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From Chris Bamford <cbamf...@mimecast.com>
Subject Pushback buffer is full
Date Tue, 07 Feb 2012 17:46:44 GMT
Hi, I wonder if anyone can help ...

I use pdfbox 1.6.0 to process a lot of documents and most of the time it does a superb job.
 However, there are some documents it cannot seem to cope with and I was wondering if there's
anything I could do about it.  They always seem to have the following characteristics:

  -  auto-generated PDFs consisting mostly of images (little or no real text)
  -  not especially large (tens of megabytes, rather than hundreds)

I am guessing from the exception (java.io.IOException: Push back buffer is full) that it is
some kind of memory constraint, but as mentioned above, the data isn't that large.  For example
I get the exception on a 25Mb file when my JVM has 1Gb memory allocation!  Looking at the
file in a PDF viewer I see it has 3 pages, each one holding a single picture. Furthermore,
other, much larger PDFs (hundreds of Mb) containing lots of text and images work perfectly.

Unfortunately I cannot supply an example file at this time for customer confidentiality reasons,
but I was hoping someone might have overcome the same issue elsewhere?

Thanks for any tips ...

- Chris

Chris Bamford
Software Engineer

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