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Julian Hyde commented on ARROW-413: ----------------------------------- By the way, Phoenix uses longs to represent dates and not all the code rounds them (d -= d % 8640000) and it gets tricky. (Who's going to burn CPU cycles rounding a value that they're 99.9% sure has been rounded?!) As a result you're never quite sure whether two date values have been rounded, and sometimes someone from Moscow writes some data that drifts into the previous day. > DATE type is not specified clearly > ---------------------------------- > > Key: ARROW-413 > URL: https://issues.apache.org/jira/browse/ARROW-413 > Project: Apache Arrow > Issue Type: Bug > Components: Format > Affects Versions: 0.1.0 > Reporter: Uwe L. Korn > > Currently the DATE type is not specified anywhere and needs to be documented. -- This message was sent by Atlassian JIRA (v6.3.4#6332)