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https://issues.apache.org/jira/browse/SPARK-4402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vijay resolved SPARK-4402.
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Resolution: Not a Problem
> Output path validation of an action statement resulting in runtime exception
> ----------------------------------------------------------------------------
>
> Key: SPARK-4402
> URL: https://issues.apache.org/jira/browse/SPARK-4402
> Project: Spark
> Issue Type: Wish
> Reporter: Vijay
> Priority: Minor
>
> Output path validation is happening at the time of statement execution as a
> part of lazyevolution of action statement. But if the path already exists
> then it throws a runtime exception. Hence all the processing completed till
> that point is lost which results in resource wastage (processing time and CPU
> usage).
> If this I/O related validation is done before the RDD action operations then
> this runtime exception can be avoided.
> I believe similar validation/ feature is implemented in hadoop also.
> Example:
> SchemaRDD.saveAsTextFile() evaluated the path during runtime
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