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https://issues.apache.org/jira/browse/SPARK-16104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu resolved SPARK-16104.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 2.1.0

Issue resolved by pull request 13809
[https://github.com/apache/spark/pull/13809]

> Do not creaate CSV writer object for every flush when writing
> -------------------------------------------------------------
>
>                 Key: SPARK-16104
>                 URL: https://issues.apache.org/jira/browse/SPARK-16104
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Hyukjin Kwon
>             Fix For: 2.1.0
>
>
> Initially, CSV data source creates {{CsvWriter}} for each record but it was 
> fixed in SPARK-14031.
> However, it still creates a writer for each flush in {{LineCsvWriter}}. This 
> is not necessary. It might be better if it uses single {{CsvWriter}}.



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