Question

I am facing a big issue with PDFBOX: I tried to load a file of 10Mb (test.pdf) and i needed 400 Mb to load it on JVM:
Here is the code sample :

    final File mainFile = new File(
            "C:/test.pdf");
    System.out.println("File size: " + mainFile.length());
    try {
        PDDocument doc = PDDocument.load(mainFile);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    System.out.println("Used Memory: " +  (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()));
}

Is that normal ?

Answer 1

No, that is not normal.

I notice you hadn’t closed the document (required, please read the documentation). Perhaps that accumulated in multiple runs. You also don’t mention memory usage before loading the document.