farmmamba created HDFS-17245:
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Summary: Add getAverageLoadOneMinute RPC in ClientDatanodeProtocol.
Key: HDFS-17245
URL: https://issues.apache.org/jira/browse/HDFS-17245
Project: Hadoop HDFS
Issue Type: New Feature
Components: datanode
Reporter: farmmamba
Fix For: 3.4.0
I think we should add a getAverageLoadOneMinute RPC in ClientDatanodeProtocol
to get the average load of the datanode in recent one minute.
We can use this RPC in HDFS client side and other places. For example, in
method addDatanode2ExistingPipeline. We can choose the datanode with less
average load as source datanode and then transfer block to new datanode which
is added to existed pipeline.
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