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https://issues.apache.org/jira/browse/SPARK-7124?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-7124.
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Resolution: Not A Problem
> Add functions to check for file and directory existence
> -------------------------------------------------------
>
> Key: SPARK-7124
> URL: https://issues.apache.org/jira/browse/SPARK-7124
> Project: Spark
> Issue Type: Improvement
> Components: Input/Output
> Reporter: Sam Steingold
>
> How do I check that a file or directory exists?
> For file, I was told to do {{sc.textFile().first()}} which seems wrong:
> # it initiates unnecessary i/o which could be huge (what is the file is
> binary and has no newlines?)
> # it fails for 0-length files (e.g., we write 0-length {{_SUCCESS}} files in
> directories after they have been successfully written)
> it appears that Spark needs bona file {{isFile}} and {{isDirectory}} methods.
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