One more thing to look at: https://issues.apache.org/jira/browse/HIVE-10481
I couldn’t figure out why my update statement wasn’t working. I was using mixed case column names in my update statement and the update was completing without errors but the data wasn’t actually getting updated. Turns out the version of Hive I was using had the bug described in the link, that has now been fixed with a patch.
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Reply To: HIVE Table Updates/Deletes
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