I am going to restart hadoop cluster in order to enable rack-awareness
Currently we're running 0.20.203 with 500TB of data on 250+ nodes
I am thinking and afraid that when i start dfs (with rack-awareness
enable) the HDFS will be in safemode for hours
busy with relocating block to comply with rack-awareness.
Anything knob i can dial to prevent that ?
Thanks in advances
John Meagher 2012-03-20, 20:27
Patai Sangbutsarakum 2012-03-20, 20:38
Harsh J 2012-03-20, 21:44
Patai Sangbutsarakum 2012-03-20, 23:19
Patai Sangbutsarakum 2012-03-22, 17:36
John Meagher 2012-03-22, 17:40
Patai Sangbutsarakum 2012-03-22, 17:55