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https://issues.apache.org/jira/browse/PDFBOX-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16389126#comment-16389126
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Tilman Hausherr edited comment on PDFBOX-4144 at 3/7/18 8:54 AM:
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Please read the related issues I just attached.


was (Author: tilman):
Please read the related issue I just attached.

> 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
>            Priority: Major
>
> I have written a program that accepts pdf and convert it to image. Please see 
> the below code for your reference.
> {code:java}
> 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();
>  
> {code}
> 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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