message: Change sys.maxint to -1 in hook.py
diff: @@ -335,7 +335,7 @@ class TensorBoardDebugHook(GrpcDebugHook):
  log_usage=log_usage)
  self._grpc_debug_server_addresses = grpc_debug_server_addresses
  - self._sent_graph_version = -sys.maxint
  + self._sent_graph_version = -1
  def before_run(self, run_context):
  self._sent_graph_version = grpc_wrapper.publish_traceback(
  