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Apache Tika compilation error

问答 作者：

I'm getting this error when compiling Apache Tika the latest version on debian. Any help will be appreciated.

I've downloaded the latest version from tika.apache.org/download.html. Installed maven with aptitude. I use debian. And also have installed sun-java6-jdk. Set JAVA_HOME variable. Then I just go to base tika folder and run "mvn clean install". More interesting is that I could install a few days ago it on another debian server without any problems.

Running org.apache.tika.fork.ForkParserTest
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.开发者_StackOverflowlang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
java.lang.ClassNotFoundException: Unable to find class org.apache.tika.metadata.Metadata
   at org.apache.tika.fork.ClassLoaderProxy.findClass(ClassLoaderProxy.java:117)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.ClassLoader.loadClass(libgcj.so.90)
   at java.lang.reflect.Method.getType(libgcj.so.90)
   at java.lang.reflect.Method.getParameterTypes(libgcj.so.90)
   at org.apache.tika.fork.ForkServer.call(ForkServer.java:130)
   at org.apache.tika.fork.ForkServer.processRequests(ForkServer.java:116)
   at org.apache.tika.fork.ForkServer.main(ForkServer.java:64)
org.apache.tika.exception.TikaException: Failed to communicate with a forked parser process. The process has most likely crashed due to some error like running out of memory. A new process will be started for the next parsing request.
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:120)
    at org.apache.tika.fork.ForkParserTest$1.run(ForkParserTest.java:80)
Caused by: java.io.IOException: Lost connection to a forked server process
    at org.apache.tika.fork.ForkClient.waitForResponse(ForkClient.java:169)
    at org.apache.tika.fork.ForkClient.sendObject(ForkClient.java:137)
    at org.apache.tika.fork.ForkClient.call(ForkClient.java:108)
    at org.apache.tika.fork.ForkParser.parse(ForkParser.java:117)
    ... 1 more
Tests run: 3, Failures: 1, Errors: 2, Skipped: 0, Time elapsed: 1.621 sec <<< FAILURE!
Running org.apache.tika.metadata.TestMetadata
Tests run: 11, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.016 sec
Running org.apache.tika.mime.MediaTypeTest
Tests run: 7, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.012 sec
Running org.apache.tika.detect.TextDetectorTest
Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.006 sec
Running org.apache.tika.TikaTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.157 sec
Running org.apache.tika.detect.TypeDetectorTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.006 sec
Running org.apache.tika.sax.SafeContentHandlerTest
Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.004 sec
Running org.apache.tika.sax.BodyContentHandlerTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.003 sec
Running org.apache.tika.mime.MimeDetectionTest
Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.631 sec
Running org.apache.tika.language.LanguageProfileTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.005 sec
Running org.apache.tika.language.LanguageIdentifierTest
Tests run: 4, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.949 sec
Running org.apache.tika.TestRereadableInputStream
Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.007 sec
Running org.apache.tika.language.ProfilingWriterTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.002 sec

Results :

Failed tests: 
  testParallelParsing(org.apache.tika.fork.ForkParserTest)

Tests in error: 
  testHelloWorld(org.apache.tika.fork.ForkParserTest)
  testSerialParsing(org.apache.tika.fork.ForkParserTest)

Tests run: 83, Failures: 1, Errors: 2, Skipped: 0

[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

Based on your stack trace, I don't think you're using the Sun JDK. Instead, I think you're using GCJ (the GNU Java stuff) - if you look in the stacktrace you'll see references to libgcj.so which is the giveaway.

I think therefore that what you need to do is use update-alternatives to pick the Sunk JDK / JRE instead of the GNU GCJ one. After that, Tika ought to compile fine.

Try:

update-alternatives --list java
update-alternatives --list javac
update-alternatives --display java
update-alternatives --display javac

The to pick you can use

update-alternatives --config java
update-alternatives --config javac

(You might also want to update jar, jarsigner and a few others too)

继续阅读：apache-tikacompilationdebian

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