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Solr Error: A SPI class of type org.apache.lucene.index.codecs.Codec with name ‘Lucene40′ does not exist

When you are testing Solr in Eclipse, you may encounter the problem that “A SPI class of type org.apache.lucene.index.codecs.Codec with name ‘Lucene40′ does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: []”
The fast answer to tackle this problem is to add the lucene-core*.jar to the libaries of your project, and make sure that the file /META-INF/services/org.apache.lucene.index.codecs.Codec is included in lucene-core*.jar. 
The problem is caused by the class of java.util.ServiceLoader used in NamedSPILoader of Solr. When ServiceLoader creates a new service provider, it will extract some information from /META-INF/services/org.apache.lucene.index.codecs.Codec. Therefore when you use build classes rather than the lucene-core*.jar file, the needed information can not be obtained. By now, I think you can handle this problem yourself. 
For more information about How ServiceLoader work, please refer to: 

2 Comments:

sri said...

Thanks for sharing this informative content.,
Turient is an All-in-one platform for all our teaching needs. If Teaching is your passion ,enabling is ours
Read the Informative blog - 11 Free Teaching Tools for Online Teachers

11 Free Teaching Tools for Online Teachers
Free Teaching Tools

sri said...


Thanks for sharing this informative content.,
Turient is an All-in-one platform for all our teaching needs. If Teaching is your passion ,enabling is ours
Read the Informative blog - 11 Free Teaching Tools for Online Teachers

Turient
Free Teaching Tools for Online Teachers

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