[PDFBOX-4149] PDF consisting on one page with 5 MB renders until the end of time using renderImageWithDPI

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.8
• Fix Version/s: 2.0.14, 3.0.0 PDFBox
• Component/s: Rendering
• Assignee: Tilman Hausherr
• Reporter: Christian
• Created: 11/Mar/18 08:00
• Updated: 28/Feb/19 17:44
• Resolved: 06/Feb/19 16:44

Description

I am using PDFBOX 2.0.8 on a Java VM 1.8.0_151

The attached and valid pdf should be rendered by calling

BufferedImage bim = pdfRenderer.renderImageWithDPI(i, 50);

But the rendering never ends - the only thing I see is this line repeating very often in the console:

[Finalizer] DEBUG org.apache.pdfbox.io.ScratchFileBuffer - ScratchFileBuffer not closed!

Here is the code that is used to open the document and then start the rendering:

PDDocument document = PDDocument.load(file, MemoryUsageSetting.setupTempFileOnly());
try  {
   PDFRenderer pdfRenderer = new PDFRenderer(document);
   int numberOfPages = document.getPages().getCount();
   for (int i = 0; i < numberOfPages; i++) {
      BufferedImage bim = pdfRenderer.renderImageWithDPI(i, 50);
[...]

The line

BufferedImage bim = pdfRenderer.renderImageWithDPI(i, 50);

is never passed. I ran a test and have wait for 30 minutes to let it pass, but nothing happens.

Please advise what to do and how to solve the issue.