Hi, Ted here is the result of jps: yanglin@ubuntu:~$ jps 3286 TaskTracker 14053 Jps 2623 DataNode 2996 JobTracker 2329 NameNode 2925 SecondaryNameNode --- It seems that the DN is working.
And it is not failed immediately when enter the reduce phase, actually it always failed after processing some data 2012/9/24 Steve Loughran <[email protected]> > > > On 24 September 2012 15:47, Ted Reynolds <[email protected]> wrote: > >> Jason, >> >> The line in the JobTracker log - "Could only be replicated to 0 nodes, >> instead of 1" points to a problem with your data node. I generally means >> that your DataNode is either down or not functioning correctly. What is >> the output of the "jps" command? ("jps" is found in <JAVA_HOME>/bin). >> >> > > see also: http://wiki.apache.org/hadoop/CouldOnlyBeReplicatedTo > > -steve > -- YANG, Lin
