zhtttylz commented on code in PR #4868:
URL: https://github.com/apache/hadoop/pull/4868#discussion_r1227444307


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java:
##########
@@ -804,6 +804,9 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
   public static final long    DFS_MOVER_MOVEDWINWIDTH_DEFAULT = 5400*1000L;
   public static final String  DFS_MOVER_MOVERTHREADS_KEY = 
"dfs.mover.moverThreads";
   public static final int     DFS_MOVER_MOVERTHREADS_DEFAULT = 1000;
+  public static final String  DFS_DATANODE_MOVER_MAX_NUM_CONCURRENT_MOVES_KEY =
+      "dfs.datanode.mover.max.concurrent.moves";
+  public static final int     
DFS_DATANODE_MOVER_MAX_NUM_CONCURRENT_MOVES_DEFAULT = 10;

Review Comment:
   Should the default value of "**dfs.datanode.mover.max.concurrent.moves**" be 
consistent with "**dfs.datanode.balance.max.concurrent.moves**" at 100?



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