From user-return-7305-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Wed Jul 07 15:17:09 2010 Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 27375 invoked from network); 7 Jul 2010 15:17:09 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 7 Jul 2010 15:17:09 -0000 Received: (qmail 16281 invoked by uid 500); 7 Jul 2010 15:17:07 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 16250 invoked by uid 500); 7 Jul 2010 15:17:07 -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 16242 invoked by uid 99); 7 Jul 2010 15:17:06 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 07 Jul 2010 15:17:06 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=FREEMAIL_FROM,HTML_MESSAGE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of chingshenchen@gmail.com designates 209.85.214.44 as permitted sender) Received: from [209.85.214.44] (HELO mail-bw0-f44.google.com) (209.85.214.44) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 07 Jul 2010 15:17:00 +0000 Received: by bwz7 with SMTP id 7so4973778bwz.31 for ; Wed, 07 Jul 2010 08:16:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=NRVHPLxld7XDcOitsV8jUCtV3a52VXlVL/WvFUgWaPY=; b=iXQqKT2yspv99LQ8g9TUkuU4n5RICs12Ugauf1BEbgumuPCSJlP0mEwipiWALWrPr2 i/2/ODyPMBXpYkO3PPYZML8/lQpIHbc7b3hWrwJzJth9dOrpkHX8NPklhymxtt/8iGuE mJ80WflWqWlNCxUQ/x1tNJ3EqwAvLBSpE6EU0= 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=HzBPF+t+Ar0uiTnUlu5e/8YW0zm579eKYMnJfTpRh7J2kOzp+zp3oGvxWWvZxXx+x2 N5HiRJ/FzRQC6xB8X++gBSusJ6KV4ihaOiy5COuTqr4pUKTXkUqUR9KWsnxSFeOIt7/t vCHFLATl3TvXi5l+rlqG2Qz5kNElhRDp/9IxM= MIME-Version: 1.0 Received: by 10.204.162.136 with SMTP id v8mr5076231bkx.168.1278515799599; Wed, 07 Jul 2010 08:16:39 -0700 (PDT) Received: by 10.204.115.205 with HTTP; Wed, 7 Jul 2010 08:16:39 -0700 (PDT) In-Reply-To: References: Date: Wed, 7 Jul 2010 23:16:39 +0800 Message-ID: Subject: Re: Some questions about the write operation and hinted handoff From: ChingShen To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=000325553f061329c9048acda8b0 X-Virus-Checked: Checked by ClamAV on apache.org --000325553f061329c9048acda8b0 Content-Type: text/plain; charset=ISO-8859-1 Thanks Jonathan Ellis, If so, how does the hinted handoff work? I thought the coordinator node will write the data to another node(e.g. G node), I'm confused. Shen > > Second, if > > B node is down during the write operation, does it return failure(CL=ALL) > to > > user? > > yes > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the source for professional Cassandra support > http://riptano.com > --000325553f061329c9048acda8b0 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Thanks Jonathan Ellis,

=A0 If so, ho= w does the hinted handoff work? I thought the coordinator node will write t= he data to another node(e.g. G node), I'm confused.

Shen
=A0<= /div>
> Second, if
> B node is down during the write operation, does it return failure(CL= =3DALL) to
> user?

yes

--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com



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