Vijay created SPARK-4402:
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Summary: 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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