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https://issues.apache.org/jira/browse/TEZ-1057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14085028#comment-14085028
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Bikas Saha commented on TEZ-1057:
---------------------------------

Right. For consistency. Also in case Processor is itself exposed to some entity 
then its framework methods should not be visible.

SimpleProcessor exists for that specific case where the initialize etc can be 
empty. We could create SimpleInput, SimpleOutput. It wasnt done because  they 
would typically need to handle events etc.

> Replace interfaces with abstract classes for Processor/Input/Output classes
> ---------------------------------------------------------------------------
>
>                 Key: TEZ-1057
>                 URL: https://issues.apache.org/jira/browse/TEZ-1057
>             Project: Apache Tez
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>            Assignee: Bikas Saha
>            Priority: Blocker
>         Attachments: TEZ-1057.1.patch
>
>




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