CmapSubtable warnings (PDFBox)
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Issue
- In Liferay logs, the following warnings occur:
2019-08-30 07:49:23.393 WARN [default-4][CmapSubtable:185] Format 14 cmap table is not supported and will be ignored
Environment
Resolution
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The class which the WARN message above remarks is CmapSubtable, which is part of PDFBox.
It is very likely that a PDF file is triggering this warning message on the environment, which itself indicated by the fact: PDFBox does not support the rendering of the embedded TrueType font in a PDF. This is a limitation of PDFBox.
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Therefore, the following options may be considered:
- Safely ignore these warnings (if otherwise the PDF preview work as expected)
- Consider switching to OpenOffice/LibreOffice or ImageMagic based preview generation.
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