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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2015/07/09 10:23:06 UTC

[jira] [Comment Edited] (PDFBOX-2862) GlyphList doesn't appear to be thread safe in trunk...or user error?

    [ https://issues.apache.org/jira/browse/PDFBOX-2862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14619907#comment-14619907 ] 

Tilman Hausherr edited comment on PDFBOX-2862 at 7/9/15 8:22 AM:
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>From the trace, it looks like there are several users who access GlyphList.DEFAULT, and thus, the two private HashMap in GlyphList, at the same time. Please try replacing {{new HashMap}} with {{new HashTable}} or {{new ConcurrentHashMap}} everywhere in GlyphList.java.


was (Author: tilman):
>From the trace, it looks like there are several users who access GlyphList.DEFAULT, and thus, the two private HashMap in GlyphList, at the same time. Please try replacing {{new HashMap}} with {{new HashTable}} everywhere in GlyphList.java.

> GlyphList doesn't appear to be thread safe in trunk...or user error?
> --------------------------------------------------------------------
>
>                 Key: PDFBOX-2862
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2862
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Tim Allison
>
> This could be user error, but I'm getting the following when running trunk in a multithreaded environment.
> {noformat}
> Caused by: java.util.ConcurrentModificationException
>         at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
>         at java.util.HashMap$EntryIterator.next(HashMap.java:962)
>         at java.util.HashMap$EntryIterator.next(HashMap.java:960)
>         at java.util.HashMap.putAllForCreate(HashMap.java:554)
>         at java.util.HashMap.&lt;init&gt;(HashMap.java:298)
>         at org.apache.pdfbox.pdmodel.font.encoding.GlyphList.&lt;init&gt;(GlyphList.java:114)
>         at org.apache.pdfbox.text.PDFTextStreamEngine.&lt;init&gt;(PDFTextStreamEngine.java:103)
>         at org.apache.pdfbox.text.PDFTextStripper.&lt;init&gt;(PDFTextStripper.java:196)
>         at org.apache.tika.parser.pdf.PDF2XHTML.&lt;init&gt;(PDF2XHTML.java:106)
>         at org.apache.tika.parser.pdf.PDF2XHTML.process(PDF2XHTML.java:133)
>         at org.apache.tika.parser.pdf.PDFParser.parse(PDFParser.java:132)
>         at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:281)
>         ... 16 more
> {noformat}



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