How to open a Lucene 4.3 index?

Question

I am a Lucene newbie and I am trying to open a Lucene 4.3 index (which I am creating with my simple Lucene 4.3.1 app) using Luke, but it keeps giving me:

Invalid directory at the location, check console for more information. Last exception: java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene42' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: [Lucene40, Lucene3x, SimpleText, Appending]

Fine. So I set the Lucene version used in the code to Version.LUCENE_43. I tried earlier 3.x versions as well. What am I doing wrong here? Is there another Lucene index browser one can use?

I am running Luke using java -jar lukeall-4.0.0-ALPHA.jar and I am telling it to open the index which my app is producing.

UPDATE:

• I have tried setting my CLASSPATH to include lucene-core:4.3.1:jar. That didn't help.

• Luke throws this error:

  java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene42' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: [Lucene40, Lucene3x, SimpleText, Appending] java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene42' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: [Lucene40, Lucene3x, SimpleText, Appending]

Many thanks!

Answer 1

After long time searching, I was instructed to look for latest Luke releases here: Opengrok, where you can find versions of Luke past the 4.0.0-alpha available at the site. Luke 4.4 should be able to read the current index format with some caveats.

Answer 2

There is person who took his time to fix luke for lucene-4.3.1.

https://github.com/tarzanek/luke