Revert "[Streaming] Fault Tolerance Implementation (#10008)" (#10582)

This reverts commit 1b1466748f.

streaming/python/runtime/processor.py

@@ -23,14 +23,6 @@ class Processor(ABC):
     def close(self):
         pass
 
-    @abstractmethod
-    def save_checkpoint(self):
-        pass
-
-    @abstractmethod
-    def load_checkpoint(self, checkpoint_obj):
-        pass
-
 
 class StreamingProcessor(Processor, ABC):
     """StreamingProcessor is a process unit for a operator."""
@@ -48,13 +40,7 @@ class StreamingProcessor(Processor, ABC):
         logger.info("Opened Processor {}".format(self))
 
     def close(self):
-        self.operator.close()
-
-    def save_checkpoint(self):
-        self.operator.save_checkpoint()
-
-    def load_checkpoint(self, checkpoint_obj):
-        self.operator.load_checkpoint(checkpoint_obj)
+        pass
 
 
 class SourceProcessor(StreamingProcessor):
@@ -66,8 +52,8 @@ class SourceProcessor(StreamingProcessor):
     def process(self, record):
         raise Exception("SourceProcessor should not process record")
 
-    def fetch(self):
-        self.operator.fetch()
+    def run(self):
+        self.operator.run()
 
 
 class OneInputProcessor(StreamingProcessor):