So, we can assume that all blocks are fully replicated at the start point of HDFS?
Best, -- Nan Zhu School of Computer Science, McGill University On Tuesday, 29 January, 2013 at 10:50 PM, Chen He wrote: > Hi Nan > > Namenode will stay in safemode before all blocks are replicated. During this > time, the jobtracker can not see any tasktrackers. (MRv1). > > Chen > > On Tue, Jan 29, 2013 at 9:04 PM, Nan Zhu <[email protected] > (mailto:[email protected])> wrote: > > Hi, all > > > > I'm wondering if HDFS is stopped, and some of the machines of the cluster > > are moved, some of the block replication are definitely lost for moving > > machines > > > > when I restart the system, will the namenode recalculate the data > > distribution? > > > > Best, > > > > -- > > Nan Zhu > > School of Computer Science, > > McGill University > > > > >
