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From "John Yost (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (GIRAPH-822) java.lang.ClassCastException: org.apache.giraph.conf.GiraphConfiguration cannot be cast to org.apache.hadoop.mapred.JobConf
Date Wed, 08 Jan 2014 16:09:57 GMT

     [ https://issues.apache.org/jira/browse/GIRAPH-822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Yost updated GIRAPH-822:
-----------------------------

    Description: 
Hi Everyone,

I've run into this really weird error with the following stacktrace:

Exception in thread "main" java.lang.ClassCastException: org.apache.giraph.conf.GiraphConfiguration
cannot be cast to org.apache.hadoop.mapred.JobConf
	at org.apache.hadoop.mapreduce.Job$1.run(Job.java:513)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1149)
	at org.apache.hadoop.mapreduce.Job.connect(Job.java:511)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:499)
	at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:530)
	at com.prototype.analytics.TwitterSpringRunner.run(TwitterSpringRunner.java:58)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
	at com.prototype.analytics.TwitterSpringRunner.main(TwitterSpringRunner.java:78)

Everything was working fine with my locally-built giraph version, but when I added the Giraph
1.0.0 maven dependency, this Exception was thrown.  Any ideas? 

UPDATE:
When I revert back to using GiraphRunner, the job completes successfully, so I must have dorked
up something along the way within my Tool class. Still would like to know if anyone else has
encountered this and how to fix it, thanks.

  was:
Hi Everyone,

I've run into this really weird error with the following stacktrace:

Exception in thread "main" java.lang.ClassCastException: org.apache.giraph.conf.GiraphConfiguration
cannot be cast to org.apache.hadoop.mapred.JobConf
	at org.apache.hadoop.mapreduce.Job$1.run(Job.java:513)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1149)
	at org.apache.hadoop.mapreduce.Job.connect(Job.java:511)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:499)
	at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:530)
	at com.prototype.analytics.TwitterSpringRunner.run(TwitterSpringRunner.java:58)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
	at com.prototype.analytics.TwitterSpringRunner.main(TwitterSpringRunner.java:78)

Everything was working fine with my locally-built giraph version, but when I added the Giraph
1.0.0 maven dependency, this Exception was thrown.  Any ideas? 


> java.lang.ClassCastException: org.apache.giraph.conf.GiraphConfiguration cannot be cast
to org.apache.hadoop.mapred.JobConf
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: GIRAPH-822
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-822
>             Project: Giraph
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 1.0.0
>         Environment: CentOS 6.5
>            Reporter: John Yost
>
> Hi Everyone,
> I've run into this really weird error with the following stacktrace:
> Exception in thread "main" java.lang.ClassCastException: org.apache.giraph.conf.GiraphConfiguration
cannot be cast to org.apache.hadoop.mapred.JobConf
> 	at org.apache.hadoop.mapreduce.Job$1.run(Job.java:513)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1149)
> 	at org.apache.hadoop.mapreduce.Job.connect(Job.java:511)
> 	at org.apache.hadoop.mapreduce.Job.submit(Job.java:499)
> 	at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:530)
> 	at com.prototype.analytics.TwitterSpringRunner.run(TwitterSpringRunner.java:58)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> 	at com.prototype.analytics.TwitterSpringRunner.main(TwitterSpringRunner.java:78)
> Everything was working fine with my locally-built giraph version, but when I added the
Giraph 1.0.0 maven dependency, this Exception was thrown.  Any ideas? 
> UPDATE:
> When I revert back to using GiraphRunner, the job completes successfully, so I must have
dorked up something along the way within my Tool class. Still would like to know if anyone
else has encountered this and how to fix it, thanks.



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