Hi We just started implemented hadoop on our system for the first time(Cloudera CDH3u2 )
After reformatting a namenode for a few times, DataNode is not coming up with error "Incompatible namespaceIDs" I found a note on this http://pages.cs.brandeis.edu/~cs147a/lab/hadoop-troubleshooting/ but I'm really not sure about removing data node directories. How is it possible that data will not be lost? I have to do it on all datanodes... Please explain me how all this reformat tasks preserves user's data ? -- View this message in context: http://old.nabble.com/Incompatible-namespaceIDs-after-formatting-namenode-tp33142065p33142065.html Sent from the Hadoop core-user mailing list archive at Nabble.com.
