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The following commit(s) were added to refs/heads/master by this push:
     new 94f12b8  AVRO-2147. Java Protobuf: use schema cache to improve 
performance. (Tobi Vollebregt via cutting)
94f12b8 is described below

commit 94f12b85c3d269cdb510f8c0b843008469e4f826
Author: Doug Cutting <cutt...@apache.org>
AuthorDate: Fri Mar 2 14:20:50 2018 -0800

    AVRO-2147. Java Protobuf: use schema cache to improve performance. (Tobi 
Vollebregt via cutting)
---
 .../src/main/java/org/apache/avro/protobuf/ProtobufData.java  | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git 
a/lang/java/protobuf/src/main/java/org/apache/avro/protobuf/ProtobufData.java 
b/lang/java/protobuf/src/main/java/org/apache/avro/protobuf/ProtobufData.java
index e351422..b07b7f3 100644
--- 
a/lang/java/protobuf/src/main/java/org/apache/avro/protobuf/ProtobufData.java
+++ 
b/lang/java/protobuf/src/main/java/org/apache/avro/protobuf/ProtobufData.java
@@ -158,10 +158,17 @@ public class ProtobufData extends GenericData {
 
   @Override
   protected Schema getRecordSchema(Object record) {
-    return getSchema(((Message)record).getDescriptorForType());
+    Descriptor descriptor = ((Message)record).getDescriptorForType();
+    Schema schema = schemaCache.get(descriptor);
+
+    if (schema == null) {
+      schema = getSchema(descriptor);
+      schemaCache.put(descriptor, schema);
+    }
+    return schema;
   }
 
-  private final Map<Class,Schema> schemaCache
+  private final Map<Object,Schema> schemaCache
     = new ConcurrentHashMap<>();
 
   /** Return a record schema given a protobuf message class. */

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