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https://issues.apache.org/jira/browse/HIVE-1159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12837005#action_12837005
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Zheng Shao commented on HIVE-1159:
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Actually the changes of outputs only happen to DDL commands.
For normal "insert overwrite", the outputs are determined at compile time.
> QueryPlan.outputs should be determined at compile time
> ------------------------------------------------------
>
> Key: HIVE-1159
> URL: https://issues.apache.org/jira/browse/HIVE-1159
> Project: Hadoop Hive
> Issue Type: Improvement
> Affects Versions: 0.6.0
> Reporter: Zheng Shao
> Assignee: Zheng Shao
>
> Currently, we change QueryPlan.outputs at execution time of DDLTask,
> MoveTask. The post execution hook relies on QueryPlan.outputs to log the
> changed entities.
> This makes the serialization hard, because we need to serialize the outputs
> when each of the Tasks are done. This is even harder given that we allow
> parallel execution of tasks now.
> We should be able to determine all that at compile time.
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