public String getMaintenanceWindow() {
        return this.maintenanceWindow;
    }
<p>
This field specifies a day of the week and hour for a maintenance window for streaming jobs. Glue periodically
performs maintenance activities. During these maintenance windows, Glue will need to restart your streaming jobs.
</p>
<p>
Glue will restart the job within 3 hours of the specified maintenance window. For instance, if you set up the
maintenance window for Monday at 10:00AM GMT, your jobs will be restarted between 10:00AM GMT to 1:00PM GMT.
</p>

@return This field specifies a day of the week and hour for a maintenance window for streaming jobs. Glue
        periodically performs maintenance activities. During these maintenance windows, Glue will need to restart
        your streaming jobs.</p>
        <p>
        Glue will restart the job within 3 hours of the specified maintenance window. For instance, if you set up
        the maintenance window for Monday at 10:00AM GMT, your jobs will be restarted between 10:00AM GMT to
        1:00PM GMT.
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/JobRun.java