liu created PDFBOX-5542:
---------------------------

             Summary: 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
         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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