Orc

The Apache Orc format allows to read and write Orc data.

Example of Use

    CREATE TABLE user_behavior (
      user_id BIGINT,
      item_id BIGINT,
      category_id BIGINT,
      behavior STRING,
      ts TIMESTAMP(3),
      dt STRING
    ) PARTITIONED BY (dt) WITH (
      'connector' = 'filesystem',
      'path' = '/tmp/user_behavior',
      'format' = 'orc'
    )

Format Option

Option	Required	Default	Type	Description
format	yes	(none)	String	Specify what format to use, here should be ‘orc’.

Data Type Mapping

Orc format type mapping is compatible with Apache Hive. The following table lists the type mapping from Flink type to Orc type.

Flink Data Type	Orc physical type	Orc logical type
Flink Data Type	Orc physical type	Orc logical type
CHAR	bytes	CHAR
VARCHAR	bytes	VARCHAR
STRING	bytes	STRING
BOOLEAN	long	BOOLEAN
BYTES	bytes	BINARY
DECIMAL	decimal	DECIMAL
TINYINT	long	BYTE
SMALLINT	long	SHORT
INT	long	INT
BIGINT	long	LONG
FLOAT	double	FLOAT
DOUBLE	double	DOUBLE
DATE	long	DATE
TIMESTAMP	timestamp	TIMESTAMP
ARRAY	none	LIST
MAP	none	MAP
ROW	none	STRUCT