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https://issues.apache.org/jira/browse/PDFBOX-4288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16572342#comment-16572342
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Andreas Lehmkühler commented on PDFBOX-4288:
--------------------------------------------
I've looked that many time at those parts of the code and never saw that, spot
on
> needless adding while parsing dictionary objects
> ------------------------------------------------
>
> Key: PDFBOX-4288
> URL: https://issues.apache.org/jira/browse/PDFBOX-4288
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.11
> Reporter: Hee Jeong Kim
> Assignee: Tilman Hausherr
> Priority: Minor
> Labels: optimization
> Fix For: 2.0.12, 3.0.0 PDFBox
>
> Attachments: needless_adding_while_parsing_dictionary_objects.patch
>
>
> Hi, It seems like unnecessary objects(COSNull, COSFloat..) are also added to
> 'toBeParsedList' while parsing dictionary objects and this can impact on
> performance.
> You can download a file causing out of memory exception while parsing
> dictionary objects below,
> https://turnernbahangtime.files.wordpress.com/2017/10/2017-18-official-nba-guide_v2.pdf
> and please check the attached patch that avoids unnecessary adding operations.
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