Parquet

Read from or write to an Apache Parquet file.

Parameter

File

Path (e.g. relative like ‘path/filename.orc’ or absolute ‘hdfs:///path/filename.parquet’).

• Datatype: resource
• Default Value: None

Uri pattern

A pattern used to construct the entity URI. If not provided the prefix + the line number is used. An example of such a pattern is ‘urn:zyx:{id}’ where id is a name of a property.

• Datatype: string
• Default Value: None

Properties

Comma-separated list of URL-encoded properties. If not provided, the list of properties is read from the first line.

• Datatype: string
• Default Value: None

Partition

Optional specification of the attribute for output partitioning

• Datatype: string
• Default Value: None

Compression

Optional compression algorithm (e.g. snappy, zlib)

• Datatype: string
• Default Value: None

Charset

The file encoding, e.g., UTF8, ISO-8859-1

• Datatype: string
• Default Value: UTF-8

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