In-memory repository with Spring Boot [BATCH-2704]

[spring-projects-issues]

Nicolas Roussel opened BATCH-2704 and commented

There are several problems that prevent users from using an in-memory repository with Spring Boot :

• The documentation is incorrect: this one needs a dataSource (https://docs.spring.io/spring-batch/4.0.x/reference/html/index-single.html#inMemoryRepository)

• spring-boot-starter-batch depends on HikariCP. Then, DataSourceConfiguration$Hikari tries to create a HikariDataSource... This fails if we have no database.

• Adding a MapJobRepositoryFactoryBean doesn't work, it seems that we need to redefine the configurer

To make this work I need to:

1. Exclude HikariCP
2. Add a component extending DefaultBatchConfigurer

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Reference URL: https://docs.spring.io/spring-batch/4.0.x/reference/html/index-single.html#inMemoryRepository

[spring-projects-issues]

Michael Minella commented

This really is a Spring Boot issue, not a Spring Batch issue. When using Spring Batch without Spring Boot, things work as documented. Spring Boot is a framework intended for building production grade applications and the Map based JobRepository implementation is definitely not production grade so I personally agree with their decision to add that additional requirement. If you'd like to take it up with the Spring Boot team, you can log an issue with them here: https://github.com/spring-projects/spring-boot/issues