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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2022/11/08 03:33:00 UTC
[jira] [Comment Edited] (PDFBOX-5542) 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
[ https://issues.apache.org/jira/browse/PDFBOX-5542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17630155#comment-17630155 ]
Tilman Hausherr edited comment on PDFBOX-5542 at 11/8/22 3:32 AM:
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These are sharing resources. You need to load() the PDF several times.
was (Author: tilman):
These are sharing resources. You need to open the file several times.
> 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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