[jira] [Updated] (PDFBOX-4726) PDFRenderer uses excessive memory

["Ben Manes (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-4726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben Manes updated PDFBOX-4726:
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    Attachment: reachability 1-26-20.png
                heap 1-26-20.png

> PDFRenderer uses excessive memory
> ---------------------------------
>
>                 Key: PDFBOX-4726
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4726
>             Project: PDFBox
>          Issue Type: Improvement
>            Reporter: Ben Manes
>            Priority: Major
>         Attachments: heap 1-26-20.png, heap.png, instance.png, reachability 1-26-20.png, stacktrace.png
>
>
> {{PDFRenderer.renderImage}} uses BufferedImage with only in-memory data. This is uncompressed and can use excessive memory. This occurs despite setting \{{MemoryUsageSetting}} being configured on the document for disk space, which should be honored.
> This [stackoverflow answer|https://stackoverflow.com/a/53205617/19450] suggests using a {{WritableRaster}} backed by a temporary file. This change cannot be done in user code and requires updating the {{PDFRenderer}}.
> I am currently trying to track down a PDF that caused out-of-memory issues. From the heap dump only a few {{BufferedImages}} where in memory, but they took 6gb in their uncompressed data.



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