You have a custom Jaspersoft Studio Report that was working perfectly fine in Jaspersoft 7.8, When you upgraded to Jaspersoft 8.1 the same report is failing when try to run immediately or when you schedule with the same exact parameter
Error Message:
AsyncJasperPrintAccessor,pool-9-thread-4:321 [] - Error during report execution
net.sf.jasperreports.governors.MaxPagesGovernorException: Report "XYZ" exceeded the limit of 1,000 maximum pages.
The XYZ report failing is due to only showing 10 records on each page instead of 50 records in Jaspersoft 7.8
The report was created in Jaspersoft Studio 6.8 and due to element properties in the report template might behave differently after a JasperReports engine (JRL used by JRS or JSS) upgrade
Note: If the 2nd workaround doesn't work then please proceed with the first one.