This documentation is for an unreleased version of Apache Flink. We recommend you use the latest stable version.

Orc Format #

Format: Serialization Schema Format: Deserialization Schema

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

Dependencies #

In order to use the ORC format the following dependencies are required for both projects using a build automation tool (such as Maven or SBT) and SQL Client with SQL JAR bundles.

<dependency>
  <groupId>org.apache.flink</groupId>
  <artifactId>flink-orc</artifactId>
  <version>2.0-SNAPSHOT</version>
</dependency>

How to create a table with Orc format #

Here is an example to create a table using Filesystem connector and Orc format.

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 Options #

Orc format also supports table properties from Table properties. For example, you can configure orc.compress=SNAPPY to enable snappy compression.

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.