Ngone51 commented on a change in pull request #28864:
URL: https://github.com/apache/spark/pull/28864#discussion_r442880517



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File path: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
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@@ -226,9 +226,9 @@ private[spark] class BlockManager(
   private val maxFailuresBeforeLocationRefresh =
     conf.get(config.BLOCK_FAILURES_BEFORE_LOCATION_REFRESH)
 
-  private val slaveEndpoint = rpcEnv.setupEndpoint(
+  private val replicaEndpoint = rpcEnv.setupEndpoint(

Review comment:
       This only a common BlockManager at executor side. Why it has to be 
specific to 'replica'?  Besides, block replication also is disabled by default. 
 Therefore, it also doesn't make sense to me to change the name form 
'BlockManagerSlaveEndpoint' to 'BlockManagerReplicaEndpoint' if we're searching 
a synonyms for 'Slave'.
   
   It probably if you're meaning 'primary/replica' but just could easily get 
confused with block replication.




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