David, You should indeed increase your hbase.regionserver.lease.period to at least 2 minutes.
J-D On Fri, Nov 21, 2008 at 4:55 AM, David Alves <[EMAIL PROTECTED]>wrote: > Hi > > I've seen this issue a lot in the mailing list, but I still have a > doubt. > My map tasks keep failing with unknownscannerexception (2 map tasks > on same node over a 3 node cluster with 4Gb mem, scanning almost 40 GBs of > data, running hadoop 0.18.0, and hbase 0.18.0), this happened in the past, > but as it passed 50% of the times rarely a M/R task completely failed, as > the data increased the USE now completely prevents the maps from running to > completion. I'm only scanning the table, there are no inserts at the same > time. > I've previouly seen mentioned a lease period I could increase. Is > this the "hbase.regionserver.lease.period" property? Should I upgrade to > hbase 0.18.1, and if so must I also update hadoop? > > Regards > David Alves > > >
