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https://issues.apache.org/jira/browse/PDFBOX-6120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18045117#comment-18045117
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Tilman Hausherr edited comment on PDFBOX-6120 at 12/15/25 10:23 AM:
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the jdk is pretty recent. My own test was on Windows. I just tested on a linux
system with Temurin-17.0.15+6 with -Xmx2g and it works fine. After a bit of
searching I also found an AdoptOpenJdk system 1.8.0_292 and the test was also
successful. I also added a trace to see whether the input file gets closed and
yes it does.
was (Author: tilman):
the jdk is pretty recent. My own test was on Windows. I just tested on a linux
system with Temurin-17.0.15+6 with -Xmx2g and it works fine. After a bit of
searching I also found an AdoptOpenJdk system 1.8.0_292 and the test XXXXXXX
(ongoing). I also added a trace to see whether the input file gets closed and
yes it does.
> PreflightParser .validate leads to "Too many open files"
> --------------------------------------------------------
>
> Key: PDFBOX-6120
> URL: https://issues.apache.org/jira/browse/PDFBOX-6120
> Project: PDFBox
> Issue Type: Bug
> Components: Preflight
> Affects Versions: 3.0.6 PDFBox
> Reporter: Théo Lenoble
> Priority: Major
>
> Hi from France,
> Hope my english will be clear enough to explain what we encounter :D
> We use org.apache.pdfbox:preflight:3.0.6, calling static method
> PreflightParser.validate we encounter "Too many open files" issues.
> We solved it locally by extending PreflightParser, implementing Closeable
> interface and overriding validate function.
> Exemple of our solution :
> {code:java}
> public class CustomPreflightParser extends PreflightParser implements
> Closeable {
> public static ValidationResult validate(File file) throws IOException {
> ValidationResult result;
> try(
> // we move PreflightParser initialisation here
> CustomPreflightParser parser = new CustomPreflightParser(file);
> PreflightDocument document = (PreflightDocument) parser.parse()
> ) {
> result = document.validate();
> }
> catch (SyntaxValidationException e)
> {
> result = e.getResult();
> }
> return result;
> }
> @Override
> public void close() {
> IOUtils.closeQuietly( this.source );
> IOUtils.closeQuietly( this.document );
> // May be missing close ressources, seems to be enought for us
> }
> }
> {code}
> We didn't spend more time on it so may be there is a better solution ?
> We wanted to share it with you in case you validate the issue and provide a
> proper fix.
> And may be it could help other to avoid having the same issue (or have a
> quick imperfect solution).
> Hope this could help :)
> Regards,
> Théo Lenoble
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