stack trace not clear when there is a SQL error
-----------------------------------------------
Key: SOLR-1269
URL: https://issues.apache.org/jira/browse/SOLR-1269
Project: Solr
Issue Type: Improvement
Components: contrib - DataImportHandler
Affects Versions: 1.4
Reporter: Erik Hatcher
When setting up a new JDBC datasource and the SQL isn't right yet, we are
getting a stack trace that says ClassNotFoundException, but that is misleading.
A cleaner stack trace is warranted, indicating the actual error.
[actual SQL statement omitted]
org.apache.solr.handler.dataimport.DataImportHandlerException: Unable to
execute query: SELECT ..... Processing Document # 1
at
org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.<init>(JdbcDataSource.java:250)
at
org.apache.solr.handler.dataimport.JdbcDataSource.getData(JdbcDataSource.java:207)
at
org.apache.solr.handler.dataimport.JdbcDataSource.getData(JdbcDataSource.java:40)
at
org.apache.solr.handler.dataimport.SqlEntityProcessor.initQuery(SqlEntityProcessor.java:58)
at
org.apache.solr.handler.dataimport.SqlEntityProcessor.nextRow(SqlEntityProcessor.java:71)
at
org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:237)
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:343)
at
org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:224)
at
org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:167)
at
org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:333)
at
org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:393)
at
org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:372)
Caused by: java.lang.ClassNotFoundException: Unable to load null or
org.apache.solr.handler.dataimport.null
at
org.apache.solr.handler.dataimport.DocBuilder.loadClass(DocBuilder.java:723)
at
org.apache.solr.handler.dataimport.JdbcDataSource$1.call(JdbcDataSource.java:188)
at
org.apache.solr.handler.dataimport.JdbcDataSource$1.call(JdbcDataSource.java:127)
at
org.apache.solr.handler.dataimport.JdbcDataSource.getConnection(JdbcDataSource.java:362)
at
org.apache.solr.handler.dataimport.JdbcDataSource.access$300(JdbcDataSource.java:40)
at
org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.<init>(JdbcDataSource.java:237)
... 11 more
Caused by: java.lang.NullPointerException
at
java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
at
org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:280)
at
org.apache.solr.handler.dataimport.DocBuilder.loadClass(DocBuilder.java:713)
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