[jira] [Commented] (FLINK-4058) Error uploading JAR with dependencies using flink.bat on a Windows stand-alone instance

["Stephan Ewen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-4058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15325361#comment-15325361 ] 

Stephan Ewen commented on FLINK-4058:
-------------------------------------

That makes complete sense, thanks for the report and diagnosis.

Do you want to open a pull request with a fix?

> Error uploading JAR with dependencies using flink.bat on a Windows stand-alone instance
> ---------------------------------------------------------------------------------------
>
>                 Key: FLINK-4058
>                 URL: https://issues.apache.org/jira/browse/FLINK-4058
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Mark Nadelson
>            Priority: Critical
>
> Uploading a JAR with dependencies in a sub-directory causes an" Unable to create temporary file" IOException.  This occurs in org.apache.flink.client.program.PackagedProgram.extractContainedLibraries()
> This because of the line "name = name.replace(File.separatorChar, '_');"
> File.separatorChar in windows is the backslash (\) but files read from a Jar are always in the format of the forward slash (/).  Therefore the slash is never replaced with the '_'.   The fix is to remove the File.separatorChar with '/'.



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