[#CONJ-893] DatabaseMetaData.getColumns regression causing TINYINT(x) with x

Sidenote: I don't know exactly is this is an issue of hibernate or mariadb-java-client.
But the issue occurs as soon as mariadb-java-client is upgraded from 2.7.2 to 2.7.3, thus there must have been a breaking change inside?

CREATE TABLE example (

 id bigint NOT NULL AUTO_INCREMENT,

 foo tinyint DEFAULT NULL,

 PRIMARY KEY (id)

);

@Entity

public class Example {

@Id

	@GeneratedValue(strategy = GenerationType.IDENTITY)

	public long id;

	@Column(columnDefinition = "TINYINT")

	public Integer foo;

Run the application attached. The application runs and terminates without errors.

<mariadb.version>2.7.3</mariadb.version>

2021-07-20 13:54:19.107 ERROR 66260 --- [           main] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: wrong column type encountered in column [foo] in table [example]; found [bit (Types#TINYINT)], but expecting [tinyint (Types#INTEGER)]

2021-07-20 13:54:19.108  WARN 66260 --- [           main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: wrong column type encountered in column [foo] in table [example]; found [bit (Types#TINYINT)], but expecting [tinyint (Types#INTEGER)]

This means `mariadb-2.7.3` must have introduced a change that causes this error. But I could not find any hint on this inside the changelogs. Please have a look.

[CONJ-893] DatabaseMetaData.getColumns regression causing TINYINT(x) with x > 1 to return BIT type in place of TINYINT Created: 2021-07-20 Updated: 2021-07-26 Resolved: 2021-07-26
Status:	Closed
Project:	MariaDB Connector/J
Component/s:	metadata
Affects Version/s:	2.7.3
Fix Version/s:	2.7.4

[CONJ-893] DatabaseMetaData.getColumns regression causing TINYINT(x) with x > 1 to return BIT type in place of TINYINT Created: 2021-07-20 Updated: 2021-07-26 Resolved: 2021-07-26