: yes i am running 1.5, Any idea how we can run Solr 1.4 using Java 1.5 Solr 1.4 works just fine with Java 1.5 -- even when Using the DataImportHandler.
there are some features of DIH like the ScriptTransformer that requires java 1.6, but that's not your issue... : > Last I encountered that exception was with the usage of String.isEmpty : > which is a 1.6 novelty. ...the line in question in the stack trace provided has nothign to do with String.isEmpty. >> Caused by: java.lang.NoSuchMethodError: isEmpty >> at >> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:391) the object in question is a DocWrapper which inherits from SolrInputDocument which defines isEmpty. if you are getting this error it suggests that something is wonky with your classpath, and you probably have multiple versions of some solr jars getting included by mistake -- in particular an old copy of the solr-common jar where SolrInputDocument is defined. -Hoss
