【Flink】Flink LocalTransportException Sending the partition request to ‘null‘ failed

【Flink】Flink LocalTransportException Sending the partition request to ‘null‘ failed

1.概述

一个环境并行度为1不会报错，但是并行度超过1 就会报错如下

Caused by: org.apache.flink.runtime.io.network.netty.exception.LocalTransportException: Sending the partition request