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dbpedia / lookup

Outputs a list of ranked DBpedia resources for a search string.
Apache License 2.0
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Unable to execute "./run Server dbpedia-lookup-index-3.8" #27

Closed cosmo-kramer closed 8 years ago

cosmo-kramer commented 8 years ago

After downloading dbpedia-lookup-index and mvn install "./run Server dbpedia-lookup-index-3.8" doesn't works.It gives following error:

[INFO] --- scala-maven-plugin:3.2.2:testCompile (test-compile) @ dbpedia-lookup --- [WARNING] Expected all dependencies to require Scala version: 2.11.7 [WARNING] org.dbpedia.lookup:dbpedia-lookup:3.1 requires scala version: 2.11.7 [WARNING] org.scala-lang:scala-compiler:2.11.7 requires scala version: 2.11.7 [WARNING] org.scala-lang:scala-reflect:2.11.7 requires scala version: 2.11.7 [WARNING] org.scala-lang.modules:scala-xml_2.11:1.0.4 requires scala version: 2.11.4 [WARNING] Multiple versions of scala libraries detected! [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] <<< scala-maven-plugin:3.2.2:run (default-cli) < test-compile @ dbpedia-lookup <<< [INFO] [INFO] --- scala-maven-plugin:3.2.2:run (default-cli) @ dbpedia-lookup --- [WARNING] Expected all dependencies to require Scala version: 2.11.7 [WARNING] org.dbpedia.lookup:dbpedia-lookup:3.1 requires scala version: 2.11.7 [WARNING] org.scala-lang:scala-compiler:2.11.7 requires scala version: 2.11.7 [WARNING] org.scala-lang:scala-reflect:2.11.7 requires scala version: 2.11.7 [WARNING] org.scala-lang.modules:scala-xml_2.11:1.0.4 requires scala version: 2.11.4 [WARNING] Multiple versions of scala libraries detected! [INFO] launcher 'Server' selected => org.dbpedia.lookup.server.Server java.lang.reflect.InvocationTargetException 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:606) at scala_maven_executions.MainHelper.runMain(MainHelper.java:164) at scala_maven_executions.MainWithArgsInFile.main(MainWithArgsInFile.java:26) Caused by: org.apache.lucene.index.IndexNotFoundException: no segments* file found in org.apache.lucene.store.MMapDirectory@/home/abhishek/lookup/dbpedia-lookup-index-3.8 lockFactory=org.apache.lucene.store.NativeFSLockFactory@7a003aca: files: [dbpedia-lookup-index-3.8] at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:667) at org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:72) at org.apache.lucene.index.IndexReader.open(IndexReader.java:256) at org.dbpedia.lookup.lucene.Searcher.(Searcher.scala:21) at org.dbpedia.lookup.server.Server$.main(Server.scala:51) at org.dbpedia.lookup.server.Server.main(Server.scala) ... 6 more [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 5.877 s [INFO] Finished at: 2016-02-28T17:10:35+05:30 [INFO] Final Memory: 17M/248M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal net.alchim31.maven:scala-maven-plugin:3.2.2:run (default-cli) on project dbpedia-lookup: wrap: org.apache.commons.exec.ExecuteException: Process exited with an error: 240 (Exit value: 240) -> [Help 1]

sandroacoelho commented 8 years ago

Hi @coderabhishek, sorry for the delay.

It seems that your index folder doesn't have a segments* file. I've created new indexes for English and are available here.

Could you , please, download the en_current.tar.gz, unpack it and run ./run Server dbpedia-lookup-index/en/current/core-i18n ?

sandroacoelho commented 8 years ago

Also... Thanks for test the README procedures. I've just upgraded it.

cosmo-kramer commented 8 years ago

Thanks @sandroacoelho ,I'm able to run local mirror and make some test API calls.Is there something else I can do to get a good understanding of code base?

sandroacoelho commented 8 years ago

Hi @coderabhishek :

You can start basically doing three things:

*Look inside the Lookup index (It is a Lucene index). You can use Luke for it . - It's really important to know how the information is organized;

And finally

Best,