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https://issues.apache.org/jira/browse/PDFBOX-3555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler resolved PDFBOX-3555.
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Resolution: Fixed
I've added the missing call to all affected versions.
Thanks for the report!
> FlateFilter.decode cause native memory leaks
> --------------------------------------------
>
> Key: PDFBOX-3555
> URL: https://issues.apache.org/jira/browse/PDFBOX-3555
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 1.8.12, 2.0.3, 2.1.0
> Environment: Debian wheezy 7.11 / oracle JDK 8 - 64 bit / pdfbox 2.0.3
> Reporter: Yoan Alvarez
> Assignee: Andreas Lehmkühler
> Fix For: 1.8.13, 2.0.4, 2.1.0
>
>
> The
> [FlateFilter.decode|https://github.com/apache/pdfbox/blob/trunk/pdfbox/src/main/java/org/apache/pdfbox/filter/FlateFilter.java#L45]
> method calls the private method
> [FlateFilter.decompress|https://github.com/apache/pdfbox/blob/trunk/pdfbox/src/main/java/org/apache/pdfbox/filter/FlateFilter.java#L89]
> which instanciates a
> [java.util.zip.Inflater|https://docs.oracle.com/javase/8/docs/api/java/util/zip/Inflater.html].
> But this method never calls the
> [Inflater.end|https://docs.oracle.com/javase/8/docs/api/java/util/zip/Inflater.html#end--]
> method so I think the native memory allocated by the Inflater is never
> released.
> By consequence, the java process memory size keeps growing over time.
> The simplest way we found to fix this is to call the
> [Inflater.end|https://docs.oracle.com/javase/8/docs/api/java/util/zip/Inflater.html#end--]
> when the inflater has done its job and is not used anymore at the end of
> [FlateFilter.decompress|https://github.com/apache/pdfbox/blob/trunk/pdfbox/src/main/java/org/apache/pdfbox/filter/FlateFilter.java#L136].
> With this fix, the java process memory size remains stable over time.
> Just ask me if more details are needed.
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