[PDFBOX-4041] Memory Leak while converting pdf to images

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 2.0.7
• Assignee: Unassigned
• Reporter: Ajit
• Created: 18/Dec/17 22:45
• Updated: 07/Mar/18 08:53
• Resolved: 13/Jan/18 19:57

Description

I am observing memory leak in PDF to images conversion simple program. I realise the PDF that I am converting is bit bigger in size.

Check the heap image and you will see that leak is happening even though I have flushed the buffered image and set it to null explicitly. I have also closed the document too.

If you notice the image, the process was running at 2 GBs in only two runs. I am not able to attach the heap, because of its bigger size. But note the image at the bottom and you will see that BufferedImage is taking about 500 MBs.

I have also provided the source code (few lines) and hoping I haven't done any stupid mistake.

• I have gone through getting started https://pdfbox.apache.org/2.0/getting-started.html and set -Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider -Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true the options. It does not help much
• Maven Dependencies - pdfbox-tools, jai-imageio-core, jai-imageio-jpeg2000, levigo-jbig2-imageio

There are some debug messages related to ScratchBuffer, I searched about it and it seems it is harmless. I came across the bug PDFBOX-3388. From the comments, It seems it is relevant but harmless.

Issue Links

• is related to: PDFBOX-4144 Pdf to image conversion not releasing memory after conversion
• relates to: PDFBOX-3700 OutOfMemoryException converting PDF to TIFF Images