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From Roger Håkansson (JIRA) <j...@apache.org>
Subject [jira] [Created] (PDFBOX-1305) Text extraction takes huge amount of time on some files
Date Wed, 09 May 2012 14:59:50 GMT
Roger Håkansson created PDFBOX-1305:
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             Summary: Text extraction takes huge amount of time on some files
                 Key: PDFBOX-1305
                 URL: https://issues.apache.org/jira/browse/PDFBOX-1305
             Project: PDFBox
          Issue Type: Bug
          Components: Text extraction
    Affects Versions: 1.6.0
         Environment: Same phenomena on Windows 7, Solaris 10 and CentOS 5.7. Same result
with JDK 7u4 and JDK 6u32
            Reporter: Roger Håkansson


I've got 1.2M single-page PDF files which I'm indexing using Solr (which is using Tika, which
is using PDFBox) and some of them takes between 20min up to an hour to index.
This is a huge problem for me, in 48hours I've indexed about 45k files and 19 hours of that
time was spent on just 279 files.

I've traced it to PDFBox taking a lot of time extracting the text from the documents.

I've tested extracting the text using pdfbox-app's ExtractText with the same result, the text
is extracted but it takes forever...

The attached file took about 23min (using ExtractText) and from the result I can see a lot
of "rubbish text" which I don't see in the text extracted from files that takes a normal amount
of time (up to a few seconds per file) to parse.

When running truss (on Solaris, strace on Linux) on the java-process, I can see a lot of SEGV
due to FLTBOUNDS, which I don't know if its related to this problem but I just want to mention
it.

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