Thanks for the detailed answers Jim, this is very useful. Now I'm off to and do some playing with HBaseShell to get a good feel for it all in practice.

I hope these posts get rolled into the docs as a primer. This has definitely helped free my head from thinking about these concepts the RDBMS way.

--Drew Farris 08:00, 28 May 2008 (MST)

No problem Drew, glad to help!

Thanks for posing your insightful questions - without them I probably wouldn't have thought to write this article.

--Jimbojw 09:41, 28 May 2008 (MST)

A winner as always. I've been messing with HBase for a few days now - and love it. This helps, thanks Jim.

--Eric 05:39, 29 May 2008 (MST)

Thanks Eric!

Doing what I can, for lack of a better option :)

--Jimbojw 12:29, 29 May 2008 (MST)

Thinks for this article.You did a good job!

--Josh Ma 03:18, 30 May 2008 (MST)

Please also see the thread "compression in HBase" in hbase mailing:

http://mail-archives.apache.org/mod_mbox/hadoop-hbase-user/200807.mbox/browser

--rafan 03:27, 11 July 2008 (MST)

Regarding the IN_MEMORY attribute in HBase, it is still not implemented so no benchmarks ;) Also, along with MAX_VERSIONS, 0.2.0 will introduce a TTL.

--Jean-Daniel Cryans 06:38, 11 July 2008 (MST)

Thanks for putting this up! And where's the beef =) I'd really like to see some benchmarks. I have been researching HBase performance and found much discussion but few benchmarks.

--leorleor 12:05, 11 September 2008 (MST)