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https://issues.apache.org/jira/browse/PDFBOX-5770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17818288#comment-17818288
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Michael Klink commented on PDFBOX-5770:
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Where is the code?
> When adding watermark to PDF, there may be a native memory leak
> ---------------------------------------------------------------
>
> Key: PDFBOX-5770
> URL: https://issues.apache.org/jira/browse/PDFBOX-5770
> Project: PDFBox
> Issue Type: Bug
> Reporter: weiteFeng
> Priority: Major
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> When using the following code to add a watermark to a PDF file, the memory
> usage of the Java process will gradually increase, even exceeding the limit
> of the maximum heap memory usage. When the process uses memory exceeding the
> maximum memory of the machine, the Java process will be killed by the
> operating system.
> When analyzing the dumped memory, I found that when the Java process occupies
> a large amount of memory (viewed through the top command), the heap memory of
> the process actually does not occupy too much space, so I inferred that there
> may be a native memory leak in this code, due to I don't have a deep
> understanding of Linux memory analysis, so I can't find the problem in this
> code.
> I wonder if you have any suggestion.
> The following is the code I use to add watermarks to PDF:
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