Christophe PRÉAUD created SPARK-4764:
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Summary: Ensure that files are fetched atomically
Key: SPARK-4764
URL: https://issues.apache.org/jira/browse/SPARK-4764
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 1.1.0
Reporter: Christophe PRÉAUD
Priority: Minor
It does not seem necessary in the doFetchFile method to first download the file
into a local directory then move it (it may cause a copy instead of a rename).
tempFile (where the file is downloaded) should be created in the same directory
than targetFile, so that the move from tempFile to targetFile is always atomic
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