Hi, I got this one a while back. This is one of the reasons I've committed a patch to Nutch2 that disable the creation of tmp files during indexing. (They are not needed anymore.) Because: In order to clean up the tmp files, they are removed by a finally block. But if something goes wrong during the creation of the job and the output path is still null, you get this terrible exception that has nothing to do with the actual error.
So to fix it: Apply patch in NUTCH-1444<https://issues.apache.org/jira/browse/NUTCH-1444> or update to Nutch2x head. Ferdy On Mon, Aug 6, 2012 at 9:21 PM, Bai Shen <[email protected]> wrote: > I'm working on writing a Nutch 2 plugin. Whenever something is configured > wrong, I don't get any valid logging info. Instead, I always get the exact > same NPE. > > SolrIndexerJob: java.lang.NullPointerException > at > > org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.getOutputPath(FileOutputFormat.java:160) > at > > org.apache.nutch.indexer.solr.SolrIndexerJob.indexSolr(SolrIndexerJob.java:74) > at > org.apache.nutch.indexer.solr.SolrIndexerJob.run(SolrIndexerJob.java:90) > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) > at > org.apache.nutch.indexer.solr.SolrIndexerJob.main(SolrIndexerJob.java:99) > > Any ideas how to get Nutch to actually give me a useful stack trace? > > Thanks. >
