Re: Fwd: Very slow PDF parsing.

[Tilman Hausherr]

Hi,

As usual, it would be nice to have the PDF, so that we could run the 
profiler.

The HashSet is used to avoid decrypting objects twice.

The "not encrypted" file is likely encrypted with an empty user password.

It would also be interesting to hear what parameter is passed to 
MemoryUsageSetting when load() is called.

Tilman



Am 26.02.2019 um 18:14 schrieb Tim Allison:
PDFBox Colleagues,
   Any ideas?

---------- Forwarded message ---------
From: Tim Allison <talli...@apache.org>
Date: Tue, Feb 26, 2019 at 12:13 PM
Subject: Re: Very slow PDF parsing.
To: <u...@tika.apache.org>


Sorry...that's an OCR tool.  One thing that can slow down processing
dramatically is if you have tesseract installed (try typing 'tesseract' on
your commandline) and if you've turned it on for PDFs.  I suspect this
isn't your problem, though.



On Tue, Feb 26, 2019 at 12:08 PM Slava G <slav...@gmail.com> wrote:

Thanks Tim,
But frankly speaking, it's a shame, but don't know what is tessercat is in
this context 🙂

Thanks

On Tue, Feb 26, 2019, 19:04 Tim Allison <talli...@apache.org> wrote:

Thank you, Slava!

Do you have tesseract installed?

Colleagues on PDFBox, any recommendations?

On Tue, Feb 26, 2019 at 11:56 AM Slava G <slav...@gmail.com> wrote:
Hi,

I have large PDF (about 65mb) that contains mainly text and some images.

Parsing of such PDF can take about 2 days or even more (TIKA 1.19.1
running on XEON server with 4 cores CPU and 30GB RAM with SSD disk, running
CentOS Linux).
Please advise if there anything I can do to speedup.Or maybe it's a bug
in PDFBox ?
When I'm printing java stack , I see all the time in this stack :

at org.apache.pdfbox.cos.COSString.equals(COSString.java:259)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.find(Unknown Source)

at java.util.HashMap$TreeNode.getTreeNode(Unknown Source)

at java.util.HashMap.getNode(Unknown Source)

at java.util.HashMap.containsKey(Unknown Source)

at java.util.HashSet.contains(Unknown Source)

at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:390)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptDictionary(SecurityHandler.java:517)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:404)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptArray(SecurityHandler.java:577)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:408)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptDictionary(SecurityHandler.java:517)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:404)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptDictionary(SecurityHandler.java:517)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:404)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptArray(SecurityHandler.java:577)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:408)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decryptDictionary(SecurityHandler.java:517)
at
org.apache.pdfbox.pdmodel.encryption.SecurityHandler.decrypt(SecurityHandler.java:404)
at
org.apache.pdfbox.pdfparser.COSParser.parseFileObject(COSParser.java:946)
at
org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:874)
at
org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:794)
at
org.apache.pdfbox.pdfparser.COSParser.parseDictObjects(COSParser.java:754)
at
org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:185)
at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:220)

at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1028)

at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:984)

at org.apache.tika.parser.pdf.PDFParser.parse(PDFParser.java:152)


P.S. Btw, the PDF is not encrypted at all.

Thanks



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