Make mesh_tensorflow's call of get_replicated_var_handle backward-compatible with tf <= 2.8.0. Fixes google-research/text-to-text-transfer-transformer#1020.

PiperOrigin-RevId: 448301001

Author: adarob

mesh_tensorflow/tpu_variables.py

@@ -20,6 +20,7 @@
 from __future__ import print_function
 
 import contextlib
+import inspect
 
 # pylint: disable=g-direct-tensorflow-import
 from tensorflow.python.framework import ops
@@ -82,9 +83,13 @@ def handle(self):
     if tpu_context is None:
       return self._primary_var.handle
 
-    # Using variable name as handle id.
-    return tpu_context.get_replicated_var_handle(self._name, self._name,
-                                                 self._vars)
+    # TODO(adarob): Remove backward-compatibility when TF 2.10 is released.
+    if 'handle_id' not in inspect.signature(
+        tpu_context.get_replicated_var_handle).parameters:
+      return tpu_context.get_replicated_var_handle(
+          name=self._name, vars_=self._vars)
+    return tpu_context.get_replicated_var_handle(
+        name=self._name, handle_id=self._name, vars_=self._vars)
 
   @contextlib.contextmanager
   def _assign_dependencies(self):

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name='mesh-tensorflow',
-    version='0.1.20',
+    version='0.1.21',
     description='Mesh TensorFlow',
     author='Google Inc.',
     author_email='[email protected]',