Gremlin Types

The Gremlin destination (v2.0.0 and later) supports most Apache Arrow (opens in a new tab) types. The following table shows the supported types and how they are mapped to Gremlin data types.

Arrow Column Type	Supported?	Gremlin Type
Binary	✅ Yes	`Bytes`
Boolean	✅ Yes	`Boolean`
Date32	✅ Yes	`String`
Date64	✅ Yes	`String`
Decimal	✅ Yes	`String`
Dense Union	✅ Yes	`String`
Dictionary	✅ Yes	`String`
Duration[ms]	✅ Yes	`String`
Duration[ns]	✅ Yes	`String`
Duration[s]	✅ Yes	`String`
Duration[us]	✅ Yes	`String`
Fixed Size List	✅ Yes	`String`
Float16	✅ Yes	`String`
Float32	✅ Yes	`Float`
Float64	✅ Yes	`Float`
Inet	✅ Yes	`String`
Int8	✅ Yes	`Integer`
Int16	✅ Yes	`Integer`
Int32	✅ Yes	`Integer`
Int64	✅ Yes	`Integer`
Interval[DayTime]	✅ Yes	`String`
Interval[MonthDayNano]	✅ Yes	`String`
Interval[Month]	✅ Yes	`String`
JSON	✅ Yes	`String`
Large Binary	✅ Yes	`Bytes`
Large List	✅ Yes	`String`
Large String	✅ Yes	`String`
List	✅ Yes	`String` or `List` †
MAC	✅ Yes	`String`
Map	✅ Yes	`String`
String	✅ Yes	`String`
Struct	✅ Yes	`String`
Timestamp[ms]	✅ Yes	`String` *
Timestamp[ns]	✅ Yes	`String`
Timestamp[s]	✅ Yes	`String`
Timestamp[us]	✅ Yes	`String`
UUID	✅ Yes	`String`
Uint8	✅ Yes	`String`
Uint16	✅ Yes	`Integer`
Uint32	✅ Yes	`Integer`
Uint64	✅ Yes	`Integer`
Union	✅ Yes	`String`

String-persisted data types are encoded according to the Arrow String Representation specification.

Notes

* Timestamps are converted to strings in the format yyyy-MM-dd HH:mm:ss.SSSSSSSSS (UTC timezone) (e.g. 2021-01-01 00:00:00.000000000). _cq_sync_time column is persisted in native Timestamp type.

† List types are persisted as-is only if complete_types option is enabled. Otherwise, they are converted to strings.

NUL bytes are stripped from strings.

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