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https://issues.apache.org/jira/browse/FLINK-9195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16440984#comment-16440984
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Michael Latta commented on FLINK-9195:
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Those sinks are for debugging of simple jobs. They are documented as such. I
see no need to force new users to create similar sinks for early debugging and
familiarization efforts. They were very useful in the initial stages of
getting to know flink.
> Delete non-well-defined output methods on DataStream
> ----------------------------------------------------
>
> Key: FLINK-9195
> URL: https://issues.apache.org/jira/browse/FLINK-9195
> Project: Flink
> Issue Type: Improvement
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
> Priority: Major
> Fix For: 1.6.0
>
>
> Some output methods on {{DataStream}} that write text to files are not safe
> to use in a streaming program as they have no consistency guarantees. They
> are:
> - {{writeAsText()}}
> - {{writeAsCsv()}}
> - {{writeToSocket()}}
> - {{writeUsingOutputFormat()}}
> Along with those we should also delete the {{SinkFunctions}} that they use.
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