There are a few problems for Avatar node which would prevent me from ever using it:
- assumption of highly available NFS, this would typically mean specialized hardware - failover time is potentially lengthy (article says 60 seconds), and HBase regionservers might fail It's an interesting hack, I hear it was only 800 loc, but I'm not sure if you are not Dhruba you can run it. On Thu, Aug 18, 2011 at 9:49 PM, Jack Levin <[email protected]> wrote: > I don't think there is anyone except Facebook actually uses it. Their > case is special, as they have millions and millions of files in HDFS. > > -Jack > > On Thu, Aug 11, 2011 at 11:19 AM, shanmuganathan.r > <[email protected]> wrote: >> >> Hi All, >> >> I am running the HBase distributed mode in seven node cluster with >> backup master. The HBase is running properly in the backup master >> environment. I want to run this HBase on top of the High Availability >> Hadoop. I saw about Avatar node in the following link >> http://hadoopblog.blogspot.com/2010/02/hadoop-namenode-high-availability.html >> . >> I need more help regarding this Avatar namenode configuration. >> >> >> 1. Which IP will be given to the Datanoe fs.default.name ? >> 2. Is there any good method other than avatar available for Backup namenode ? >> >> >> >> Regards, >> >> Shanmuganathan >> >> >> >
