在flink-1.17中测试执行流处理版本的单词计数程序时，出现"Exception in thread "Thread-5" java.lang.IllegalStateException: T

场景描述

采用 单作业模式提交作业后发现报错了

 报错内容

Exception in thread “Thread-5” java.lang.IllegalStateException: Trying to access closed classloader. Please check if you store classloaders directly or indirectly in static fields. If the stacktrace suggests that the leak occurs in a third party library and cannot be fixed immediately, you can disable this check with the configuration ‘classloader.check-leaked-classloader’.
at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders

解决方式

flink-conf.yaml配置文件中增加如下设置

[hui@hadoop101 flink-1.17]$ vim conf/flink-conf.yaml 
classloader.check-leaked-classloader: false

再次提交作业正常了；