[FLINK-22247] can not pass AddressList when connecting to rabbitmq

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.12.2
• Component/s: API / DataStream
• Labels: auto-deprioritized-major auto-deprioritized-minor

Environment

flink: 1.12.2

rabbitmq: 3.8.4

• Assignee: Unassigned
• Reporter: Spongebob
• Created: 13/Apr/21 04:13
• Updated: 28/Jan/23 10:27

Description

We hope to connect to rabbitmq cluster address when using rabbitmq connector, So we override the setupConnection function to pass the rabbitmq cluster address, but the address class is not serializable thereby flink throws exception.

//代码占位符
val rabbitmqAddresses = Array(
  new Address("xxx1", 5672),
  new Address("xxx2", 5672),
  new Address("xxx3", 5672))

val dataStream = streamEnv
  .addSource(new RMQSource[String](
    rabbitmqConfig, // rabbitmq's connection config
    "queueName", // queue name
    true, // using correlation ids, assurance of exactly-once consume from rabbitmq
    new SimpleStringSchema // java deserialization
  ) {
    override def setupQueue(): Unit = {}

    override def setupConnection(): Connection = {
      rabbitmqConfig.getConnectionFactory.newConnection(rabbitmqAddresses)
    }
  }).setParallelism(1)

Exception in thread "main" org.apache.flink.api.common.InvalidProgramException: [Lcom.rabbitmq.client.Address;@436a4e4b is not serializable. The object probably contains or references non serializable fields.Exception in thread "main" org.apache.flink.api.common.InvalidProgramException: [Lcom.rabbitmq.client.Address;@436a4e4b is not serializable. The object probably contains or references non serializable fields. at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:164) at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:132) at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:69) at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.clean(StreamExecutionEnvironment.java:2000) at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.addSource(StreamExecutionEnvironment.java:1685) at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.addSource(StreamExecutionEnvironment.java:1668) at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.addSource(StreamExecutionEnvironment.java:1652) at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.addSource(StreamExecutionEnvironment.scala:693) at testConsumer$.main(testConsumer.scala:30) at testConsumer.main(testConsumer.scala)Caused by: java.io.NotSerializableException: com.rabbitmq.client.Address at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184) at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348) at org.apache.flink.util.InstantiationUtil.serializeObject(InstantiationUtil.java:624) at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:143) ... 9 more