From user-return-28822-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Mon Sep 17 09:18:09 2012 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 76705D7B4 for ; Mon, 17 Sep 2012 09:18:09 +0000 (UTC) Received: (qmail 31603 invoked by uid 500); 17 Sep 2012 09:18:07 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 31280 invoked by uid 500); 17 Sep 2012 09:18:07 -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 31254 invoked by uid 99); 17 Sep 2012 09:18:06 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 17 Sep 2012 09:18:06 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=FSL_RCVD_USER,HTML_MESSAGE,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of andre.cruz@co.sapo.pt designates 212.55.140.19 as permitted sender) Received: from [212.55.140.19] (HELO sl.pt) (212.55.140.19) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 17 Sep 2012 09:18:01 +0000 Received: (qmail 15304 invoked from network); 17 Sep 2012 09:17:38 -0000 X-AntiVirus: PTMail-AV 0.3-0.95.1 X-Scan-Status: AV clean (0.07120 seconds); Received: from unknown (HELO [10.134.132.140]) (andre.cruz@co.sapo.pt@[10.134.132.140]) (envelope-sender ) by mail-sl-pt01 (qmail-ldap-1.03) with AES128-SHA encrypted SMTP for ; 17 Sep 2012 09:17:38 -0000 From: =?iso-8859-1?Q?Andr=E9_Cruz?= Content-Type: multipart/alternative; boundary="Apple-Mail=_54DE08B5-44C9-4762-A75F-2E5A3D88BFE3" Message-Id: <91FC0B76-F284-416A-96AA-950CFF43302F@co.sapo.pt> Mime-Version: 1.0 (Mac OS X Mail 6.0 \(1486\)) Subject: Re: Query advice to prevent node overload Date: Mon, 17 Sep 2012 10:17:38 +0100 References: To: In-Reply-To: X-Mailer: Apple Mail (2.1486) X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Mail=_54DE08B5-44C9-4762-A75F-2E5A3D88BFE3 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 On Sep 17, 2012, at 3:04 AM, aaron morton = wrote: >> I have a schema that represents a filesystem and one example of a = Super CF is: > This may help with some ideas > http://www.datastax.com/dev/blog/cassandra-file-system-design Could you explain the usage of the "sentinel"? Which nodes have it? I = understand that it should be used for recursive dir listings, to = restrict the nodes returned to the "/tmp/" dir, but I'm not sure I = understand how it works.... Thanks, Andr=E9= --Apple-Mail=_54DE08B5-44C9-4762-A75F-2E5A3D88BFE3 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 aaron@thelastpickle.com> = wrote:
I have a schema that represents a filesystem = and one example of a Super CF is:
This may help = with some ideas
htt= p://www.datastax.com/dev/blog/cassandra-file-system-design

Could you explain the usage of the = "sentinel"? Which nodes have it? I understand that it should be used for = recursive dir listings, to restrict the nodes returned to the "/tmp/" = dir, but I'm not sure I understand how it = works....

Thanks,
Andr=E9
= --Apple-Mail=_54DE08B5-44C9-4762-A75F-2E5A3D88BFE3--