[jira] [Commented] (FLINK-2069) writeAsCSV function in DataStream Scala API creates no file

["Chiwan Park (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-2069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568579#comment-14568579 ] 

Chiwan Park commented on FLINK-2069:
------------------------------------

Hi. I am concerned about decreasing performance. Currently, {{CsvOutputFormat}} uses {{BufferedOutputStream}} to increase writing performance. In streaming job, Calling {{flush()}} is reasonable to create output immediately. But in batch job, the calling {{flush()}} for every output record cancels the benefit of buffered output.

What do you think?

> writeAsCSV function in DataStream Scala API creates no file
> -----------------------------------------------------------
>
>                 Key: FLINK-2069
>                 URL: https://issues.apache.org/jira/browse/FLINK-2069
>             Project: Flink
>          Issue Type: Bug
>          Components: Streaming
>            Reporter: Faye Beligianni
>            Priority: Blocker
>              Labels: Streaming
>             Fix For: 0.9
>
>
> When the {{writeAsCSV}} function is used in the DataStream Scala API, no file is created in the specified path.



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