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https://issues.apache.org/jira/browse/SPARK-16264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15353660#comment-15353660
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Reynold Xin commented on SPARK-16264:
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I actually think the sink interface just shouldn't expose DataFrame, and have
something similar to the foreach writer. It would be easier to maintain
compatibility in the long run.
> Allow the user to use operators on the received DataFrame
> ---------------------------------------------------------
>
> Key: SPARK-16264
> URL: https://issues.apache.org/jira/browse/SPARK-16264
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Shixiong Zhu
>
> Currently Sink cannot apply any operators on the given DataFrame because new
> DataFrame created by the operator will use QueryExecution rather than
> IncrementalExecution.
> There are two options to fix this one:
> 1. Merge IncrementalExecution into QueryExecution so that QueryExecution can
> also deal with streaming operators.
> 2. Make Dataset operators inherits the QueryExecution(IncrementalExecution is
> just a subclass of IncrementalExecution) from it's parent.
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