org.springframework.core.task.TaskRejectedException while listening for SQS queue?

问题

I create a basic workflow of consuming messages from SQS with @SqsListener. It works fine but I constantly get tons of similar messages:

org.springframework.core.task.TaskRejectedException: Executor [java.util.concurrent.ThreadPoolExecutor@372b568[Running, pool size = 3, active threads = 3, queued tasks = 0, completed tasks = 0]] did not accept task: org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer$SignalExecutingRunnable@4c30c2f9 at org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor.execute(ThreadPoolTaskExecutor.java:317) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE] at org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer$AsynchronousMessageListener.run(SimpleMessageListenerContainer.java:286) ~[spring-cloud-aws-messaging-2.1.0.RELEASE.jar:2.1.0.RELEASE] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_171] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_171] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_171] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_171] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171] Caused by: java.util.concurrent.RejectedExecutionException: Task org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer$SignalExecutingRunnable@4c30c2f9 rejected from java.util.concurrent.ThreadPoolExecutor@372b568[Running, pool size = 3, active threads = 3, queued tasks = 0, completed tasks = 0] at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063) ~[na:1.8.0_171] at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830) [na:1.8.0_171] at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379) [na:1.8.0_171] at org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor.execute(ThreadPoolTaskExecutor.java:314) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE] ... 6 common frames omitted

My configuration bean:

@EnableSqs
@Configuration
public class AmazonSqsConfiguration {

    @Value("${aws.sqs.accessKey}")
    private String accessKey;

    @Value("${aws.sqs.secretKey}")
    private String secretKey;

    @Value("${aws.sqs.region}")
    private String region;

    @Value("${aws.sqs.url}")
    private String url;

    @Bean
    public AmazonSQSAsync amazonSqs() {
        AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);
        AWSStaticCredentialsProvider credentialsProvider = new AWSStaticCredentialsProvider(credentials);
        return AmazonSQSAsyncClientBuilder.standard()
                .withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(url, region))
                .withCredentials(credentialsProvider)
                .build();
    }

}

My consumer is the following:

@SqsListener(value = "my-queue", deletionPolicy = SqsMessageDeletionPolicy.ON_SUCCESS)
    public void processSubscription(String xmlNotification) {/* Message processor */}

Is it possible to remove them by re configuring @Bean? What is the root cause of the issue and how to fight with it?

I tried to find solution by natural search and encountered with the following answer. It doesn't work for me, since I don't have JMS. I couldn't debug because I don't even know what to debug.

回答1:

I found ticket for spring-cloud-aws related to the behavior I encountered. I also, find relevant StackOverflow question.

Therefore, solution that worked for me was the following:

@Bean
public SimpleMessageListenerContainerFactory simpleMessageListenerContainerFactory(AmazonSQSAsync amazonSQS) {
    SimpleMessageListenerContainerFactory factory = new SimpleMessageListenerContainerFactory();
    factory.setAmazonSqs(amazonSQS);
    factory.setMaxNumberOfMessages(10);
    factory.setAutoStartup(true);
    factory.setWaitTimeOut(20);

    return factory;
}

来源：https://stackoverflow.com/questions/55216527/org-springframework-core-task-taskrejectedexception-while-listening-for-sqs-queu