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 9E04618378 for ; Mon, 3 Aug 2015 01:23:49 +0000 (UTC) Received: (qmail 28521 invoked by uid 500); 3 Aug 2015 01:23:46 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 28477 invoked by uid 500); 3 Aug 2015 01:23:46 -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 28467 invoked by uid 99); 3 Aug 2015 01:23:46 -0000 Received: from Unknown (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 03 Aug 2015 01:23:46 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 4DB43D9B34 for ; Mon, 3 Aug 2015 01:23:46 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 2.901 X-Spam-Level: ** X-Spam-Status: No, score=2.901 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=3, URIBL_BLOCKED=0.001] autolearn=disabled Authentication-Results: spamd1-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-us-west.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id fcZzIdv5iipF for ; Mon, 3 Aug 2015 01:23:36 +0000 (UTC) Received: from mail-io0-f179.google.com (mail-io0-f179.google.com [209.85.223.179]) by mx1-us-west.apache.org (ASF Mail Server at mx1-us-west.apache.org) with ESMTPS id 90DCF24A32 for ; Mon, 3 Aug 2015 01:23:36 +0000 (UTC) Received: by iodd187 with SMTP id d187so130745442iod.2 for ; Sun, 02 Aug 2015 18:22:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=YeBRfBhN+1/3MGXVfM1iM9d14ecQkLot0ZfLDS0txeg=; b=hWJ+wuz35RJz6BfJiPkHEP4GZxtpOsXyApIKfkWajERqJFjHl+hfsAKqGrM9G0pQxf bPH9Rkd1Jiai9V9+EMRIEnSROMZ4eF4oAPFrdlvLWQj2UB6zR0p2E+jpQ0LxqXr/pxRA TkGuexb3vvauO904/ssAofyaYUNkVWz5V4XzMp+4EENsRCU+sclAE1nBlWKlldVxwLDW ov7jnFMipdCvSOyJnERNH2T4JCWivBmwwHCPYZPuDCJ9Nnfmp8os4AnZsoGUhY8S18MV hkwjicSyHjSnevx2KrwNKBp3MeMxw/SiFIWVEE31XhX6KaWTrALwCwwI/IfJs/Eg1GXS zhPw== MIME-Version: 1.0 X-Received: by 10.107.136.89 with SMTP id k86mr17282506iod.53.1438564971113; Sun, 02 Aug 2015 18:22:51 -0700 (PDT) Received: by 10.64.96.10 with HTTP; Sun, 2 Aug 2015 18:22:51 -0700 (PDT) Date: Sun, 2 Aug 2015 21:22:51 -0400 Message-ID: Subject: GossipingPropertyFileSnitch vs Ec2Snitch From: John Wong To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=001a1145a07216f2a4051c5e0235 --001a1145a07216f2a4051c5e0235 Content-Type: text/plain; charset=UTF-8 Hi Based on * http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchEC2_t.html * http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchGossipPF_c.html What other benefits can Ec2Snitch provide in a single-region, multi-az AWS deployment besides automatically setting dc and rack for you as the snitch reads from EC2 metadata. Obviously there is a concern with what if there is something wrong with the metadata server... Thanks. John --001a1145a07216f2a4051c5e0235 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
What other benefits c= an Ec2Snitch provide in a single-region, multi-az AWS deployment besides au= tomatically setting dc and rack for you as the snitch reads from EC2 metada= ta.
Obviously there is a concern with what if there is something w= rong with the metadata server...

Thanks.
Jo= hn
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