StephanEwen commented on a change in pull request #12683:
URL: https://github.com/apache/flink/pull/12683#discussion_r440885165



##########
File path: flink-python/pyflink/datastream/state_backend.py
##########
@@ -637,11 +637,11 @@ def set_options(self, options_factory_class_name):
                                            The options factory must have a 
default constructor.
         """
         gateway = get_gateway()
-        JOptionsFactory = 
gateway.jvm.org.apache.flink.contrib.streaming.state.OptionsFactory
+        JOptionsFactory = 
gateway.jvm.org.apache.flink.contrib.streaming.state.RocksDBOptionsFactory
         j_options_factory_clz = load_java_class(options_factory_class_name)
         if not 
get_java_class(JOptionsFactory).isAssignableFrom(j_options_factory_clz):
-            raise ValueError("The input class not implements OptionsFactory.")
-        
self._j_rocks_db_state_backend.setOptions(j_options_factory_clz.newInstance())
+            raise ValueError("The input class not implements 
RocksDBOptionsFactory.")

Review comment:
       This should be "The input class does not implement RocksDBOptionsFactory"




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