Repository: spark
Updated Branches:
  refs/heads/branch-2.0 c5516ab60 -> fc18e259a


[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.bryn...@adpilot.pl>

Closes #14459 from maver1ck/spark-15541-master.

(cherry picked from commit 511dede1118f20a7756f614acb6fc88af52c9de9)
Signed-off-by: Sean Owen <so...@cloudera.com>


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/fc18e259
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/fc18e259
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/fc18e259

Branch: refs/heads/branch-2.0
Commit: fc18e259a311c0f1dffe47edef0e42182afca8e9
Parents: c5516ab
Author: Maciej Brynski <maciej.bryn...@adpilot.pl>
Authored: Tue Aug 2 08:07:08 2016 -0700
Committer: Sean Owen <so...@cloudera.com>
Committed: Tue Aug 2 08:07:18 2016 -0700

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 .../main/scala/org/apache/spark/rpc/netty/Dispatcher.scala   | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/fc18e259/core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
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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 @@ 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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