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https://issues.apache.org/jira/browse/CASSANDRA-5201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13596999#comment-13596999
]
Jeremy Hanna commented on CASSANDRA-5201:
-----------------------------------------
I wonder if it would be preferable to have all of the code in tree in the same
jar still, but have different package paths, like org.apache.cassandra.hadoop
(for backwards compatibility) and org.apache.cassandra.hadoop2. Would that
work?
> Cassandra/Hadoop does not support current Hadoop releases
> ---------------------------------------------------------
>
> Key: CASSANDRA-5201
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5201
> Project: Cassandra
> Issue Type: Bug
> Components: Hadoop
> Affects Versions: 1.2.0
> Reporter: Brian Jeltema
> Assignee: Dave Brosius
> Attachments: 5201_a.txt
>
>
> Using Hadoop 0.22.0 with Cassandra results in the stack trace below.
> It appears that version 0.21+ changed org.apache.hadoop.mapreduce.JobContext
> from a class to an interface.
> Exception in thread "main" java.lang.IncompatibleClassChangeError: Found
> interface org.apache.hadoop.mapreduce.JobContext, but class was expected
> at
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSplits(ColumnFamilyInputFormat.java:103)
> at
> org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:445)
> at
> org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:462)
> at
> org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:357)
> at org.apache.hadoop.mapreduce.Job$2.run(Job.java:1045)
> at org.apache.hadoop.mapreduce.Job$2.run(Job.java:1042)
> 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:1153)
> at org.apache.hadoop.mapreduce.Job.submit(Job.java:1042)
> at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1062)
> at MyHadoopApp.run(MyHadoopApp.java:163)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69)
> at MyHadoopApp.main(MyHadoopApp.java:82)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:192)
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