[PDFBOX-3955] new -- very slow processing on truncated PDF

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.8, 3.0.0 PDFBox
• Component/s: Parsing
• Assignee: Andreas Lehmkühler
• Reporter: Tim Allison
• Created: 09/Oct/17 17:42
• Updated: 02/Nov/17 21:01
• Resolved: 09/Oct/17 18:18

Description

In the latest regression run with PDFBox's 2.x branch, we're now getting very slow processing on a truncated PDF with PDFBox app's ExtractText:

http://162.242.228.174/docs/truncated_pdfs/commoncrawl2_likely_broken/7K/7KK53NK5PVKOUGDSQ4FK6542BNPC4SWB

Turns out this is not an infinite loop. After 4.5 minutes, ExtractText eventually ended with:

Exception in thread "main" java.io.IOException: Missing root object specification in trailer.
        at org.apache.pdfbox.pdfparser.COSParser.parseTrailerValuesDynamically(COSParser.java:2508)
        at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:193)
        at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:240)
        at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1012)
        at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:950)
        at org.apache.pdfbox.tools.ExtractText.startExtraction(ExtractText.java:192)
        at org.apache.pdfbox.tools.ExtractText.main(ExtractText.java:82)
        at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:60)

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