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[SPARK-15541] Casting ConcurrentHashMap to ConcurrentMap (master branch) #14459

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[SPARK-15541] Casting ConcurrentHashMap to ConcurrentMap (master branch) #14459

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8 changes: 5 additions & 3 deletions core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@

package org.apache.spark.rpc.netty

import java.util.concurrent.{ConcurrentHashMap, LinkedBlockingQueue, ThreadPoolExecutor, TimeUnit}
import java.util.concurrent.{ConcurrentHashMap, ConcurrentMap, LinkedBlockingQueue, ThreadPoolExecutor, TimeUnit}
import javax.annotation.concurrent.GuardedBy

import scala.collection.JavaConverters._
Expand All @@ -42,8 +42,10 @@ private[netty] class Dispatcher(nettyEnv: NettyRpcEnv) extends Logging {
val inbox = new Inbox(ref, endpoint)
}

private val endpoints = new ConcurrentHashMap[String, EndpointData]
private val endpointRefs = new ConcurrentHashMap[RpcEndpoint, RpcEndpointRef]
private val endpoints: ConcurrentMap[String, EndpointData] =
new ConcurrentHashMap[String, EndpointData]
private val endpointRefs: ConcurrentMap[RpcEndpoint, RpcEndpointRef] =
new ConcurrentHashMap[RpcEndpoint, RpcEndpointRef]

// Track the receivers whose inboxes may contain messages.
private val receivers = new LinkedBlockingQueue[EndpointData]
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