What do you see when you use 'ps aux | grep <pid>' command ? A sample is shown below:
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND tyu 16468 232.2 1.4 4974136 240528 s002 R+ 4:05PM 2:11.15 /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/javadoc -J-Xmx2048m @options @packages Please give us the VSZ and RSS readings. Thanks On Wed, Feb 20, 2013 at 3:56 PM, Joarder KAMAL <[email protected]> wrote: > Sorry may be I didn't clarify the question properly. > > Q2. As per the default setting maxHeapMB size is 991, so in saturation > condition HBase can't use more RAM (even if it is available, for example > the system memory size is 4GB) than this defined size, is it right? > > > Many thanks again... > > On 21 February 2013 10:48, Ted Yu <[email protected]> wrote: > > > 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 > > > > > > > > > > > > > > > > > > > >
