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https://issues.apache.org/jira/browse/HIVE-3410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13442566#comment-13442566
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Namit Jain commented on HIVE-3410:
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https://reviews.facebook.net/D4905
> All operators's conf should inherit from a common class
> -------------------------------------------------------
>
> Key: HIVE-3410
> URL: https://issues.apache.org/jira/browse/HIVE-3410
> Project: Hive
> Issue Type: Improvement
> Reporter: Namit Jain
>
> I faced this problem while working on HIVE-3086.
> Wanted to add a common interface to all the operator's confs.
> Currently, the operator signature is Operator<T extends Serializable>,
> which makes it difficult to add more methods to T.
> Created a common interface SerializableCloneable, and now
> Operator<T extends SerializableCloneable>.
> If we want to add more methods to SerializableCloneable in the future,
> it wont require changing so many files, so submitting it as a separate patch.
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