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 98CB4F51A for ; Fri, 19 Apr 2013 16:44:39 +0000 (UTC) Received: (qmail 3455 invoked by uid 500); 19 Apr 2013 16:44:37 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 3317 invoked by uid 500); 19 Apr 2013 16:44:36 -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 3301 invoked by uid 99); 19 Apr 2013 16:44:36 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 19 Apr 2013 16:44:36 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of rcoli@eventbrite.com designates 209.85.128.50 as permitted sender) Received: from [209.85.128.50] (HELO mail-qe0-f50.google.com) (209.85.128.50) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 19 Apr 2013 16:44:30 +0000 Received: by mail-qe0-f50.google.com with SMTP id a11so2828678qen.9 for ; Fri, 19 Apr 2013 09:44:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type:x-gm-message-state; bh=kKQcqkU31yUkAGEe787pkJjiXC+lixoxLncWVPV/TVE=; b=nqTTTXsMZooFsw2eYHDEAY7KvU1pexSFJsV2TLOBc+j2lNX40eBXW/zgeJAG5L05tE 1GfHqGjoOqvvSkf/YOeBArydfc66N7MQ3xdgTxaAPqG0tNOUxD86sPeyyn26HzEG+nXE M9rH5t7RL/EpJI8xnp3F6afoJULxAztRvEs2jMkV6bHi+qqVHxv0ds1qNV6McdWx4/vV POnNI+jrPPL+Vttf2MF+2Tvy7zBQ5Phlpz8bReGvQMFE8XAX3A8KJIVu7g32Jth79LTC 1MZscEaIH8IUauIvedCtYuPBlZJOaX344U33E94kRIaJy3mOXg0zHoBK9JLO/jxJfWPQ thZQ== MIME-Version: 1.0 X-Received: by 10.224.39.146 with SMTP id g18mr14706747qae.31.1366389849407; Fri, 19 Apr 2013 09:44:09 -0700 (PDT) Received: by 10.49.29.129 with HTTP; Fri, 19 Apr 2013 09:44:09 -0700 (PDT) In-Reply-To: References: <864E050E-728F-45F8-A444-C9D5C0CA248E@thelastpickle.com> <516FE5D7.4010402@opera.com> Date: Fri, 19 Apr 2013 09:44:09 -0700 Message-ID: Subject: Re: differences between DataStax Community Edition and Cassandra package From: Robert Coli To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Gm-Message-State: ALoCoQkr/sQ24LUWmnNnoL/iYiNkVkMkpDeJuoWu7tXdb53+5jHpsMVWWwzG4Y2EyJsXC6kcaMZ/ X-Virus-Checked: Checked by ClamAV on apache.org On Fri, Apr 19, 2013 at 4:18 AM, Goktug YILDIRIM wrote: > > I am sorry if this a very well know topic and I missed that. I wonder why one must use CFS. What is unavailable in Cassandra without CFS? The SOLR stuff (also only-in-DSE) uses CFS for Hadoop-like storage. This is so you can use full SOLR support with DSE Cassandra without needing Hadoop. http://www.datastax.com/dev/blog/cassandra-file-system-design " The Cassandra File System (CFS) is an HDFS compatible filesystem built to replace the traditional Hadoop NameNode, Secondary NameNode and DataNode daemons. It is the foundation of our Hadoop support in DataStax Enterprise. The main design goals for the Cassandra File System were to first, simplify the operational overhead of Hadoop by removing the single points of failure in the Hadoop NameNode. Second, to offer easy Hadoop integration for Cassandra users (one distributed system is enough) " =Rob