[SPARK-15541] Casting ConcurrentHashMap to ConcurrentMap (master branch)
## What changes were proposed in this pull request?
Casting ConcurrentHashMap to ConcurrentMap allows to run code compiled with Java 8 on Java 7
## How was this patch tested?
Compilation. Existing automatic tests
Author: Maciej Brynski <maciej.brynski@adpilot.pl>
Closes #14459 from maver1ck/spark-15541-master.
diff --git a/core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala b/core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
index d305de2..a02cf30 100644
--- a/core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
+++ b/core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
@@ -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._
@@ -42,8 +42,10 @@
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]
