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https://issues.apache.org/jira/browse/PDFBOX-4559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16857856#comment-16857856
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Tilman Hausherr commented on PDFBOX-4559:
-----------------------------------------
I don't know, I think this was related to the rewriting of the memory
management code. We haven't had any such troubles until this issue.
I'll improve the javadoc to mention that result files should not be used
concurrently.
> Parse error reading embedded Type1 font
> ---------------------------------------
>
> Key: PDFBOX-4559
> URL: https://issues.apache.org/jira/browse/PDFBOX-4559
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.15
> Environment: Oracle Java 8 update125 on both Mac OS X and centos
> Reporter: Jack
> Priority: Major
> Labels: type1, type1font
> Attachments: test.pdf
>
>
> I got following error while running a simple parallel rendering code.
> However, the error doesn't happen when I change parallelStream to sequential
> (stream()). Interestingly, both methods will render exact same images. I saw
> a possible related ticket PDFBOX-3654. But seems that issue was fixed. I'd
> like to learn if we have some more bugs related?
> *Sample code*:
> {code:java}
> PDDocument document = PDDocument.load(new File(pdfFilename));
> List<PDDocument> pdfPages = new Splitter().split(document);
> pdfPages.parallelStream().forEach(page -> {
> try {
> PDFRenderer renderer = new PDFRenderer(page);
> renderer.renderImageWithDPI(0, 180, ImageType.RGB); // change dpi to your
> number
> } catch (IOException e) {
> System.out.println(e);
> }
> try {
> pdfPage.close();
> } catch (IOException ignored) {
> }
> });
> try {
> document.close();
> } catch (IOException ignored) {
> }
> {code}
>
> *Error log*:
> {noformat}
> ERROR [PDType1Font] Can't read the embedded Type1 font POAEND+Gotham-Book
> java.io.IOException: unexpected closing parenthesis
> at org.apache.fontbox.type1.Type1Lexer.readToken(Type1Lexer.java:123)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.fontbox.type1.Type1Lexer.nextToken(Type1Lexer.java:75)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.fontbox.type1.Type1Parser.readValue(Type1Parser.java:398)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.fontbox.type1.Type1Parser.readOtherSubrs(Type1Parser.java:707)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.fontbox.type1.Type1Parser.parseBinary(Type1Parser.java:550)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.fontbox.type1.Type1Parser.parse(Type1Parser.java:64)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.fontbox.type1.Type1Font.createWithSegments(Type1Font.java:85)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.pdfbox.pdmodel.font.PDType1Font.<init>(PDType1Font.java:262)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:62)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:146)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:60)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:869)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:505)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:479)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:152)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:265)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:314)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:243)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> at
> org.apache.pdfbox.rendering.PDFRenderer.renderImageWithDPI(PDFRenderer.java:229)
> ~[pdfbox-2.0.15-snapshot108.jar:2.0.15-SNAPSHOT]
> WARN [PDType1Font] Using fallback font Helvetica for POAEND+Gotham-Book
> {noformat}
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