Hello, Thank you for your replies. We are using CDH4 HBase 0.92. Good call on the web interface. The port is blocked so I never really got a chance to test it. As far as manual re-balancing is concerned I will check the book.
/David On Tue, Sep 4, 2012 at 5:34 PM, Guillaume Gardey < [email protected]> wrote: > Hello, > > > a) What is the easiest way to get an overview of how a table is > distributed > > across regions of a cluster? I guess I could search .META. but I haven't > > figured out how to use filters from shell. > > b) What constitutes a "badly distributed" table and how can I re-balance > > manually? > > c) Is b) needed at all? I know that HBase does its balancing > automatically > > behind the scenes. > > I have found that > http://bobcopeland.com/blog/2012/04/graphing-hbase-splits/ is a good > source of information/tools to look at regions balancing in the cluster and > investigate it. > > > As for a) I tried running this script: > > > > https://github.com/Mendeley/hbase-scripts/blob/master/list_regions.rb > > > > like so: > > > > hbase org.jruby.Main ./list_regions.rb <_my_table> > > > > but I get > > > > ArgumentError: wrong number of arguments (1 for 2) > > (root) at ./list_regions.rb:60 > > > > If someone more proficient notices an obvious fix, I'd be glad to hear > > about it. > > Concerning https://github.com/Mendeley/hbase-scripts , I am afraid that > this is a repository that is no longer maintained and was written for old > releases of hbase (cdh2 I believe). There's no plan to upgrade it to newer > releases. > > Cheers > --- > Guillaume
