[hotfix] [core] Add missing serialVersionUID to MapStateDescriptor

Project: http://git-wip-us.apache.org/repos/asf/flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/flink/commit/d766988b
Tree: http://git-wip-us.apache.org/repos/asf/flink/tree/d766988b
Diff: http://git-wip-us.apache.org/repos/asf/flink/diff/d766988b

Branch: refs/heads/master
Commit: d766988b28414c6e282c785a01b2fb6f4a4c21f6
Parents: 8c042e3
Author: Stephan Ewen <[email protected]>
Authored: Tue Mar 20 15:29:12 2018 +0100
Committer: Stephan Ewen <[email protected]>
Committed: Thu Mar 22 15:42:34 2018 +0100

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 .../java/org/apache/flink/api/common/state/MapStateDescriptor.java | 2 ++
 1 file changed, 2 insertions(+)
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http://git-wip-us.apache.org/repos/asf/flink/blob/d766988b/flink-core/src/main/java/org/apache/flink/api/common/state/MapStateDescriptor.java
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diff --git 
a/flink-core/src/main/java/org/apache/flink/api/common/state/MapStateDescriptor.java
 
b/flink-core/src/main/java/org/apache/flink/api/common/state/MapStateDescriptor.java
index 2e7ac98..087cb54 100644
--- 
a/flink-core/src/main/java/org/apache/flink/api/common/state/MapStateDescriptor.java
+++ 
b/flink-core/src/main/java/org/apache/flink/api/common/state/MapStateDescriptor.java
@@ -42,6 +42,8 @@ import java.util.Map;
 @PublicEvolving
 public class MapStateDescriptor<UK, UV> extends StateDescriptor<MapState<UK, 
UV>, Map<UK, UV>> {
 
+       private static final long serialVersionUID = 1L;
+
        /**
         * Create a new {@code MapStateDescriptor} with the given name and the 
given type serializers.
         *

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