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https://issues.apache.org/jira/browse/PDFBOX-5542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Tilman Hausherr closed PDFBOX-5542.
-----------------------------------
    Resolution: Won't Fix

> I want to use multiple threads to convert different pages of the same 
> document at the same time, what should I do to avoid repeated load and memory 
> or disk space usage. Do you have any good suggestions, thank you
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-5542
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-5542
>             Project: PDFBox
>          Issue Type: Bug
>            Reporter: liu
>            Priority: Blocker
>         Attachments: image-2022-11-08-10-03-34-972.png
>
>
>  !image-2022-11-08-10-03-34-972.png! 
> FlateFilter: stop reading corrupt stream due to a DataFormatException
> java.util.zip.DataFormatException: invalid code lengths set
>       at java.util.zip.Inflater.inflateBytes(Native Method)
>       at java.util.zip.Inflater.inflate(Inflater.java:259)
>       at java.util.zip.Inflater.inflate(Inflater.java:280)
>       at org.apache.pdfbox.filter.FlateFilter.decompress(FlateFilter.java:86)
>       at org.apache.pdfbox.filter.FlateFilter.decode(FlateFilter.java:50)
>       at org.apache.pdfbox.filter.Filter.decode(Filter.java:87)
>       at org.apache.pdfbox.cos.COSInputStream.create(COSInputStream.java:87)
>       at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:175)
>       at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:163)
>       at 
> org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:238)
>       at 
> org.apache.pdfbox.pdmodel.font.PDCIDFontType2.<init>(PDCIDFontType2.java:112)
>       at 
> org.apache.pdfbox.pdmodel.font.PDCIDFontType2.<init>(PDCIDFontType2.java:65)
>       at 
> org.apache.pdfbox.pdmodel.font.PDFontFactory.createDescendantFont(PDFontFactory.java:139)
>       at 
> org.apache.pdfbox.pdmodel.font.PDType0Font.<init>(PDType0Font.java:203)
>       at 
> org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:97)
>       at org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:146)
>       at 
> org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:66)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:966)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:541)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:516)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:155)
>       at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:284)
>       at 
> org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:355)
>       at 
> org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:272)
>       at org.apache.pdfbox.Test$2.run(Test.java:193)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> Could not read embedded OTF for font QCXXKD+SimSun
> java.io.IOException: java.util.zip.DataFormatException: invalid code lengths 
> set
>       at org.apache.pdfbox.filter.FlateFilter.decode(FlateFilter.java:58)
>       at org.apache.pdfbox.filter.Filter.decode(Filter.java:87)
>       at org.apache.pdfbox.cos.COSInputStream.create(COSInputStream.java:87)
>       at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:175)
>       at org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:163)
>       at 
> org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:238)
>       at 
> org.apache.pdfbox.pdmodel.font.PDCIDFontType2.<init>(PDCIDFontType2.java:112)
>       at 
> org.apache.pdfbox.pdmodel.font.PDCIDFontType2.<init>(PDCIDFontType2.java:65)
>       at 
> org.apache.pdfbox.pdmodel.font.PDFontFactory.createDescendantFont(PDFontFactory.java:139)
>       at 
> org.apache.pdfbox.pdmodel.font.PDType0Font.<init>(PDType0Font.java:203)
>       at 
> org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:97)
>       at org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:146)
>       at 
> org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:66)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:966)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:541)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:516)
>       at 
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:155)
>       at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:284)
>       at 
> org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:355)
>       at 
> org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:272)
>       at org.apache.pdfbox.Test$2.run(Test.java:193)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
> Caused by: java.util.zip.DataFormatException: invalid code lengths set
>       at java.util.zip.Inflater.inflateBytes(Native Method)
>       at java.util.zip.Inflater.inflate(Inflater.java:259)
>       at java.util.zip.Inflater.inflate(Inflater.java:280)
>       at org.apache.pdfbox.filter.FlateFilter.decompress(FlateFilter.java:86)
>       at org.apache.pdfbox.filter.FlateFilter.decode(FlateFilter.java:50)
>       ... 23 more



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