TiSpark with multiple catalogs

This article introduces how to use TiSpark with multiple catalogs, take hive for example.

Version

• TiSpark: 2.5.1
• Spark: 3.1

Config

Add the following configs into spark.default.conf

spark.sql.extensions  org.apache.spark.sql.TiExtensions
spark.tispark.pd.addresses  ${your_pd_adress}
spark.sql.catalog.tidb_catalog  org.apache.spark.sql.catalyst.catalog.TiCatalog
spark.sql.catalog.tidb_catalog.pd.addresses  ${your_pd_adress}

Use TiSpark with Hive

1. Create TiDB table with JDBC

CREATE TABLE `test`.`tidb` (
  `id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  PRIMARY KEY (`id`)
);

2. run spark-sql

./bin/spark-sql --jars tispark-assembly-3.0-2.5.1.jar

3. create hive table and insert

CREATE TABLE IF NOT EXISTS hive (id INT, sex STRING) USING hive;
insert into spark_catalog.default.hive values(1,'male');

4. select from TiDB and hive

select * from tidb_catalog.test.tidb a left join spark_catalog.default.hive b on a.id = b.id

Use TiSpark with MySQL

make sure you have added the mysql-connector-java into spark jars.

1. create TiDB table with JDBC

CREATE TABLE `test`.`tidb` (
  `id` int(11) NOT NULL, 
  `name` varchar(255) NOT NULL, 
  PRIMARY KEY (`id`)
);

2. create MySQL table with JDBC

CREATE TABLE `test`.`mysql`(
  `id` int(11) NOT NULL, 
  `age` int(11) NOT NULL, 
  PRIMARY KEY (`id`)
);

3. run spark-sql

./bin/spark-sql --jars tispark-assembly-3.0-2.5.1.jar

4. create temp view for MySQL

CREATE TEMPORARY VIEW jdbcTable USING jdbc OPTIONS(url "jdbc:mysql://127.0.0.1:3306/test?useSSL=false",dbtable "mysql",user 'root', password 'password');

5. select from TiDB and MySQL

select * from tidb_catalog.test.tidb a left join jdbcTable b on a.id = b.id;