Do you know why the 3 nodes are down ? With replication, the copy of data
that were hosted on those failed nodes will not be available. However, the
data will still be served by the hosts having the other 2 copies - so I
don't think you need to copy the data again.
Unless for some reason the 3 copies of some data ended up on these nodes,
in which case those will not be available
Maybe you could do a ' hadoop fsck /' to confirm if the HDFS is healthy.
-Rajesh
On Wed, Feb 25, 2015 at 9:21 AM, tesm...@gmail.com tesm...@gmail.com
wrote:
Dear all,
I have transferred the data from local storage to HDFS in my 10 nodes
Hadoop cluster. The relication facotr is 3.
Some nodes, say 3, are not available after some time. I can't use those
nodes for computation or storage of data.
What will happen to the data stored on HDFS of those nodes?
Do I need to remvoe all the data from HDFS and copy it again?
Regards,
