it is kind of the classic distinction between OLTP & OLAP. Cassandra is to OLTP as HBase is to OLAP (for those SAT nutz).
Both are useful and valuable in their own right, agreed. On Sun, Apr 25, 2010 at 12:20 PM, Jeff Hodges <jhod...@twitter.com> wrote: > HBase is awesome when you need high throughput and don't care so much > about latency. Cassandra is generally the opposite. They are > wonderfully complementary. > -- > Jeff > > On Sun, Apr 25, 2010 at 8:19 AM, Lenin Gali <galile...@gmail.com> wrote: >> I second Joe. >> >> Lenin >> Sent from my BlackBerry® wireless handheld >> >> -----Original Message----- >> From: Joe Stump <j...@joestump.net> >> Date: Sun, 25 Apr 2010 13:04:50 >> To: <user@cassandra.apache.org> >> Subject: Re: The Difference Between Cassandra and HBase >> >> >> On Apr 25, 2010, at 11:40 AM, Mark Robson wrote: >> >>> For me an important difference is that Cassandra is operationally much more >>> straightforward - there is only one type of node, and it is fully redundant >>> (depending what consistency level you're using). >>> >>> This seems to be an advantage in Cassandra vs most other distributed >>> storage systems, which almost all seem to require some "master" nodes which >>> have different operational requirements (e.g. cannot fail, need to be >>> failed over manually or have another HA solution installed for them) >> >> These two remain the #1 and #2 reasons I recommend Cassandra over HBase. At >> the end of the day, Cassandra is an *absolute* dream to manage across >> multiple data centers. I could go on and on about the voodoo that is >> expanding, contracting, and rebalancing a Cassandra cluster. It's pretty >> awesome. >> >> That being said, we're getting ready to spin up an HBase cluster. If you're >> wanting increment/decrement, more complex range scans, etc. then HBase is a >> great candidate. Especially if you don't need it to span multiple data >> centers. We're using Cassandra for our main things, and then HBase+Hive for >> analytics. >> >> There's room for both. Especially if you're using Hadoop with Cassandra. >> >> --Joe >> >> > -- /* Joe Stein http://www.linkedin.com/in/charmalloc */
