Moving blocks from a datanode

[Mayuran Yogarajah <ma...@casalemedia.com>]

Our cluster has several nodes which have smaller disks than other nodes and
as a result fill up quicker.

I am looking to move data off these nodes and onto the others.

 

Here is what I am planning to do:

1)      On the nodes with smaller disks, set dfs.datanode.du.reserved to a
larger value

2)      Restart data nodes

3)      Run balancer

 

Will this have the desired effect? 

If there is a better way to accomplish this please let me know.

 

Thanks,

M