spark streaming - how to purge old data files in data directory

[Vamsi Krishna]

Hi,

I'm on HDP 2.3.2 cluster (Spark 1.4.1).
I have a spark streaming app which uses 'textFileStream' to stream simple
CSV files and process.
I see the old data files that are processed are left in the data directory.
What is the right way to purge the old data files in data directory on HDFS?

Thanks,
Vamsi Attluri
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Vamsi Attluri