[
https://issues.apache.org/jira/browse/NUTCH-2375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16079396#comment-16079396
]
ASF GitHub Bot commented on NUTCH-2375:
---------------------------------------
lewismc commented on issue #188: NUTCH-2375 Upgrade the code base from
org.apache.hadoop.mapred to org.apache.hadoop.mapreduce
URL: https://github.com/apache/nutch/pull/188#issuecomment-313890439
@Omkar20895 start with ```TestSegmentMergerCrawlDatums.java```, the primary
issue is as follows
```
2017-07-08 17:27:43,515 WARN mapred.LocalJobRunner
(LocalJobRunner.java:run(560)) - job_local1442546213_0007
java.lang.Exception: java.lang.ClassCastException:
org.apache.nutch.crawl.CrawlDatum cannot be cast to
org.apache.nutch.metadata.MetaWrapper
at
org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)
at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:522)
Caused by: java.lang.ClassCastException: org.apache.nutch.crawl.CrawlDatum
cannot be cast to org.apache.nutch.metadata.MetaWrapper
at
org.apache.nutch.segment.SegmentMerger$SegmentMergerMapper.map(SegmentMerger.java:397)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at
org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:243)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
```
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> Upgrade the code base from org.apache.hadoop.mapred to
> org.apache.hadoop.mapreduce
> ----------------------------------------------------------------------------------
>
> Key: NUTCH-2375
> URL: https://issues.apache.org/jira/browse/NUTCH-2375
> Project: Nutch
> Issue Type: Improvement
> Components: deployment
> Reporter: Omkar Reddy
>
> Nutch is still using the deprecated org.apache.hadoop.mapred dependency which
> has been deprecated. It need to be updated to org.apache.hadoop.mapreduce
> dependency.
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