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Roadmap to becoming a developer in 2022
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developer-roadmap/src/data/best-practices/aws/content/s3-hive-results.md

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Hive Results

Specify a directory on S3 for Hive results.

If you use Hive to output results to S3, you must specify a directory in the bucket, not the root of the bucket, otherwise you'll get a rather unhelpful NullPointerException with no real explanation as to why.