update is binlog sync

Author: Windfarer

src/__init__.py

@@ -225,7 +225,7 @@ def _binlog_loader(self):
  """
  read row from binlog
  """
- if self.log_file and self.log_pos:
+ if self.is_binlog_sync:
  resume_stream = True
  logging.info("Resume from binlog_file: {file} binlog_pos: {pos}".format(file=self.log_file,
  pos=self.log_pos))