Quartz + Spring Boot: Concurrent execution of multiple jobs - spring-boot

Question

I have simple Spring Boot (2.5) application to get multiple data from multiple sources at once. I have created 3 job classes, each of them have several tasks to do. First one have two tasks (defined in separate methods) to do, second have 3 and thirds have 2 - there's 7 in all count.
Each job have this construction:
#Component
public class FirstJob {
[...]
#Scheduled(cron = "0 * * * * *")
public void getLastTaskStatistics() {
[...]
}
#Scheduled(cron = "0 * * * * *")
public void getMetersStatusCount() {
[...]
}
}
#Component
public class SecondJob {
[...]
#Scheduled(cron = "0 * * * * *")
public void getIndexStats() {
[...]
}
#Scheduled(cron = "0 * * * * *")
public void getCollectionStats() {
[...]
}
#Scheduled(cron = "0 * * * * *")
public void getActiveMetersStats() {
[...]
}
}
Third one is the same. As you can see, all methods have fixed and the same firing time. Everything is working almost properly, but I want to execute them in parallel, in available execution thread pool: actually observation is different, all tasks are executed in single execution task (always named scheduling-1), and also in sequential. A part of log:
2021-05-04 14:39:00.020 INFO 9004 --- [ scheduling-1] FirstJob : getMetersStatusCount: start
2021-05-04 14:39:00.166 INFO 9004 --- [ scheduling-1] FirstJob : getMetersStatusCount: end
2021-05-04 14:39:00.166 INFO 9004 --- [ scheduling-1] FirstJob : getLastTaskStatistics: start
2021-05-04 14:39:00.235 INFO 9004 --- [ scheduling-1] FirstJob : getLastTaskStatistics: end
2021-05-04 14:39:00.235 INFO 9004 --- [ scheduling-1] SecondJob : getActiveMetersStats: start
2021-05-04 14:39:05.786 INFO 9004 --- [ scheduling-1] SecondJob : getActiveMetersStats: end
2021-05-04 14:39:05.786 INFO 9004 --- [ scheduling-1] SecondJob : getCollectionStats: start
2021-05-04 14:39:05.833 INFO 9004 --- [ scheduling-1] SecondJob : getCollectionStats: end
2021-05-04 14:39:05.833 INFO 9004 --- [ scheduling-1] SecondJob : getIndexStats: start
2021-05-04 14:39:05.902 INFO 9004 --- [ scheduling-1] SecondJob : getIndexStats: end
2021-05-04 14:39:05.902 INFO 9004 --- [ scheduling-1] ThirdJob : getExchangesDetails: start
2021-05-04 14:39:06.187 INFO 9004 --- [ scheduling-1] ThirdJob : getExchangesDetails: end
2021-05-04 14:39:06.187 INFO 9004 --- [ scheduling-1] ThirdJob : getQueueDetails: start
2021-05-04 14:39:06.303 INFO 9004 --- [ scheduling-1] ThirdJob : getQueueDetails: end
Please help me: how to avoid single instance of Quartz executor and run in parallel all tasks in all jobs? Quartz auto configuration in application.properties is based on default values, except:
spring.quartz.properties.org.quartz.scheduler.batchTriggerAcquisitionMaxCount=5
(change made for experiment purposes, value differ from default '1', but nothing interesting happened).

Answer 1

You can configure the pool size. Default is 1.
Sample:
spring.task.scheduling.pool.size=10

Answer 2

Why don't you try the async approach i.e. from a single #scheduled method call other method in async manners.
you can follow the approach over here How to asynchronously call a method in Java
eg:
CompletableFuture.runAsync(() -> {
// method calls
});
or
CompletableFuture.allOf(
CompletableFuture.runAsync(() -> ...),
CompletableFuture.runAsync(() -> ...)
);

Answer 3

Thanks to Ezequiel, it's enough to set:
spring.task.scheduling.pool.size=10
in application.properties, now all tasks starts at the same time.