我有一个使用 dynamo db 客户端的应用程序，这似乎在大多数情况下都可以正常工作，但我正在编写集成测试并收到此错误，首先它插入正常，然后第二次我去插入时我得到这个错误。
Exception in thread "Thread-15" java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@6145f3ae rejected from java.util.concurrent.ScheduledThreadPoolExecutor@380892d7[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:326)
at java.util.concurrent.ScheduledThreadPoolExecutor.schedule(ScheduledThreadPoolExecutor.java:533)
at com.amazonaws.http.timers.request.HttpRequestTimer.startTimer(HttpRequestTimer.java:61)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1253)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1072)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:745)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:669)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:651)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:515)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:3768)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:3737)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.executePutItem(AmazonDynamoDBClient.java:2419)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.putItem(AmazonDynamoDBClient.java:2387)
at com.lmig.global.reuse.event.framework.attestation.Attestation.createEntry(Attestation.java:49)
at com.lmig.global.reuse.event.framework.subscriber.Subscriber.process(Subscriber.java:86)
at com.lmig.global.reuse.event.framework.subscriber.aws.AwsSubscriber.start(AwsSubscriber.java:88)
at com.lmig.global.reuse.event.framework.subscriber.SubscriberFactory.lambda$loadAwsSubscribers$0(SubscriberFactory.java:64)
at java.lang.Thread.run(Thread.java:748)
像这样插入
amazonDynamoDB.putItem(itemRequest);
谢谢
更新 - 当添加尝试捕获并打印我得到的堆栈跟踪时
Exception in thread "Thread-15" com.amazonaws.SdkClientException: Unable to execute HTTP request: The target server failed to respond
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleRetryableException(AmazonHttpClient.java:1134)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1080)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:745)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:669)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:651)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:515)
at com.amazonaws.services.sqs.AmazonSQSClient.doInvoke(AmazonSQSClient.java:2147)
at com.amazonaws.services.sqs.AmazonSQSClient.invoke(AmazonSQSClient.java:2116)
at com.amazonaws.services.sqs.AmazonSQSClient.invoke(AmazonSQSClient.java:2105)
at com.amazonaws.services.sqs.AmazonSQSClient.executeReceiveMessage(AmazonSQSClient.java:1559)
at com.amazonaws.services.sqs.AmazonSQSClient.receiveMessage(AmazonSQSClient.java:1530)
at com.lmig.global.reuse.event.framework.subscriber.aws.AwsSubscriber.start(AwsSubscriber.java:70)
at com.lmig.global.reuse.event.framework.subscriber.SubscriberFactory.lambda$loadAwsSubscribers$0(SubscriberFactory.java:64)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.http.NoHttpResponseException: The target server failed to respond
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:141)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
at com.amazonaws.http.protocol.SdkHttpRequestExecutor.doReceiveResponse(SdkHttpRequestExecutor.java:82)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at com.amazonaws.http.apache.client.impl.SdkHttpClient.execute(SdkHttpClient.java:72)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1256)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1072)
... 14 more
2020-05-25 16:50:10.462 INFO 5530 --- [ Thread-16] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2020-05-25 16:50:10.463 INFO 5530 --- [ Thread-16] .SchemaDropperImpl$DelayedDropActionImpl : HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down'
2020-05-25 16:50:10.471 INFO 5530 --- [ Thread-16] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2020-05-25 16:50:10.475 INFO 5530 --- [ Thread-16] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
Exception in thread "Thread-15" com.amazonaws.SdkClientException: Unable to execute HTTP request: The target server failed to respond
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleRetryableException(AmazonHttpClient.java:1134)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1080)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:745)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:669)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:651)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:515)
at com.amazonaws.services.sqs.AmazonSQSClient.doInvoke(AmazonSQSClient.java:2147)
at com.amazonaws.services.sqs.AmazonSQSClient.invoke(AmazonSQSClient.java:2116)
at com.amazonaws.services.sqs.AmazonSQSClient.invoke(AmazonSQSClient.java:2105)
at com.amazonaws.services.sqs.AmazonSQSClient.executeReceiveMessage(AmazonSQSClient.java:1559)
at com.amazonaws.services.sqs.AmazonSQSClient.receiveMessage(AmazonSQSClient.java:1530)
at com.lmig.global.reuse.event.framework.subscriber.aws.AwsSubscriber.start(AwsSubscriber.java:70)
at com.lmig.global.reuse.event.framework.subscriber.SubscriberFactory.lambda$loadAwsSubscribers$0(SubscriberFactory.java:64)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.http.NoHttpResponseException: The target server failed to respond
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:141)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
at com.amazonaws.http.protocol.SdkHttpRequestExecutor.doReceiveResponse(SdkHttpRequestExecutor.java:82)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at com.amazonaws.http.apache.client.impl.SdkHttpClient.execute(SdkHttpClient.java:72)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1256)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1072)
... 14 more
2020-05-25 16:50:10.462 INFO 5530 --- [ Thread-16] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2020-05-25 16:50:10.463 INFO 5530 --- [ Thread-16] .SchemaDropperImpl$DelayedDropActionImpl : HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down'
2020-05-25 16:50:10.471 INFO 5530 --- [ Thread-16] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2020-05-25 16:50:10.475 INFO 5530 --- [ Thread-16] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
以下定义来自 AWS 站点：
写入容量单位 (WCU(：将数据写入表的每个 API 调用都是一个写入请求。对于大小不超过 1 KB 的项目，一个 WCU 每秒可以执行一个标准写入请求。大于 1 KB 的项目需要额外的 WCU。事务性写入请求需要两个 WCU 每秒对最大 1 KB 的项目执行一次写入。例如，1 KB 项目的标准写入请求需要一个 WCU，3 KB 项目的标准写入请求需要三个 WCU，3 KB 项目的事务性写入请求需要六个 WCU。