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hadoop balancer is running slow

hadoop balancer is running slow

New Contributor


My cluster has machines has 10GB/sec bandwidth speed.

I am trying to run balancer. The data balancing is so slow. It has balanced only 5TB in 10 hours. Could you please suggest the good recommendations for the balancer asap so that I can schedule for this weekend. Currently I am interested in the below properties.

1. Bandwidth for the balancer

2. dfs.datanode.balance.bandwidthPerSec

3. dfs.balancer.max-size-to-move

4. dfs.datanode.balance.max.concurrent.moves

5. dfs.balancer.moverThreads

Please let us know how to set these properties to get high speed. I also see sometimes socket timeout exception in the balancer logs

My current socket timeout exception is 1min.. Please suggest the recommendations asap.

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