Return-Path: Delivered-To: apmail-incubator-cassandra-user-archive@minotaur.apache.org Received: (qmail 47277 invoked from network); 7 Dec 2009 14:48:10 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 7 Dec 2009 14:48:10 -0000 Received: (qmail 41303 invoked by uid 500); 7 Dec 2009 14:48:09 -0000 Delivered-To: apmail-incubator-cassandra-user-archive@incubator.apache.org Received: (qmail 41246 invoked by uid 500); 7 Dec 2009 14:48:09 -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 41237 invoked by uid 99); 7 Dec 2009 14:48:09 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 07 Dec 2009 14:48:09 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of jbellis@gmail.com designates 209.85.220.216 as permitted sender) Received: from [209.85.220.216] (HELO mail-fx0-f216.google.com) (209.85.220.216) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 07 Dec 2009 14:48:01 +0000 Received: by fxm8 with SMTP id 8so3469910fxm.27 for ; Mon, 07 Dec 2009 06:47:41 -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 :from:date:message-id:subject:to:content-type; bh=DtR2nvQ733lEL5g/l2pKFqR5FFoWpFhuJ9+Z6c8fHB8=; b=b1xC7W9PP5f8jtrYGVsqsRNUGcyL8NoR4OdAwKtUWkIuTiJ9N5vLkpNSpE6KLB0MFY 0CPMwtQRPnIm3ykx86Q4Y29BGRxDaIKALqcoasaVSrfVro/QB3AcnOE55jUTevWACjBC 6oZHA/dLADrLqfRUoiai6QHLFPgEayNyalESQ= 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; b=apHgnhx9/tIGlWiaHZGqtfLaCLh8CljEfXXMqyFrXbzzy9xWx3V5O6Iylesxl+Os8a vZ0VmFGNyvttv9glQLWzdKwtyUcZ+3zMbTWnSO/Ki4s3U1f0DhMnOaxzROqh8Tyj6tiQ Ok/B/vIQkFz6xXJbkD7zQCLOxMmaAkaoecXYk= MIME-Version: 1.0 Received: by 10.216.85.5 with SMTP id t5mr2516326wee.142.1260197261213; Mon, 07 Dec 2009 06:47:41 -0800 (PST) In-Reply-To: References: <9e9cb550912061434g96cb59j100cb985a1186e0b@mail.gmail.com> From: Jonathan Ellis Date: Mon, 7 Dec 2009 08:47:21 -0600 Message-ID: Subject: Re: vector clocks? To: cassandra-user@incubator.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org On Mon, Dec 7, 2009 at 8:45 AM, Ran Tavory wrote: > So, currently, is Cassandra using the client provided timestamps for > conflict resolution? yes > Do clients have insight to conflicts Cassandra cannot resolve no, and there's no such thing as "conflicts Cassandra cannot resolve," either > What's the semantic of "eventual consistency" in Cassandra's case then? eventually (immediately, if R + W > N), every read will return the most recent write