Fix SpotBugs.

apache · Apr 24, 2019 · 3b6db54 · 3b6db54
1 parent df03a2e
commit 3b6db54
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/annotations/DefaultSchema.java b/sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/annotations/DefaultSchema.java
@@ -19,6 +19,7 @@
 
 import static org.apache.beam.vendor.guava.v20_0.com.google.common.base.Preconditions.checkArgument;
 
+import java.io.Serializable;
 import java.lang.annotation.Documented;
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
@@ -73,7 +74,7 @@
  class DefaultSchemaProvider implements SchemaProvider {
  final Map<TypeDescriptor, ProviderAndDescriptor> cachedProviders = Maps.newConcurrentMap();
 
- private static final class ProviderAndDescriptor {
+ private static final class ProviderAndDescriptor implements Serializable {
  final SchemaProvider schemaProvider;
  final TypeDescriptor<?> typeDescriptor;