-Reg:HDFS Decommission Design Document.
Dhanasekaran Anbalagan 2013-06-13, 21:13
Where I find Decommission document. I need to know how decommission will
really works. Where I can find decommission logs.
How to understand decommission process:
I am planning to remove one of my Datanode in my cluster. I have already
Data available two other nodes. without data loss removing nodes.
% How to actual data moving or transferring other nodes.?
% When I start decommission the decommission initiated node send blocks to
% All the Blocks info will available in Namenode. NN will so replication
Also I am facing issue very low speed Decommissioning will happening.
for example I have data in 2TB it's take more than 50 hrs. It's quite
unnormal. I believe I configured
dfs.datanode.balance.bandwidthPerSec=1073741824 [1GB bytes per second]
How to debug, Please guide guys.
Did I learn something today? If not, I wasted it.
Chris Embree 2013-06-13, 23:46