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https://issues.apache.org/jira/browse/PDFBOX-3795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16016348#comment-16016348
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Tilman Hausherr commented on PDFBOX-3795:
-----------------------------------------
The destination file has non compressed metadata content, but has Flate filter
assigned.
The source files have compressed metadata. This is unusual but not forbidden.
This line
{code}
newStream.getCOSObject().mergeInto(srcMetadata);
{code}
transfers all attributes, including the filter. That is bad.
> PDFMergeUtility error invalid stored block lengths
> --------------------------------------------------
>
> Key: PDFBOX-3795
> URL: https://issues.apache.org/jira/browse/PDFBOX-3795
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 2.0.6
> Reporter: Julian Cowan
> Labels: metadata, xmp
> Attachments: pdf-01.pdf, pdf-02.pdf, pdf-03.pdf
>
>
> PDFMergeUtility fails with a DataFormatException when trying to merge PDF
> documents.
> Caused by: java.util.zip.DataFormatException: invalid stored block lengths
> I have attached 3 PDF documents
> * pdf-01.pdf
> * pdf-02.pdf
> * pdf-03.pdf
> The first two PDF documents are good. They can be merged. In fact they were
> used to create the third document (pdf-03.pdf).
> When trying to merge another PDF with the third document, the PDF merge
> utility throws the error.
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