问题
Sometimes, when we are stopping the application abruptly exception occurs that unlocking has been failed. Then the same group will never gets the messages. Other groups are getting messages.
I am using the aws kinesis binder snapshot version.
This is the error, when application is stopped.
2018-07-19 22:21:21.371 ERROR 60981 --- [s-shard-locks-1] a.i.k.KinesisMessageDrivenChannelAdapter : Error during unlocking: DynamoDbLock [lockKey=aaaa:myStream:shardId-000000000000,lockedAt=2018-07-19@22:21:11.145, lockItem=null]
org.springframework.dao.DataAccessResourceFailureException: Failed to release lock at aaaa:myStream:shardId-000000000000; nested exception is java.util.concurrent.RejectedExecutionException: Task org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock$$Lambda$421/685035750@7835c79e rejected from java.util.concurrent.ThreadPoolExecutor@650635c5[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1]
at org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock.unlock(DynamoDbLockRegistry.java:538) ~[spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at org.springframework.integration.aws.inbound.kinesis.KinesisMessageDrivenChannelAdapter$ShardConsumerManager.run(KinesisMessageDrivenChannelAdapter.java:1250) ~[spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_172]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_172]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_172]
Caused by: java.util.concurrent.RejectedExecutionException: Task org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock$$Lambda$421/685035750@7835c79e rejected from java.util.concurrent.ThreadPoolExecutor@650635c5[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 1]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063) ~[na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830) [na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379) [na:1.8.0_172]
at org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock.unlock(DynamoDbLockRegistry.java:529) ~[spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
... 6 common frames omitted
Then we start the application, this is the error we get.
2018-07-19 22:15:25.912 INFO 60969 --- [ Thread-3] ConfigServletWebServerApplicationContext : Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@62150f9e: startup date [Thu Jul 19 22:14:26 IST 2018]; root of context hierarchy
2018-07-19 22:15:25.914 INFO 60969 --- [ Thread-3] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@29b40b3: startup date [Thu Jul 19 22:14:33 IST 2018]; parent: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@62150f9e
2018-07-19 22:15:25.924 INFO 60969 --- [b-lock-client-1] c.a.s.d.AmazonDynamoDBLockClient : Heartbeat thread recieved interrupt, exiting run() (possibly exiting thread)
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method) [na:1.8.0_172]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.run(AmazonDynamoDBLockClient.java:955) ~[dynamodb-lock-client-1.0.0.jar:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_172]
2018-07-19 22:15:25.928 INFO 60969 --- [ Thread-3] o.s.c.support.DefaultLifecycleProcessor : Stopping beans in phase 2147482647
2018-07-19 22:15:25.929 INFO 60969 --- [ Thread-3] a.i.k.KinesisMessageDrivenChannelAdapter : stopped KinesisMessageDrivenChannelAdapter{shardOffsets=[KinesisShardOffset{iteratorType=TRIM_HORIZON, sequenceNumber='null', timestamp=null, stream='myStream', shard='shardId-000000000000', reset=false}], consumerGroup='aaaa'}
2018-07-19 22:15:25.930 INFO 60969 --- [ Thread-3] o.s.c.stream.binder.BinderErrorChannel : Channel 'application.myStream.aaaa.errors' has 1 subscriber(s).
2018-07-19 22:15:25.931 INFO 60969 --- [ Thread-3] o.s.c.stream.binder.BinderErrorChannel : Channel 'application.myStream.aaaa.errors' has 0 subscriber(s).
2018-07-19 22:15:25.931 WARN 60969 --- [s-shard-locks-1] c.a.s.d.AmazonDynamoDBLockClient : Could not acquire lock because of a client side failure in talking to DDB
com.amazonaws.AbortedException:
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleInterruptedException(AmazonHttpClient.java:795) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:3452) ~[aws-java-sdk-dynamodb-1.11.336.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:3428) ~[aws-java-sdk-dynamodb-1.11.336.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.executeGetItem(AmazonDynamoDBClient.java:1789) ~[aws-java-sdk-dynamodb-1.11.336.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.getItem(AmazonDynamoDBClient.java:1764) ~[aws-java-sdk-dynamodb-1.11.336.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.readFromDynamoDB(AmazonDynamoDBLockClient.java:997) [dynamodb-lock-client-1.0.0.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.getLockFromDynamoDB(AmazonDynamoDBLockClient.java:743) [dynamodb-lock-client-1.0.0.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.acquireLock(AmazonDynamoDBLockClient.java:402) [dynamodb-lock-client-1.0.0.jar:na]
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBLockClient.tryAcquireLock(AmazonDynamoDBLockClient.java:567) [dynamodb-lock-client-1.0.0.jar:na]
at org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock.doLock(DynamoDbLockRegistry.java:504) [spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock.tryLock(DynamoDbLockRegistry.java:478) [spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at org.springframework.integration.aws.lock.DynamoDbLockRegistry$DynamoDbLock.tryLock(DynamoDbLockRegistry.java:451) [spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at org.springframework.integration.aws.inbound.kinesis.KinesisMessageDrivenChannelAdapter$ShardConsumerManager.lambda$run$0(KinesisMessageDrivenChannelAdapter.java:1198) [spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at java.util.Collection.removeIf(Collection.java:414) ~[na:1.8.0_172]
at org.springframework.integration.aws.inbound.kinesis.KinesisMessageDrivenChannelAdapter$ShardConsumerManager.run(KinesisMessageDrivenChannelAdapter.java:1191) [spring-integration-aws-2.0.0.BUILD-SNAPSHOT.jar:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_172]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_172]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_172]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_172]
Caused by: java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method) ~[na:1.8.0_172]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doPauseBeforeRetry(AmazonHttpClient.java:1671) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.pauseBeforeRetry(AmazonHttpClient.java:1645) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1191) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1058) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:743) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:717) ~[aws-java-sdk-core-1.11.336.jar:na]
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699) ~[aws-java-sdk-core-1.11.336.jar:na]
... 22 common frames omitted
回答1:
I would say that it is normal behavior for any distributed locks implementation: when your thread holding the lock is broken, there is no any hook to unlock on the DB level.
You need to study a leaseDuration property of the AmazonDynamoDBLockClient: https://aws.amazon.com/blogs/database/building-distributed-locks-with-the-dynamodb-lock-client/
Also you show both stack traces in the case of application stop though...
Any chances that you can make a simple project to let us to play with?
UPDATE
The problem has been fixed via: https://github.com/spring-projects/spring-integration-aws/commit/dd52e8f304d20bbdc46d3f9da77e26dd7977f8b7
Thank you again for your good report!
来源：https://stackoverflow.com/questions/51428196/spring-aws-kinesis-binder-acquiring-and-releasing-lock-issues-in-dynamo-db-while