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https://issues.apache.org/jira/browse/TIKA-1526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14287824#comment-14287824
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Uwe Schindler commented on TIKA-1526:
-------------------------------------
Tim: Linux does not use posis spawn. You ned MacOSX or Solaris. Oracle has a
completely different implementation for spawning processes in Linux.
> ExternalParser should trap/ignore/workarround JDK-8047340 & JDK-8055301 so
> Turkish Tika users can still use non-external parsers
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: TIKA-1526
> URL: https://issues.apache.org/jira/browse/TIKA-1526
> Project: Tika
> Issue Type: Wish
> Reporter: Hoss Man
>
> the JDK has numerous pain points regarding the Turkish locale, "posix_spawn"
> lowercasing being one of them...
> https://bugs.openjdk.java.net/browse/JDK-8047340
> https://bugs.openjdk.java.net/browse/JDK-8055301
> As of Tika 1.7, the TesseractOCRParser (which is an ExternalParser) is
> enabled & configured by default in Tika, and uses ExternalParser.check to see
> if tesseract is available -- but because of the JDK bug, this means that Tika
> fails fast for Turkish users on BSD/UNIX variants (including MacOSX) like
> so...
> {noformat}
> [junit4] > Throwable #1: java.lang.Error: posix_spawn is not a supported
> process launch mechanism on this platform.
> [junit4] > at java.lang.UNIXProcess$1.run(UNIXProcess.java:105)
> [junit4] > at java.lang.UNIXProcess$1.run(UNIXProcess.java:94)
> [junit4] > at java.security.AccessController.doPrivileged(Native
> Method)
> [junit4] > at java.lang.UNIXProcess.<clinit>(UNIXProcess.java:92)
> [junit4] > at java.lang.ProcessImpl.start(ProcessImpl.java:130)
> [junit4] > at
> java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
> [junit4] > at java.lang.Runtime.exec(Runtime.java:620)
> [junit4] > at java.lang.Runtime.exec(Runtime.java:485)
> [junit4] > at
> org.apache.tika.parser.external.ExternalParser.check(ExternalParser.java:344)
> [junit4] > at
> org.apache.tika.parser.ocr.TesseractOCRParser.hasTesseract(TesseractOCRParser.java:117)
> [junit4] > at
> org.apache.tika.parser.ocr.TesseractOCRParser.getSupportedTypes(TesseractOCRParser.java:90)
> [junit4] > at
> org.apache.tika.parser.CompositeParser.getParsers(CompositeParser.java:81)
> [junit4] > at
> org.apache.tika.parser.DefaultParser.getParsers(DefaultParser.java:95)
> [junit4] > at
> org.apache.tika.parser.CompositeParser.getSupportedTypes(CompositeParser.java:229)
> [junit4] > at
> org.apache.tika.parser.CompositeParser.getParsers(CompositeParser.java:81)
> [junit4] > at
> org.apache.tika.parser.CompositeParser.getParser(CompositeParser.java:209)
> [junit4] > at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:244)
> [junit4] > at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:120)
> {noformat}
> ...unless they go out of their way to white list only the parsers they
> need/want so TesseractOCRParser (and any other ExternalParsers) will never
> even be check()ed.
> It would be nice if Tika's ExternalParser class added a similar
> hack/workarround to what was done in SOLR-6387 to trap these types of errors.
> In Solr we just propogate a better error explaining why Java hates the
> turkish langauge...
> {code}
> } catch (Error err) {
> if (err.getMessage() != null && (err.getMessage().contains("posix_spawn")
> || err.getMessage().contains("UNIXProcess"))) {
> log.warn("Error forking command due to JVM locale bug (see
> https://issues.apache.org/jira/browse/SOLR-6387): " + err.getMessage());
> return "(error executing: " + cmd + ")";
> }
> }
> {code}
> ...but with Tika, it might be better for all ExternalParsers to just "opt
> out" as if they don't recognize the filetype when they detect this type of
> error fro m the check method (or perhaps it would be better if
> AutoDetectParser handled this? ... i'm not really sure how it would best fit
> into Tika's architecture)
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