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https://issues.apache.org/jira/browse/TEZ-1936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14274642#comment-14274642
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Jeff Zhang commented on TEZ-1936:
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[~rajesh.balamohan] This is caused by TEZ-1892, I am fixing it.
> TestDAGVerify seems to be broken
> ---------------------------------
>
> Key: TEZ-1936
> URL: https://issues.apache.org/jira/browse/TEZ-1936
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Rajesh Balamohan
>
> >>
> Tests run: 30, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.892 sec
> <<< FAILURE!
> BinaryOutput(org.apache.tez.dag.api.TestDAGVerify) Time elapsed: 0.036 sec
> <<< ERROR!
> java.lang.IllegalArgumentException: Edge [v1 : MapProcessor] -> [v2 :
> MapProcessor] ({ SCATTER_GATHER : dummy input class >> PERSISTED >> dummy
> output class >> NullEdgeManager }) already defined!
> at org.apache.tez.dag.api.DAG.addEdge(DAG.java:266)
> at
> org.apache.tez.dag.api.TestDAGVerify.BinaryOutput(TestDAGVerify.java:858)
> >>
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