RE: region server down when scanning using mapreduce

2013-03-12 Thread Azuryy Yu
t; > No, does block cache matter? Btw, the mr dump is a mr program we > > implemented rather than the hbase tool. > > > > Thanks > > > > -Original Message- > > From: Azuryy Yu [mailto:azury...@gmail.com] > > Sent: Tuesday, March 12, 2013 1:18 PM

RE: region server down when scanning using mapreduce

2013-03-12 Thread Anoop Sam John
@hbase.apache.org Subject: RE: region server down when scanning using mapreduce We turned the block cache to false and tried again, regionserver still crash one after another. There are a lot of scanner lease time out, and then master log info: RegionServer ephemeral node deleted, processing

RE: region server down when scanning using mapreduce

2013-03-12 Thread Lu, Wei
block cache Thanks -Original Message- From: Azuryy Yu [mailto:azury...@gmail.com] Sent: Tuesday, March 12, 2013 1:41 PM To: user@hbase.apache.org Subject: Re: region server down when scanning using mapreduce please read here http://hbase.apache.org/book.html (11.8.5. Block Cache) to get

Re: region server down when scanning using mapreduce

2013-03-11 Thread Azuryy Yu
> Thanks > > -Original Message- > From: Azuryy Yu [mailto:azury...@gmail.com] > Sent: Tuesday, March 12, 2013 1:18 PM > To: user@hbase.apache.org > Subject: Re: region server down when scanning using mapreduce > > did you closed block cache when you used mr dump? > On

RE: region server down when scanning using mapreduce

2013-03-11 Thread Lu, Wei
No, does block cache matter? Btw, the mr dump is a mr program we implemented rather than the hbase tool. Thanks -Original Message- From: Azuryy Yu [mailto:azury...@gmail.com] Sent: Tuesday, March 12, 2013 1:18 PM To: user@hbase.apache.org Subject: Re: region server down when scanning

Re: region server down when scanning using mapreduce

2013-03-11 Thread Azuryy Yu
did you closed block cache when you used mr dump? On Mar 12, 2013 1:06 PM, "Lu, Wei" wrote: > Hi, > > When we use mapreduce to dump data from a pretty large table on hbase. One > region server crash and then another. Mapreduce is deployed together with > hbase. > > 1) From log of the region serve