On Mon, Jul 25, 2011 at 1:20 PM, Buttler, David <[email protected]> wrote: > However, only two vendors deliver a platform that supports hbase (with > append): Cloudera and MapR. Â HortonWorks and ASF do not (to my knowledge). I > am not sure I can count hard to find/compile branches that exist in ASF's > version control as "supporting" hbase. >
Yes. The manual says this on hadoop version currently: "This version of HBase will only run on Hadoop 0.20.x. It will not run on hadoop 0.21.x (nor 0.22.x). HBase will lose data unless it is running on an HDFS that has a durable sync. Hadoop 0.20.2 and Hadoop 0.20.203.0 DO NOT have this attribute. Currently only the branch-0.20-append branch has this.... Or rather than build your own, you could use Cloudera's CDH3. CDH has the 0.20-append patches needed to add a durable sync (CDH3 betas will suffice; b2, b3, or b4)." Unless objection, I think I should add MapR to the tail of the last paragraph (with the 'free as in free beer' caveat). St.Ack
