[PDFBOX-3830] multipdf.PDFMergerUtility error handling large documents

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.0.6
• Component/s: Utilities
• Assignee: Unassigned
• Reporter: Jens Henrik Rauff Hansen
• Created: 15/Jun/17 07:25
• Updated: 19/Jun/17 07:39
• Resolved: 15/Jun/17 15:29

Description

org.apache.pdfbox.multipdf.PDFMergerUtility are having problems merging large documents.

I have folowing method and testcase:

public static File mergePdfFiles(List<File> files, File outputFile) throws IOException {
		PDFMergerUtility merger = new PDFMergerUtility();
		merger.setDestinationStream(new FileOutputStream(outputFile));
		for (Iterator<File> fileIt = files.iterator(); fileIt.hasNext();) {
			merger.addSource(fileIt.next().getAbsolutePath());
		}
		merger.mergeDocuments(MemoryUsageSetting.setupMixed(30000000));
		//		merger.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());
		//		merger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
		return outputFile;
	}

@Test
	public void test() {
		File outputFile;
		try {
			outputFile = File.createTempFile("PDFMergerTest", ".pdf");

			List<File> files = new ArrayList<File>();
			files.add(new File("src/test/resources/06.pdf"));
			files.add(new File("src/test/resources/062.pdf"));
			int totalPageCount = 0;
			for (File file : files) {
				totalPageCount += PDFUtil.countPages(file);
			}
			PDFMerger.mergePdfFiles(files, outputFile);
			assertEquals("Page numbers match", totalPageCount, PDFUtil.countPages(outputFile));
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
	}

This does for all three MemoryUsageSetting "setupMainMemoryOnly(), setupTempFileOnly(), setupMixed(30000000)" return the the following error:

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running dk.dataproces.utilities.pdf.test.PDFMergerTest
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.223 sec <<< FAILURE!
test(dk.dataproces.utilities.pdf.test.PDFMergerTest) Time elapsed: 1.179 sec <<< ERROR!
java.lang.StackOverflowError
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:76)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:108)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:136)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:99)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:136)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:99)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:136)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:99)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:136)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:99)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:136)
at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneForNewDocument(PDFCloneUtility.java:99)
....................................AND THIS GOES ON FOR LONG IN THE CONSOLE