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https://issues.apache.org/jira/browse/SPARK-15899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15328056#comment-15328056
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Sean Owen commented on SPARK-15899:
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OK, I had assumed that absolute paths on Windows would have to be specified
like {{/c:/paths/to}}. I know that normal Windows paths are {{c:\paths\to}} of
course, but this is a somewhat different context.
OK, so what is the value of the System property user.dir on Windows? does it
start with c: and not /c: ? Yeah, then I see that this needs some special
handling. You're right, we could have a utility method that just adds a {{/}}
at the start if none is present, but that would silently turn relative paths
into non-relative.
Can we use the {{File}} or {{Paths}} API to really do this right? it should
give a URI object whose string rep is, I hope, exactly what's desired.
> file scheme should be used correctly
> ------------------------------------
>
> Key: SPARK-15899
> URL: https://issues.apache.org/jira/browse/SPARK-15899
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Kazuaki Ishizaki
> Priority: Minor
>
> [A RFC|https://www.ietf.org/rfc/rfc1738.txt] defines file scheme as
> {{file://host/}} or {{file:///}}.
> [Wikipedia|https://en.wikipedia.org/wiki/File_URI_scheme]
> [Some code
> stuffs|https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala#L58]
> use different prefix such as {{file:}}.
> It would be good to prepare a utility method to correctly add {{file://host}}
> or {{file://} prefix.
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