From cassandra-user-return-1710-apmail-incubator-cassandra-user-archive=incubator.apache.org@incubator.apache.org Tue Dec 08 06:14:26 2009 Return-Path: Delivered-To: apmail-incubator-cassandra-user-archive@minotaur.apache.org Received: (qmail 50217 invoked from network); 8 Dec 2009 06:14:26 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 8 Dec 2009 06:14:26 -0000 Received: (qmail 89641 invoked by uid 500); 8 Dec 2009 06:14:25 -0000 Delivered-To: apmail-incubator-cassandra-user-archive@incubator.apache.org Received: (qmail 89610 invoked by uid 500); 8 Dec 2009 06:14:25 -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 89601 invoked by uid 99); 8 Dec 2009 06:14:25 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 08 Dec 2009 06:14:25 +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 74.125.78.149 as permitted sender) Received: from [74.125.78.149] (HELO ey-out-1920.google.com) (74.125.78.149) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 08 Dec 2009 06:14:17 +0000 Received: by ey-out-1920.google.com with SMTP id 3so544703eyh.8 for ; Mon, 07 Dec 2009 22:13:57 -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=Io/nyAloAN1L91m5tsUZx44Z6AVNQtZDY4oJUdvHMOY=; b=ODB/NPut2iTpyBQyBDYBswkVkdaiZ+o6lS8f5cv4NQqcwU9hPMIwOZEt1ROvqH9hcr 6U0ORp20xf4ebo/Vn4jfKtk33CK/Ka0U+Ker8Iv39SbkEvH6Z53lsSkSeTznsN0rxrKn hGJBeUJ21PVNqyyOwXDSxofVmeHb78I2joEZc= 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=NP27+wNL68h987ZzzoJ+AAlCNzrpYgd79JiC0Ff7cCb6XRgR/8htTbJwIqc3/+P0VL wLVUW7LFVYAnthVGv/KKPursnTODxlrHJgVJDBFdrGQBuxnbVbLjGkCiJ0rr/L84rFEN UlJrfot8eK4pO8M/ADIvvfuDKQq2wKa7l6zKo= MIME-Version: 1.0 Received: by 10.216.90.15 with SMTP id d15mr1180782wef.219.1260252837273; Mon, 07 Dec 2009 22:13:57 -0800 (PST) In-Reply-To: <87D39CDC-D684-4A61-A039-D1BC30D2CC9E@holsman.net> References: <9afa75fe0912051841x745c03bag60c145a745a717ae@mail.gmail.com> <1737C2A7-714A-4E25-B6D7-E8A879D92A2E@gmail.com> <9972cc9e0912052012o61b82d06h9f4fe25c0d1cd552@mail.gmail.com> <87D39CDC-D684-4A61-A039-D1BC30D2CC9E@holsman.net> From: Jonathan Ellis Date: Tue, 8 Dec 2009 00:13:37 -0600 Message-ID: Subject: Re: Cassandra vs HBase To: cassandra-user@incubator.apache.org Content-Type: text/plain; charset=ISO-8859-1 X-Virus-Checked: Checked by ClamAV on apache.org hop is to traditional hadoop what something like truviso is to postgresql. in other words, hop is still poorly suited for the sorts of things people would use cassandra for. On Tue, Dec 8, 2009 at 12:07 AM, Ian Holsman wrote: > This is slightly off-topic > There is a recent project called hadoop online (hop) on google-code that > promises a online/continuous query ability on top of hadoop which should > allow for near real time activities instead of the batch stuff that mapred > does > > --- > Sent from my phone > Ian Holsman - 703 879-3128 > On 06/12/2009, at 3:12 PM, Joseph Bowman wrote: > > When I wrote my Why Cassandra article, I didn't get into the why I didn't > choose x platform because I didn't want to start a flame war by doing > comparisons. For HBase, the primary reason I didn't choose it is that while > there were benchmarks of what it could theoretically do, there wasn't any > real real world deployments proving it. My experience as a systems > administrator is that it's best to go with a product that's been proven over > time in real world scenarios. > > I'll add to this though, that nothing nosql, even Cassandra, has reached the > point where I feel it's no-brainer to choose it over anything, including sql > based solutions like mysql and oracle. It really comes down to your > requirements. > > On Sat, Dec 5, 2009 at 11:04 PM, Matt Revelle wrote: >> >> On Dec 5, 2009, at 21:45, Joe Stump wrote: >> >>> >>> On Dec 5, 2009, at 7:41 PM, Bill Hastings wrote: >>> >>>> [Is] HBase used for real timish applications and if so any ideas what >>>> the largest deployment is. >>> >>> I don't know of anyone off the top of my head who's using anything built >>> on top of Hadoop for a real-time environment. Hadoop just wasn't built for >>> that. It was built, like MapReduce, for crunching absurd amounts of data >>> across hundreds of nodes in a "reasonable" amount of time. >>> >>> Just my $0.02. >>> >>> --Joe >>> >> >> While Hadoop MapReduce isn't meant for realtime use, HBase can handle it. >> >> Over last summer there were some benchmarks included in HBase/Hadoop >> presentations that showed, IIRC, performance comparable to Cassandra. >> > >