Ok. So each time I move a region manually, I'm better to run a minor compaction to make sure data is moved locally too.
Got it. Thanks, JM 2012/12/3, Kevin O'dell <[email protected]>: > JM, > > If you have disabled the balancer and are manually moving regions, you > will need to run a compaction on those regions. That is the only(logical) > way of bringing the data local. HDFS does not have a concept of HBase > locality. HBase locality is all managed through major and minor > compactions. > > On Mon, Dec 3, 2012 at 10:04 AM, Jean-Marc Spaggiari < > [email protected]> wrote: > >> Hi, >> >> I'm wondering who is taking care of the data locality. Is it hadoop? Or >> hbase? >> >> Let's say I have disabled the load balancer and I'm manually moving a >> region to a specific server. Who is going to take care that the data >> is going to be on the same datanode as the regionserver I moved the >> region to? Is hadoop going to see that my region is now on this region >> server and make sure my data is moved there too? Or is hbase going to >> ask hadoop to do it? >> >> Or, since I moved it manually, there is not any data locality guaranteed? >> >> Thanks, >> >> JM >> > > > > -- > Kevin O'Dell > Customer Operations Engineer, Cloudera >
