Better to use docker log time as fluentd record time in DB table?

Current DB record time is from fluentd: https://github.com/microsoft/pai/blob/3de6ad16b14ef8429f72eea1872e4de9498bab3e/src/fluentd/src/fluent-plugin-pgjson/lib/fluent/plugin/out_pgjson.rb#L208

For more precise, we can use the docker log time, i.e. the below collectTime

    # FC Docker Container Log:
    # {"log":"I1024 12:14:54.903623      11 controller.go:1382] [default/efkt168][worker][0]: syncTaskState: Task will be retried: ObjectSnapshot: {\"kind\":\"Framework\"}\n",
    # "stream":"stderr",
    # "time":"2019-10-24T12:14:54.9037283Z"}

    # Add collectTime
    <filter fc-objectsnapshots>
      @type record_transformer
      enable_ruby true
      <record>
        collectTime ${record['time']}
      </record>
    </filter>