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]> 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 > > >
