On Thu, 2011-03-17 at 00:19 +0530, Harsh J wrote: > On Thu, Mar 17, 2011 at 12:42 AM, Marcos Ortiz <mlor...@uci.cu> wrote: > > 2011-03-15 01:18:44,468 INFO org.apache.hadoop.mapred.JobTracker: > > problem cleaning system directory: > > hdfs://localhost:9000/cygwin/usr/local/hadoop-datastore/hadoop-Baran/mapred/system > > org.apache.hadoop.ipc.RemoteException: > > org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot > > delete /cygwin/usr/local/hadoop-datastore/hadoop-Baran/mapred/system. > > Name node is in safe mode. > > Marcos, the JT keeps attempting to clear the mapred.system.dir on the > DFS at startup, and fails because the NameNode wasn't ready when it > tried (and thereby reattempts after a time, and passes later when NN > is ready for some editing action). This is mostly because Baran is > issuing a start-all/stop-all instead of a simple start/stop of mapred > components. > Thanks a lot, Harsh for the response. I think that's a good entry to add to the Problems/Solutions section on the Hadoop Wiki.
Regards -- Marcos Luís Ortíz Valmaseda Software Engineer Centro de Tecnologías de Gestión de Datos (DATEC) Universidad de las Ciencias Informáticas http://uncubanitolinuxero.blogspot.com http://www.linkedin.com/in/marcosluis2186
