Apache Parquet User Attributes

Readers: For information on the parameters in this dialog that are common to all readers, see:

About Reader Feature Types: User Attributes

Writers: For information on the parameters in this dialog that are common to all writers, see:

Editing Writer Feature Types: User Attributes

User attributes for this format are defined below.

Name is the name of the attribute to be written.

Type	Description
boolean	Represents true/false data.
binary	Represents variable-length binary data.
bson	Represents an embedded BSON document.
date	Represents date data.
decimal	Represents fixed width signed decimal data. Width must be a non-zero positive integer. Precision must be a positive integer less than width or default 0. The maximum supported width is 38.
double	Represents 64-bit floating precision numbers.
enum	Represents enumerated type values.
float	Represents 32-bit floating precision numbers.
int8	Represents 8-bit signed integers.
int16	Represents 16-bit signed integers.
int32	Represents 32-bit signed integers.
int64	Represents 64-bit signed integers.
interval	Represents an interval of time as a number of months, days, and milliseconds independent of any timezone or date.
json	Represents an embedded JSON document.
string	Represents variable length UTF-8 encoded character strings.
time32	Represents time data that is adjusted to UTC with millisecond precision.
time64	Represents time data that is adjusted to UTC with nanosecond precision.
timestamp	Represents a moment in time that is adjusted to UTC with nanosecond precision. The supported timestamp range with this precision is between 1677-09-21 00:12:43 and 2262-04-11 23:47:16.
uint8	Represents 8-bit unsigned integers.
uint16	Represents 16-bit unsigned integers.
uint32	Represents 32-bit unsigned integers.
uint64	Represents 64-bit unsigned integers.
uuid	Represents a universally unique identifier. The attribute value must be valid UUID. For example: 00112233-4455-6677-8899-aabbccddeeff
x,y,z-coordinate	Coordinate fields store 64-bit floating point values used to create the x, y, and (optionally) z coordinates of a point geometry for the row. The point geometry will be created in addition to the attributes of coordinate types.