same thread name for ThreadPoolTaskExecutor - spring

Question

Below is my config for Executor
#Configuration
#EnableAsync
public class AsyncServiceExecutorConfig extends AsyncConfigurerSupport {
#Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(xxx.getCorePoolSize());
executor.setMaxPoolSize(xxx.getMaxPoolSize());
executor.setQueueCapacity(xxx.getQueueCapacity());
executor.setThreadNamePrefix("MyAsync-");
executor.initialize();
return executor;
}
}
That is how I call it.
Executor executor = asyncExecutorConfig.getAsyncExecutor();
CompletableFuture.runAsync(() -> {
}, executor);
When I print out the thread name, they all end with MyAsync-1
I set Thread.sleep in one MyAsync-1. The next new thread still shows as MyAsync-1
Did I do something wrong? Why it doesn't give me MyAsync-2, MyAsync-2, etc
Updated:
I tried to print out more details about threads. 10 threads are being created. They all have same thread name MyAsync-1
#Configuration
#EnableAsync
public class MyAsyncServiceExecutorConfig extends AsyncConfigurerSupport {
#Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(0);
executor.setMaxPoolSize(3);
executor.setQueueCapacity(2);
executor.setThreadNamePrefix("MyAsync-");
executor.initialize();
return executor;
}
}
for(int i = 0; i < 10; i++) {
Executor executor = myAsyncServiceExecutorConfig.getAsyncExecutor();
CompletableFuture.runAsync(() -> {
try {
log.info("Thread.currentThread().getName() = " + Thread.currentThread().getName());
Thread.sleep(20000);
} catch (Exception e) {
e.printStackTrace();
}
}, executor);
}
Set<Thread> threadSet = Thread.getAllStackTraces().keySet();
threadSet.stream()
.filter(e -> e.getName().startsWith("MyAsync-"))
.forEach(e -> System.out.println(e.getName() + " id = " + e.getId()));
Below is the result:
...
2023-02-08 14:04:31.107 INFO 7832 --- [ MyAsync-1] c.h.w.controller.MyController : Thread.currentThread().getName() = MyAsync-1
2023-02-08 14:04:31.107 INFO 7832 --- [ MyAsync-1] c.h.w.controller.MyController : Thread.currentThread().getName() = MyAsync-1
2023-02-08 14:04:31.107 INFO 7832 --- [ MyAsync-1] c.h.w.controller.MyController : Thread.currentThread().getName() = MyAsync-1
MyAsync-1 id = 76
MyAsync-1 id = 70
MyAsync-1 id = 69
MyAsync-1 id = 73
MyAsync-1 id = 71
MyAsync-1 id = 77
MyAsync-1 id = 78
MyAsync-1 id = 74
MyAsync-1 id = 72
MyAsync-1 id = 75