Word Doc w/ Embeded Excel Chart Causes Memory Issues

Issue Summary

When adding the Word Doc macro to display a Word document which contains a copy of an Excel chart with a logarithmic scale, Confluence will encounter slow performance issues and encounter a Java Heap issue after saving the page with the Word document.

UPDATE: This bug can also occur when viewing directly an Excel file with logarithmic scale attached to a page or any office file that contains an Excel file with logarithmic scale.

Steps to Reproduce

1. Create a Word Document and embed an Excel chart with a logarithmic scale.
2. Upload file as an attachment to any Confluence Space (this alone will not cause the issue)
3. Use the View Doc (Word ver) macro to display (not link) the Word Document on any page
4. Save Page

Expected Results

Once saved, the Confluence page should show the contents of the Word Document on the page.

Actual Results

A Java Heap error will display on the page, causing slow performance on the instance. The following is shown in the logs:

2019-03-14 15:09:27,901 ERROR [http-nio-8090-exec-8] [xhtml.view.macro.ViewMacroMarshaller] handleMacroExecutionException Error rendering macro: viewdoc
 -- url: /display/TT/test | page: 1998878 | traceId: b1461380347c5209 | userName: admin | referer: http://localhost:8090/pages/editpage.action?pageId=19
98878 | action: viewpage
java.lang.OutOfMemoryError: Java heap space

Notes

• Increasing the available memory the max allowed by the environment still causes the issue.
• The problem is not encountered if a normal chart is used in the word document.
• The problem word docs fairly small in size. Example of a doc that causes the issue:
  • Word-Doc-Problematic.docx

Workaround

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