td-agent stop emitting the log after rate limit exceeds

[hmlmail]

Hi, we limit the application access log to 1 log per second(see below config), but the td-agent stops emitting the logs completely instead of emitting expected 1 log per second. Is this a known issue or we have the wrong settings?

Thank you!!

<filter access.log>
  @type throttle
  group_key path
  group_bucket_period_s   1
  group_bucket_limit    1
  group_reset_rate_s     1
</filter>