Support for ns #1188
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Support for ns #1188
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@kevinjqliu can you please review my PR and let me know if i made a mistake (please check with extra caution as it is my first contribution to any open source project) |
kevinjqliu
reviewed
Sep 20, 2024
| @@ -1068,8 +1068,17 @@ def primitive(self, primitive: pa.DataType) -> PrimitiveType: | |||
| return StringType() | |||
| elif pa.types.is_date32(primitive): | |||
| return DateType() | |||
| elif isinstance(primitive, pa.Time64Type) and primitive.unit == "us": | |||
| elif isinstance(primitive, pa.Time64Type) and (primitive.unit == "us" or primitive.unit == "ns"): | |||
| primitive = cast(pa.TimestampType, primitive) | |||
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Time64Type and TimestampType and different, dont need to cast here
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| @@ -1068,8 +1068,17 @@ def primitive(self, primitive: pa.DataType) -> PrimitiveType: | |||
| return StringType() | |||
| elif pa.types.is_date32(primitive): | |||
| return DateType() | |||
| elif isinstance(primitive, pa.Time64Type) and primitive.unit == "us": | |||
| elif isinstance(primitive, pa.Time64Type) and (primitive.unit == "us" or primitive.unit == "ns"): | |||
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i think we can get rid fo the us/ns check here, since Time64Type only supports those 2 https://arrow.apache.org/docs/python/generated/pyarrow.Time64Type.html
| primitive = cast(pa.TimestampType, primitive) | ||
| if primitive.unit == "ns": | ||
| if self._downcast_ns_timestamp_to_us: | ||
| logger.warning("Iceberg does not yet support 'ns' timestamp precision. Downcasting to 'us'.") |
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lets add a test to verify that when _downcast_ns_timestamp_to_us is True, the downcasting happens
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added support for ns and enabled downcasting similar to the similar to the
pa.types.is_timestamp(primitive):, didn't enable upcasting as it wasn't mentioned in the issue