Have a look at the master log, it's usually because a region is stuck in transition or it's still processing (or think it's processing) a dead server.
J-D On Mon, Sep 12, 2011 at 3:10 PM, Jeff Whiting <je...@qualtrics.com> wrote: > Any hints as to why the balancer isn't running automatically. I'll have a > situation like the one below: > > ds1.dev.qualtrics.com:60030 1315865095639 requests=0, regions=0, > usedHeap=35, maxHeap=795 > ds2.dev.qualtrics.com:60030 1315865040205 requests=0, regions=0, > usedHeap=41, maxHeap=795 > ds3.dev.qualtrics.com:60030 1315841275719 requests=45, regions=23, > usedHeap=77, maxHeap=795 > ds4.dev.qualtrics.com:60030 1315841273112 requests=5, regions=23, > usedHeap=359, maxHeap=795 > > In the hbase shell I check that the balancer is supposed to be running. > > hbase(main):004:0> balance_switch true > true > 0 row(s) in 0.9360 seconds > > It is. But it wont balance the regions until I run: > > hbase(main):007:0> balancer > false > 0 row(s) in 0.1000 seconds > > Then everything looks good: > ds1.dev.qualtrics.com:60030 1315865095639 requests=0, regions=11, > usedHeap=40, maxHeap=795 > ds2.dev.qualtrics.com:60030 1315865040205 requests=3, regions=11, > usedHeap=44, maxHeap=795 > ds3.dev.qualtrics.com:60030 1315841275719 requests=0, regions=12, > usedHeap=83, maxHeap=795 > ds4.dev.qualtrics.com:60030 1315841273112 requests=1, regions=12, > usedHeap=349, maxHeap=795 > > Is there a place I should be looking to see why the balancer isn't running > automatically? > > Thanks, > ~Jeff > > -- > Jeff Whiting > Qualtrics Senior Software Engineer > je...@qualtrics.com > >
