How to run hbase balancer given that I am using cloudera manager 4.1 Sent from my iPad
On Jan 2, 2013, at 9:13 PM, "Jeff Bean" <jwfb...@cloudera.com> wrote: > Hi Dalia, > > If all the regions are still on the first server you don't get the benefit > of the second server. Try running the hbase balancer after adding the > second server. Then check to make sure each server is serving the same > number of regions. > > Jeff > > On Wed, Jan 2, 2013 at 5:52 AM, Adam Smieszny <ad...@cloudera.com> wrote: > >> Redirecting to hbase-user >> >> Thanks, >> Adam >> >> >> On Tue, Jan 1, 2013 at 4:29 PM, Dalia Hassan <daliahass...@gmail.com>wrote: >> >>> Dear all, >>> >>> I am trying to test the performance of hbase by increasing number of >>> nodes. >>> >>> I am running a Java Program that uses Aggregate Implementation >>> Coprocessor i.e count the number of rows based on a specific filter. Then I >>> am testing by increasing the number of region servers will the time taken >>> to execute this program will less or not ? Suppose it will be. >>> >>> But unfortunately, it produces the same time. >>> >>> What I am doing actually is: >>> >>> 1. I have the number of rows to be 4 million. >>> 2. Then I ran the code, given that the cluster contains one region >>> server , the time was approximately 16 seconds. >>> 3. After that I added another region server to the cluster i.e so now >>> cluster has 2 region servers. >>> 4. By running the code, it took the same app 16 seconds. >>> >>> >>> So my question is what to do to feel the difference ? Also by adding a >>> second region server, will the 2 million records move to it ? If so, how >>> much time will it take ? >>> >>> Thanks, >>> >>> Waiting for your responses asap. >> >> >> >> -- >> Adam Smieszny >> Cloudera | Systems Engineer | http://www.linkedin.com/in/adamsmieszny >> 917.830.4156 >>
