message: Update log level from fetal to error when loading the libhdfs.so failed
diff: @@ -241,7 +241,7 @@ class LibHDFS {
  if (TF_GetCode(status) == TF_OK) {
  return;
  } else {
  - TF_Log(TF_FATAL, "HadoopFileSystem load error: %s", TF_Message(status));
  + TF_Log(TF_ERROR, "HadoopFileSystem load error: %s", TF_Message(status));
  }
  }
  