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https://issues.apache.org/jira/browse/PDFBOX-4080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354980#comment-16354980
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Tilman Hausherr commented on PDFBOX-4080:
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{{new COSStream()}} calls {{ScratchFile.getMainMemoryOnlyInstance()}}. That one
calls {{new {{ScratchFile(MemoryUsageSetting.setupMainMemoryOnly())}}. And
{{new ScratchFile()}} allocates a byte array with size 100000.
Yes that's why calling {{createCOSStream()}} is the better thing to do.
I agree that it is not a high priority but it should be kept in mind and fixed
before release.
> Improve memory consumption of PDAbstractAppearanceHandler
> ---------------------------------------------------------
>
> Key: PDFBOX-4080
> URL: https://issues.apache.org/jira/browse/PDFBOX-4080
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Affects Versions: 3.0.0 PDFBox
> Reporter: Maruan Sahyoun
> Assignee: Maruan Sahyoun
> Priority: Major
> Labels: Annotations
> Fix For: 3.0.0 PDFBox
>
>
> PDAbstractAppearanceHandler calls new COSStream(), this has a huge memory
> footprint (PDFBOX-3868 and PDFBOX-3852). We'd need to find a way to pass the
> document, or the document scratch file, or there will be trouble for files
> with many annotations, e.g. a long scientific document with many footnotes.
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