Sachin Mali created PDFBOX-4144:
-----------------------------------

             Summary: Pdf to image conversion not releasing memory after 
conversion
                 Key: PDFBOX-4144
                 URL: https://issues.apache.org/jira/browse/PDFBOX-4144
             Project: PDFBox
          Issue Type: Bug
          Components: Parsing, Rendering
    Affects Versions: 2.0.8
         Environment: Apache Tomcat/8.0.33, Linux, JDK 1.8  
            Reporter: Sachin Mali


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.

 



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