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ASF GitHub Bot commented on NUTCH-2597: --------------------------------------- sebastian-nagel commented on a change in pull request #349: NUTCH-2597: fixed cleanup() URL: https://github.com/apache/nutch/pull/349#discussion_r195160633 ########## File path: src/java/org/apache/nutch/hostdb/UpdateHostDbReducer.java ########## @@ -74,6 +74,7 @@ * * @param job */ + @Override Review comment: +1 for adding missing @Override annotations. This issue is the best example why @Override should be used: to avoid that by accident a method has not the intended signature. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > NPE in updatehostdb > ------------------- > > Key: NUTCH-2597 > URL: https://issues.apache.org/jira/browse/NUTCH-2597 > Project: Nutch > Issue Type: Bug > Components: hostdb > Affects Versions: 1.15 > Reporter: Jurian Broertjes > Priority: Critical > > I get an NPE on updatehostdb. I start with a clean crawlDB & hostDB. After an > inject, I do an updatehostdb with -checkAll and get the following stacktrace: > {code} > 2018-06-13 10:45:21,958 WARN hostdb.ResolverThread - > java.lang.NullPointerException > at > org.apache.hadoop.io.SequenceFile$Writer.checkAndWriteSync(SequenceFile.java:1359) > at org.apache.hadoop.io.SequenceFile$Writer.append(SequenceFile.java:1400) > at > org.apache.hadoop.mapreduce.lib.output.SequenceFileOutputFormat$1.write(SequenceFileOutputFormat.java:83) > at > org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter.write(ReduceTask.java:558) > at > org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89) > at > org.apache.hadoop.mapreduce.lib.reduce.WrappedReducer$Context.write(WrappedReducer.java:105) > at org.apache.nutch.hostdb.ResolverThread.run(ResolverThread.java:82) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at java.lang.Thread.run(Thread.java:748) > {code} > Is this related to NUTCH-2375? > If further testing is needed, please let me know! -- This message was sent by Atlassian JIRA (v7.6.3#76005)