I am not familiar with monitoring tools on EC2. You can use Ganglia to monitor hadoop / HBase.
Cheers On Wed, Feb 20, 2013 at 3:42 PM, Joarder KAMAL <[email protected]> wrote: > Hi Ted, > > Thanks for the reply. > > Q1. Cleared now. Sorry I didn't count the -ROOT- and .META. tables > Q2. Not clear. Could explain a bit more? I am using the default setting. > > Thanks again. > > > On 21 February 2013 10:36, Ted Yu <[email protected]> wrote: > > > bq. but when I click to view the table details it shows there are 5 > > regions. > > > > Did you include -ROOT- and .META. tables above ? > > > > bq. as you can see the maxHeapMB size is 991 > > > > Attachment is automatically stripped from your email. FYI > > > > On Wed, Feb 20, 2013 at 3:26 PM, Joarder KAMAL <[email protected]> > wrote: > > > > > Dear All, > > > > > > I am currently running a 3 node HBase cluster with Amazon EC2 small > > > instance (1CPU, 1.7GB Mem). After running a simple workload (type A) > > using > > > YCSB benchmarking tool, I noticed in the Web UI that the number of > > regions > > > in the 3 region servers are 7 but when I click to view the table > details > > it > > > shows there are 5 regions. I am a bit confuse. Does the Web UI showing > > > wrong results? How can I check region details from the shell/is there > any > > > other command line tools for that? I am using Hbase 0.94.3 (as it is > the > > > latest version compatible with YCSB at this moment) with Hadoop-1.0.4. > > > > > > Another thing, as you can see the maxHeapMB size is 991 (default > setting) > > > then whenever I am running workloads the server free memory status is > > > terrible - almost 0MB for 1M/10M transactions (YCSB/Workload-A). My > > > question is if the maxHeapMB is fixed at 1GB then why I am loosing > extra > > > 700MB memory? How can I monitor cpu/memory/io usage for individual > > cluster > > > components (HBase/Hadoop/MapRed/ZK, etc.)? Is there any tool available > > with > > > HBase? > > > > > > Thanks a lot. > > > > > > > > > [image: Inline images 1] > > > > > > > > > Regards, > > > Joarder Kamal > > > > > > ------------------------------------------ > > > PhD Student > > > Gippsland School of Information Technology, > > > Faculty of Information Technology, > > > MONASH University > > > Churchill VIC, Australia. 3842 > > > > > > > > >
