[PDFBOX-4559] Parse error reading document from several threads

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.15
• Component/s: Rendering
• Labels: concurrency multithreading type1 type1font
• Environment: Oracle Java 8 update125 on both Mac OS X and centos
• Assignee: Unassigned
• Reporter: Jack
• Created: 05/Jun/19 05:03
• Updated: 22/Mar/22 17:17

Description

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:

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) {
}

 

Error log:

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