Question

嗨，我正在代码中实现dynamoDb锁定。我有一个包含2个ID的方法，并基于2个ID在dynamoDb的表中创建了几个条目。我已经实现了以下代码（样本代码）：

Class Test {

public void testLocking() {

String pid;
String pid2;

//creating the lock and then using it as :

AcquireLockOptions optionsMain = AcquireLockOptions.builder(pid).build();
Optional<LockItem> lockItemMain = Optional.empty();
try {
 lockItemMain = lockClient.tryAcquireLock(optionsMain);
 if (lockItemMain.isPresent()) {

 // do some operation and store the object in dynamodb:

   dynamoDBMapper.save();

   } catch (LockNotGrantedException e) {
    //logging.
   }
   finally {
      if (lockItemMain.isPresent()) {
       logger.debug("Releasing the lock 1 :: ");
       boolean status = lockClient.releaseLock(lockItemMain.get());
       logger.info(LOCK_STATUS_STRING, status);
      }
    }
  }

AcquireLockOptions optionsTemp = AcquireLockOptions.builder(pid2).build();
Optional<LockItem> lockItemTemp = Optional.empty();
try {
lockItemTemp = lockClient.tryAcquireLock(optionsTemp);
if (lockItemTemp.isPresent()) {

// do some operation and store the object in dynamodb:

dynamoDBMapper.save();

} catch (LockNotGrantedException e) {
 //logging.
}
finally {
      if (lockItemTemp.isPresent()) {
        logger.debug("Releasing the lock 2 :: ");
        boolean status = lockClient.releaseLock(lockItemTemp.get());
        logger.info(LOCK_STATUS_STRING, status);
       }
      }
     }    
    }
   }

运行此代码后，我可以看到第一个锁已成功释放，并且该锁的条目已从锁表中删除。但是，当要释放第二个锁时，它会失败并显示以下异常：

com.amazonaws.AbortedException：在com.amazonaws.internal.SdkFilterInputStream.abortIfNeeded（SdkFilterInputStream.java:53）〜[application.jar :?] 在com.amazonaws.internal.SdkFilterInputStream.markSupported（SdkFilterInputStream.java:117）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeHelper（AmazonHttpClient.java:1026）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.doExecute（AmazonHttpClient.java:745）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.executeWithTimer（AmazonHttpClient.java:719）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.execute（AmazonHttpClient.java:701）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient $ RequestExecutor.access $ 500（AmazonHttpClient.java:669）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient $ RequestExecutionBuilderImpl.execute（AmazonHttpClient.java:651）〜[application.jar :?] 在com.amazonaws.http.AmazonHttpClient.execute（AmazonHttpClient.java:515）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke（AmazonDynamoDBClient.java:3609）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke（AmazonDynamoDBClient.java:3578）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke（AmazonDynamoDBClient.java:3567）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.executeDeleteItem（AmazonDynamoDBClient.java:1161）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.deleteItem（AmazonDynamoDBClient.java:1132）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.releaseLock（AmazonDynamoDBLockClient.java:631）〜[application.jar :?] 在com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.releaseLock（AmazonDynamoDBLockClient.java:581）〜[application.jar：？]

无法找出原因。任何线索将不胜感激！谢谢。

com.amazonaws.AbortedException，同时释放dynamoDB锁定

0 个答案: