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https://issues.apache.org/jira/browse/PDFBOX-5068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17417980#comment-17417980
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Maruan Sahyoun commented on PDFBOX-5068:
----------------------------------------
[~lehmi] [~tilman] could you try a quick test for me
{code:java}
public void testSaveLargeFile() throws IOException
{
URL sourceUrl = new
URL("https://crossasia-books.ub.uni-heidelberg.de/xasia/reader/download/506/506-42-86246-2-10-20190822.pdf";);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PDDocument doc;
try
{
doc = PDDocument.load(sourceUrl.openStream());
doc.saveIncremental(baos);
}
catch (Exception e)
{
System.out.println(e);
}
}
{code}
using 2.0 and 3.0.0-alpha2 as well as trunk (adjusted to match the new API) and
report the time needed per version. Looks like we do have a huge performance
hit. thx
> OutOfMemory while signing large documents - continued
> -----------------------------------------------------
>
> Key: PDFBOX-5068
> URL: https://issues.apache.org/jira/browse/PDFBOX-5068
> Project: PDFBox
> Issue Type: Improvement
> Components: Signing
> Affects Versions: 2.0.23
> Reporter: Ralf Hauser
> Assignee: Andreas Lehmkühler
> Priority: Major
> Attachments: RandomAccessReadBufferDiag.java, issue5068.patch,
> minimum.pdf
>
>
> Continuation of PDFBOX-2512
>
> in COSWriter.prepareIncrement(), for the test case
> cosDoc.getXrefTable().keySet() has size 5925. For each of thes keys,
> cosDoc.getObjectFromPool() gets an object that is not just referencing some
> part of the input document, but duplicates it (which is unavoidable in the
> case where they are decompressed with FlateFilter - albeit this could
> possibly be done "lazy")
> -Xmx20m 746/5925
> -Xmx25m 1615/5925
> -Xmx30m 2800/5925
> -Xmx40m 3872/5925
> -Xmx55m 5773/5925
> With 60m, it gets them all, but dies later with less telling
> java.lang.OutOfMemoryError: GC overhead limit exceeded
>
> This assumes the patch of PDFBOX-5067 already in place - or using
> CreateVisibleSignature2.java as starting point
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