Lin Yiqun created HDFS-9375:
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Summary: Set balancer bandwidth for specific node
Key: HDFS-9375
URL: https://issues.apache.org/jira/browse/HDFS-9375
Project: Hadoop HDFS
Issue Type: Improvement
Components: balancer & mover
Affects Versions: 2.7.1
Reporter: Lin Yiqun
Assignee: Lin Yiqun
Now even though the balancer is impove a lot, but In some cases that is still
slow. For example when the cluster is extended,the new nodes all need balancer
datas from existed nodes.In order to improve the balancer velocity,generally,we
will use {{setBalancerBandwidth}} of {{dfsadmin}} command.But this is set for
every node, obviously,we can increase more bandwidth for new nodes because
these nodes lacking of data.When the new nodes balancer data enough,we can let
new nodes to work.So we can define a new clientDatanode interface to set
specific node's bandwidth.
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