dssm train

recommend-model-produce/pom.xml

@@ -25,6 +25,11 @@
     </properties>
 
     <dependencies>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java</artifactId>
+            <version>3.24.0</version>
+        </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
             <artifactId>spark-core_2.12</artifactId>