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https://issues.apache.org/jira/browse/SPARK-26016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16783885#comment-16783885
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Hyukjin Kwon commented on SPARK-26016:
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BTW, IIRC some codes assume other ascii compatible encodings can be supported
since utf8 is ascii compatible but I think it's better to whitelist that utf8
only is supported.
> Encoding not working when using a map / mapPartitions call
> ----------------------------------------------------------
>
> Key: SPARK-26016
> URL: https://issues.apache.org/jira/browse/SPARK-26016
> Project: Spark
> Issue Type: Bug
> Components: Java API
> Affects Versions: 2.4.0
> Reporter: Chris Caspanello
> Assignee: Sean Owen
> Priority: Major
> Fix For: 3.0.0
>
> Attachments: spark-sandbox.zip
>
>
> Attached you will find a project with unit tests showing the issue at hand.
> If I read in a ISO-8859-1 encoded file and simply write out what was read;
> the contents in the part file matches what was read. Which is great.
> However, the second I use a map / mapPartitions function it looks like the
> encoding is not correct. In addition a simple collectAsList and writing that
> list of strings to a file does not work either. I don't think I'm doing
> anything wrong. Can someone please investigate? I think this is a bug.
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