On Wed, Feb 29, 2012 at 11:34 PM, W.P. McNeill <[email protected]> wrote:
> I can do perform HDFS operations from the command line like "hadoop fs -ls > /". Doesn't that meant that the datanode is up? > No. It is just meta data lookup which comes from Namenode. Try to cat some file like "hadoop fs -cat " . Then if you are able get data then datanode should be up . Also make sure that hdfs is not in safemode . To turnoff safemode use hdfs command "hadoop dfsadmin -safemode leave" and then restart the jobtracker and tasktracker. -- Join me at http://hadoopworkshop.eventbrite.com/
