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https://issues.apache.org/jira/browse/SPARK-16407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15508260#comment-15508260
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Frederick Reiss commented on SPARK-16407:
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It looks like there is a general agreement here that Structured Streaming ought
to have some way to direct the output of a streaming query to the Spark driver.
But there is a disagreement about what shape that API should take. Can we have
a discussion on this thread about what would be an acceptable design to meet
this requirement, or would it be better to move over to the dev list?
> Allow users to supply custom StreamSinkProviders
> ------------------------------------------------
>
> Key: SPARK-16407
> URL: https://issues.apache.org/jira/browse/SPARK-16407
> Project: Spark
> Issue Type: Improvement
> Components: Streaming
> Reporter: holdenk
>
> The current DataStreamWriter allows users to specify a class name as format,
> however it could be easier for people to directly pass in a specific provider
> instance - e.g. for user equivalent of ForeachSink or other sink with
> non-string parameters.
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