as permitted sender) Received: from [209.85.221.202] (HELO mail-qy0-f202.google.com) (209.85.221.202) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 23 Nov 2009 23:28:15 +0000 Received: by qyk40 with SMTP id 40so3159795qyk.22 for ; Mon, 23 Nov 2009 15:27:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=1qbVFHlzy9nI/3DUXyYwivtW4S/QBsu979XGD6z8XV0=; b=BtTji24MT1ePH+yDQL5j59e+qPsAmWbo9LOWLIbQRn/TbnwjphHF9z59hH7r+sjgnv 7xwa3OtvGJGbcjaHQiMSF6WdP9mwW8w6veF5kdBBud5DpVXwvi0+Cu3rihKvvUtbGBEF Oa+RmowauJAk8eGhcAuX0ShkRtFcNyzdRkNhM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=g81JLgoZiXbouV37m4XN9oOci/E63PSD9uPMy7lauEJ/27+x+NlXBt/bA7jKwyN+3w gywZ4mckMFwEvq/gwr3FE/6ONhuFB+EtfCmeVq2T9YclFq6+SckxObf0H+lk7dM0Xy0p 8Qv9anCI54Jm3PnHzSd7gdXKFv2rSVWap8hPY= MIME-Version: 1.0 Received: by 10.229.92.211 with SMTP id s19mr788422qcm.46.1259018874232; Mon, 23 Nov 2009 15:27:54 -0800 (PST) In-Reply-To: References: Date: Mon, 23 Nov 2009 17:27:53 -0600 Message-ID: Subject: Re: Cassandra Database Format Compatibility From: Brandon Williams To: cassandra-user@incubator.apache.org Content-Type: multipart/alternative; boundary=000e0cd6b2eec3a0250479122cb9 --000e0cd6b2eec3a0250479122cb9 Content-Type: text/plain; charset=ISO-8859-1 On Mon, Nov 23, 2009 at 4:47 PM, Jon Graham wrote: > Hello Everyone, > > Will the Cassandra database format for the current Cassandra source trunk > be compatible with the 0.5 Cassandra release? > Yes. Only the commitlog format changes between 0.4 and 0.5, and that isn't a problem since you can just nodeprobe flush to get around it. > If there are database version differences, is there a migration path to > convert older data formats to the new versions? > In the future if the format changes, there will be a migration path. > Is there an estimated release date for the 0.5 release? > Beta should happen fairly soon -- it's up for a vote in the IPMC right now. -Brandon --000e0cd6b2eec3a0250479122cb9 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
On Mon, Nov 23, 2009 at 4:47 PM, Jon Graham <sjcloud22@gmail.co= m> wrote:
Hello Everyone,

Will the Cassandra database format for the current C= assandra source trunk be compatible with the 0.5 Cassandra release?

Yes. =A0Only the commitlog format changes betw= een 0.4 and 0.5, and that isn't a problem since you can just nodeprobe = flush to get around it.=A0

=A0
If there are d= atabase version differences, is there a migration path to convert older dat= a formats to the new versions?

In the future if the format changes, there= will be a migration path.
=A0
Is there an estimated release date for the 0.5 release?

Beta should happen fairly soon -- it's up for a vote i= n the IPMC right now.

-Brandon=A0
--000e0cd6b2eec3a0250479122cb9--