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Lin Yiqun commented on HDFS-9375: --------------------------------- And I test the new {{-setBalancerBandwidth}} command by a dfsadmin way,the result is true. > 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 > Attachments: HDFS-9375.001.patch, HDFS-9375.002.patch, > HDFS-9375.003.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)