[TIKA-1555] posix_spawn is not a supported process launch mechanism on this platform

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.7
• Component/s: parser
• Labels: ocr parser

Environment

MacOS X 10.10.2

• Assignee: Tyler Bui-Palsulich
• Reporter: David Pilato
• Created: 20/Feb/15 17:15
• Updated: 20/Feb/15 20:17
• Resolved: 20/Feb/15 18:17

Description

It could happen on some systems that posix_spawn is not a supported process launch mechanism.

We are doing random testing which simulates different kind of Locale so I could sometime hit that issue:

java.lang.Error: posix_spawn is not a supported process launch mechanism on this platform.
	at java.lang.UNIXProcess$1.run(UNIXProcess.java:104)
	at java.lang.UNIXProcess$1.run(UNIXProcess.java:93)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.lang.UNIXProcess.<clinit>(UNIXProcess.java:91)
	at java.lang.ProcessImpl.start(ProcessImpl.java:130)
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1022)
	at java.lang.Runtime.exec(Runtime.java:617)
	at java.lang.Runtime.exec(Runtime.java:485)
	at org.apache.tika.parser.external.ExternalParser.check(ExternalParser.java:344)
	at org.apache.tika.parser.ocr.TesseractOCRParser.hasTesseract(TesseractOCRParser.java:117)
	at org.apache.tika.parser.ocr.TesseractOCRParser.getSupportedTypes(TesseractOCRParser.java:90)
	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.getSupportedTypes(CompositeParser.java:229)
	at org.apache.tika.parser.CompositeParser.getParsers(CompositeParser.java:81)
	at org.apache.tika.parser.CompositeParser.getParser(CompositeParser.java:209)
	at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:244)
	at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:120)
	at org.apache.tika.Tika.parseToString(Tika.java:506)

It sounds like it's related to this: http://java.thedizzyheights.com/2014/07/java-error-posix_spawn-is-not-a-supported-process-launch-mechanism-on-this-platform-when-trying-to-spawn-a-process/

Though I have hard time to reproduce it!

BTW I wonder if we could add a setting which can return false for TesseractOCRParser#hasTesseract even if we have tesseract available.

For example, let say that my machine shares multiple application and for one of them I don't want any OCR on my documents.

Hope this helps.
Let me know if you need more details.