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Kihwal Lee commented on HDFS-9468: ---------------------------------- Why don't you make it refreshable? Some configs in datanode are already refreshable. > DfsAdmin command set dataXceiver count for datanode > --------------------------------------------------- > > Key: HDFS-9468 > URL: https://issues.apache.org/jira/browse/HDFS-9468 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Affects Versions: 2.7.1 > Reporter: Lin Yiqun > Assignee: Lin Yiqun > Attachments: HDFS-9468.001.patch > > > Now in every datanode,concurrent xceivers count value are all set by > {{DFSConfigKeys.DFS_DATANODE_MAX_RECEIVER_THREADS_DEFAULT}}.And if you want > to set this value for different values because some node has lower memory or > cores.Then you must to change the config and restart datanode.So may be we > can dynamic set dataxceiver count by a dfsadmin command and we can set value > for one or many specific nodes. -- This message was sent by Atlassian JIRA (v6.3.4#6332)