[PDFBOX-4144] Pdf to image conversion not releasing memory after conversion

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 2.0.8
• Component/s: Parsing, Rendering
• Environment: Apache Tomcat/8.0.33, Linux, JDK 1.8
• Flags: Important
• Assignee: Unassigned
• Reporter: Sachin Mali
• Created: 07/Mar/18 06:37
• Updated: 09/Mar/18 16:48
• Resolved: 09/Mar/18 16:48

Description

I have written a program that accepts pdf and convert it to image. Please see the below code for your reference.

ByteArrayInputStream ipStream = new ByteArrayInputStream(document.getFile().getBytes());
PDDocument documentUploaded = PDDocument.load(ipStream,MemoryUsageSetting.setupTempFileOnly());
             
         documentUploaded.setResourceCache(new MyResourceCache());

//Disabled a resource cache


         PDFRenderer pdfRenderer = new PDFRenderer(documentUploaded);
         int pageCounter = 0;
         for (PDPage page : documentUploaded.getPages())
         {         
            BufferedImage bim = pdfRenderer.renderImageWithDPI(pageCounter, 300, ImageType.RGB);   
             pageCounter = pageCounter + 1;

 

// Some code here

               bim.flush();
               bim = null;


         }
         documentUploaded.close();

 

After/Before conversion i printed heap size used by using Runtime.getRuntime().totalMemory() . Also I checked top command to see percentage of memory used.But in both cases the memory keeps increasing after each conversion and does not release used memory.After tomcat restart I get cleaned memory.

 

Issue Links

• relates to: PDFBOX-3376 Memory leak in PDDcoument.close method
• relates to: PDFBOX-4041 Memory Leak while converting pdf to images