We've begun the cleanup process that should resolve the duplicate data. We expect it to take 24-48 hours to fully complete, during which Redshift data in the range of 7/9 to 7/11 may be temporarily missing.
Posted Jul 12, 2016 - 02:15 PDT
Identified
We identified an issue that caused data loaded into Amazon Redshift from 7/9 to 7/11 to potentially be duplicated. We're working on resolving this right now, and will have an update later tonight.