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How to get the hashes and metadata of files using pig or hive?

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How to get the hashes and metadata of files using pig or hive?

New Contributor

I have many files and I need to get a list of hashes and metadata for the files, so that they can be compared with a whitelist. Can I do this using pig or hive or do I have to "preprocess" and grab this info before putting it into Hadoop? What is the best way to do this?

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