Julien Le Dem created ARROW-315:
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Summary: Finalize timestamp field
Key: ARROW-315
URL: https://issues.apache.org/jira/browse/ARROW-315
Project: Apache Arrow
Issue Type: Improvement
Components: Format
Reporter: Julien Le Dem
Assignee: Julien Le Dem
support int64 UNIX timestamps with a particular resolution.
Parquet supports timestamp millis and micros (no nanos)
https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#datetime-types
currently Arrow timestamps have a timezone field.
https://github.com/apache/arrow/blob/master/format/Message.fbs#L67
proposal to change timestamp as follows:
- remove "timestamp" field and say it's UTC
- add unit field (MICROS | MILLIS)
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