Joey Ezekiel updated FOP-2189:

    Attachment: Analyzer.log

tusc.log contains the open/close commands monitored on the unix bos. 
Analyzer.log gives which files are being left open. The jar files/system 
commands can be ignored - the calls to the image files are the concern.
> Apache FOP 1.0 Multithreading Problems - Too many open files err24
> ------------------------------------------------------------------
>                 Key: FOP-2189
>                 URL: https://issues.apache.org/jira/browse/FOP-2189
>             Project: Fop
>          Issue Type: Bug
>          Components: pdf
>    Affects Versions: 1.0
>         Environment: HP Unix 
>            Reporter: Joey Ezekiel
>              Labels: Exception, Font", IOException, PDF, error
>             Fix For: trunk
>         Attachments: Analyzer.log, tusc.log
> We use Apache FOP to convert a whole lot of XML's to AFP's and PDF's. Our 
> current load would be around 25k files per run on a HP-UX system. We have 12 
> threads in total that are used to initialize and trigger the FOP conversion 
> in a producer-consumer fashion. Recently there have been multiple failures 
> during conversion and when looked up, we've received generic FOP errors like:
> **ERROR,2460364,FOToPDF_Thread_11,FOP Exception, something.pdf,Failed to 
> resolve font with embed-url './Fonts/arial.ttf'**
> or its an error failing to load the font metrics file although the files are 
> intact with the right permissions. Many other PDF's are generated so this 
> can't be the problem.
> We also wind up with:
> **java.io.FileNotFoundException: /PDF/20130111130002/something.pdf (Too many 
> open files (errno:24))**
> judging by the logs and volume being processed, this looks like an FOP 
> problem. I've read that FOP has had this issue in the past with the font 
> files. There have been instances where Apache has opened each font file 
> multiple times and not closed the handles resulting in a large number of open 
> files. This was supposed to be fixed, but if it still persists, what would be 
> a good and quick solution to this?

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