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https://issues.apache.org/jira/browse/SPARK-14914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15257720#comment-15257720
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Sean Owen commented on SPARK-14914:
-----------------------------------

Please don't make separate PRs. Honestly, I do not think that *building* and 
developing on Windows is supported. I don't think running on Windows is really 
supported either. If we can do small things to make it work at runtime, OK, but 
it's not worth a bunch of complexity to do that.

> Test Cases fail on Windows
> --------------------------
>
>                 Key: SPARK-14914
>                 URL: https://issues.apache.org/jira/browse/SPARK-14914
>             Project: Spark
>          Issue Type: Test
>            Reporter: Tao LI
>
> There are lots of test failure on windows. Mainly for the following reasons:
> 1. resources (e.g., temp files) haven't been properly closed after using, 
> thus IOException raised while deleting the temp directory. 
> 2. Command line too long on windows. 
> 3. File path problems caused by the drive label and back slash on absolute 
> windows path. 
> 4. Simply java bug on windows
>    a. setReadable doesn't work on windows for directories. 
>    b. setWritable doesn't work on windows
>    c. Memory-mapped file can't be read at the same time. 



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