Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/18639#discussion_r127898848
--- Diff: core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
---
@@ -33,7 +33,7 @@ import org.apache.spark.util.ThreadUtils
/**
* A message dispatcher, responsible for routing RPC messages to the
appropriate endpoint(s).
*/
-private[netty] class Dispatcher(nettyEnv: NettyRpcEnv) extends Logging {
+private[netty] class Dispatcher(nettyEnv: NettyRpcEnv, numUsableCores:
Int) extends Logging {
--- End diff --
Should we document the behavior when `numUsableCores` is set to 0 in the
comment above?
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