Also, What is the balancer configured on your cluster? Which HBase version? If you have a 200 region table in a cluster with another pretty small 13 region table like the one you have, chances are high for this 2nd table to not be perfectly balanced over the cluster compared to the first one.
JM 2014-10-02 13:30 GMT-04:00 Nick Dimiduk <[email protected]>: > Is the balancer running? If it's running but unable to act, you should see > some explanation in the Master logs. > > On Wed, Oct 1, 2014 at 8:27 PM, Tao Xiao <[email protected]> wrote: > > > Hi all, > > > > I have a HBase table containing 40 million records. Checking HBase UI, I > > could see that this table was not spread evenly across the cluster. Two > > nodes, *ec1.hadoop.com:60020 <http://ec1.hadoop.com:60020>* and > > *ec5.hadoop.com:60020 > > <http://ec5.hadoop.com:60020>*, for example, has only one region each, > > while other nodes have more regions. Here is the screen shot > > <http://imgbin.org/index.php?page=image&id=19571>. > > > > I tried to split that table by clicking the button "Split". Later, each > > region of that table was split into two regions, but all regions for that > > table as a whole were still unevenly spread across the cluster. Here > > is a screen > > shot after I click the button "Split" > > <http://imgbin.org/index.php?page=image&id=19572>. > > > > So I'd like to know how to adjust the regions for a table so that all > > regions for that table can be evenly spread across the cluster. > > > > Thanks > > >
