[GitHub] [pulsar] sijie commented on a change in pull request #3876: Add the multi version schema support

[GitBox <gi...@apache.org>]

sijie commented on a change in pull request #3876: Add the multi version schema support
URL: https://github.com/apache/pulsar/pull/3876#discussion_r267674612
 
 

 ##########
 File path: pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerImpl.java
 ##########
 @@ -152,6 +155,17 @@
     static <T> ConsumerImpl<T> newConsumerImpl(PulsarClientImpl client, String topic, ConsumerConfigurationData<T> conf,
                  ExecutorService listenerExecutor, int partitionIndex, CompletableFuture<Consumer<T>> subscribeFuture,
                  SubscriptionMode subscriptionMode, MessageId startMessageId, Schema<T> schema, ConsumerInterceptors<T> interceptors) {
+        if(schema instanceof AvroSchema && schema.supportSchemaVersioning()){
+            Map<String, MultiVersionSchema> multiVersionSchemaCatch = client.getMultiVersionSchemaCatch();
+            if(multiVersionSchemaCatch.get(topic) != null){
 
 Review comment:
   ```suggestion
               MultiVersionSchema schema = multiVersionSchemaCache.get(topic);
               if(schema == null) {
                  ...
               }
   ```

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