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From "wilco sheh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NUTCH-1891) Can't run nutch2.3-snapshot on hadoop2.4.0 using gora0.5 and mongodb as backend datastore
Date Tue, 25 Nov 2014 06:58:12 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-1891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14224128#comment-14224128
] 

wilco sheh commented on NUTCH-1891:
-----------------------------------

I solved this problem after updated gora-core-0.5.jar to gora-core-0.5.3.jar which can be
found here http://search.maven.org/remotecontent?filepath=com/argonio/gora/gora-core/0.5.3/gora-core-0.5.3.jar

> Can't run nutch2.3-snapshot on hadoop2.4.0 using gora0.5 and mongodb as backend datastore
> -----------------------------------------------------------------------------------------
>
>                 Key: NUTCH-1891
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1891
>             Project: Nutch
>          Issue Type: Bug
>          Components: storage
>    Affects Versions: 2.3
>         Environment: nutch-2.3-snapshot, hadoop2.4,gora0.5 mongodb
>            Reporter: wilco sheh
>            Priority: Critical
>             Fix For: 2.3
>
>
> java.lang.Exception: java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.TaskAttemptContext,
but class was expected
> 	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.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.TaskAttemptContext,
but class was expected
> 	at org.apache.gora.mapreduce.GoraOutputFormat.getRecordWriter(GoraOutputFormat.java:83)
> 	at org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.<init>(MapTask.java:624)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:744)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
> 	at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:243)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 	at java.lang.Thread.run(Thread.java:744)



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