message: Exclude VALAN kernels from single threaded execution.
diff: @@ -944,12 +944,13 @@ bool IsOpSingleThreadedExecutorCompatible(const Node& n) {
  return false;
  }
  }
  - if (str_util::StrContains(n.op_def().name(), "PyFunc")) {
  - return false;
  - }
  - if (str_util::StrContains(str_util::Lowercase(n.op_def().name()), "grpc")) {
  + std::string lower = str_util::Lowercase(n.op_def().name());
  + if (str_util::StrContains(lower, "pyfunc") ||
  + str_util::StrContains(lower, "queue") ||
  + str_util::StrContains(lower, "rpc")) {
  return false;
  }
  +
  return true;
  }
  