[jira] [Created] (TIKA-1507) Under OSGi, ForkParser failes to send core parser classes like ExternalParser

["Nick Burch (JIRA)" <ji...@apache.org>]

Nick Burch created TIKA-1507:
--------------------------------

             Summary: Under OSGi, ForkParser failes to send core parser classes like ExternalParser
                 Key: TIKA-1507
                 URL: https://issues.apache.org/jira/browse/TIKA-1507
             Project: Tika
          Issue Type: Bug
          Components: packaging, parser
    Affects Versions: 1.6, 1.7
            Reporter: Nick Burch


Under OSGi, if you try to use ForkParser with the Tesseract OCR parser, it will fail with:

java.lang.NoClassDefFoundError: org/apache/tika/parser/external/ExternalParser
	at org.apache.tika.parser.ocr.TesseractOCRParser.hasTesseract(TesseractOCRParser.java:117)
	at org.apache.tika.parser.ocr.TesseractOCRParser.getSupportedTypes(TesseractOCRParser.java:91)
	at org.apache.tika.parser.CompositeParser.getParsers(CompositeParser.java:81)
	at org.apache.tika.parser.DefaultParser.getParsers(DefaultParser.java:95)
	at org.apache.tika.parser.CompositeParser.getParser(CompositeParser.java:209)
	at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:244)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at org.apache.tika.fork.ForkServer.call(ForkServer.java:144)
	at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:124)
	at org.apache.tika.fork.ForkServer.main(ForkServer.java:69)
Caused by: java.lang.ClassNotFoundException: Unable to find class org.apache.tika.parser.external.ExternalParser
	at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
	... 13 more

ExternalParser lives in the Tika Core jar, not the Tika Parsers one. This all works fine outside of OSGi, so it looks like something about the OSGi bundling is causing the fork parser to fail to send the parser-related classes from Tika Core over to the forked JVM



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