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From Josh Wills <jwi...@cloudera.com>
Subject Re: Yarnchild error : crunch-0.7.0
Date Tue, 25 Feb 2014 19:43:05 GMT
Hrm-- that's usually related to the API changes between hadoop1 and
hadoop2. How did you build crunch, exactly? Did you use -Dcrunch.platform=2?

J


On Tue, Feb 25, 2014 at 11:37 AM, Bill Sparks <jsparks@cray.com> wrote:

>  Can anyone shed some light on why I would be getting the following error
> when submitting a simple crunch wordcount example. Other Hadoop MR
> applications work, just it seems that Crunch is confused about some class
> definitions.
>
>  I'm running hadoop-2.0.6-alpha and have build crunch to match.
>
>  Hadoop 2.0.6-alpha
> Subversion Unknown -r ca4c88898f95aaab3fd85b5e9c194ffd647c2109
> Compiled by jenkins on 2013-10-30T07:19Z
> From source with checksum 95e88b2a9589fa69d6d5c1dbd48d4e
>
>
>  2014-02-25 13:23:00,049 INFO [main] org.apache.hadoop.mapred.MapTask:
> bufstart = 0; bufvoid = 268435456
> 2014-02-25 13:23:00,049 INFO [main] org.apache.hadoop.mapred.MapTask:
> kvstart = 67108860; length = 16777216
> 2014-02-25 13:23:00,070 FATAL [main] org.apache.hadoop.mapred.YarnChild:
> Error running child : java.lang.IncompatibleClassChangeError:
> org/apache/hadoop/mapreduce/JobContext.getConfiguration()Lorg/apache/hadoop/conf/Configuration;
> at
> org.apache.crunch.impl.mr.run.CrunchTaskContext.<init>(CrunchTaskContext.java:42)
> at org.apache.crunch.impl.mr.run.CrunchMapper.setup(CrunchMapper.java:37)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:142)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:757)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:158)
> at java.security.AccessController.doPrivileged(AccessController.java:366)
> at javax.security.auth.Subject.doAs(Subject.java:572)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1478)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:153)
>
>


-- 
Director of Data Science
Cloudera <http://www.cloudera.com>
Twitter: @josh_wills <http://twitter.com/josh_wills>

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