Can a hadoop slave node be made hadoop master node without incurring data loss

0
votes

I have three node hadoop cluster. A B C

A Master

B slave

C slave

If i want to make C as master and the remaining as slaves will i face data loss or data corruption ?

1
hadoop

1 Answers

0
votes

you need to format the NameNode when initializing new cluster configuration. so yes you might lost files that are already in the HDFS.