"Do the maptasks go to hbase?" No it doesn't. Only the reducetasks go to hbase.
" At what point in the reduce do you see the above? IIRC only at the post 66% does reduce start entering data into hbase. If you are beyond this point, something else is up. Try thread dumping a child task or adding debugging to try narrow in on where the holdup." I this until %66. After this I see only some requests. My problem is that the job is slower with 4 cluster then no cluster. Regards Musa -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Stack Sent: Wednesday, March 09, 2011 9:50 PM To: [email protected] Cc: Cavus,M.,Fa. Post Direkt Subject: Re: Job is faster with not cluster than 4 cluster On Wed, Mar 9, 2011 at 1:57 AM, Cavus,M.,Fa. Post Direkt <[email protected]> wrote: > Hi, > I don't have problems on maptasks. Do the maptasks go to hbase? > Here are what am I see on my Web Interface: > > Region Servers > Address Start Code Load > slave1.local:60030 1298907779615 requests=0, regions=16, usedHeap=240, > maxHeap=8183 > slave2.local:60030 1298907780330 requests=0, regions=16, usedHeap=307, > maxHeap=8183 > slave3.local:60030 1298907778882 requests=0, regions=15, usedHeap=246, > maxHeap=8183 > slave4.local:60030 1298907780059 requests=0, regions=16, usedHeap=413, > maxHeap=8183 > Total: servers: 4 requests=0, regions=63 > At what point in the reduce do you see the above? IIRC only at the post 66% does reduce start entering data into hbase. If you are beyond this point, something else is up. Try thread dumping a child task or adding debugging to try narrow in on where the holdup. St.Ack
