Allow maximum cell count to be configurable to be higher than default 100000 using JVM parameter

Environment

Confluence 6.15.1

Description

It is not possible to open xls file with row count than 100000. There is currently a -Dofficeconnector.spreadsheet.xlsxmaxsize JVM parameter which allows admins to configure the maximum file size but the file must still have fewer than 100,000 cells which is not configurable. It would be nice to provide a configuration option to open files that have more than 100,000 cells.

The limit is set in the SpreadsheetConverter class in the document-conversion-library.

Symptoms

• Error message is displayed:

  We can't preview this file. 
  You'll have to download the file to view it.
  

• Logs contain following error:

  Error rendering macro 'viewxls' : com.benryan.conversion.ConversionException: Cannot convert spreadsheet, the number of cells: 196605 is greater than the maximum allowed cells: 100000
  

Workaround

Currently there is no known workaround for this behaviour. A workaround will be added here when available.