Exception in thread “Thread-6“ java.lang.IllegalStateException: Trying to access closed classloader.

目录

报错信息

解决办法

解释

地址：https://issues.apache.org/jira/browse/FLINK-19916

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报错信息

Exception in thread “Thread-6” 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’.

Exception in thread "Thread-6" 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$SafetyNetWrapperClassLoader.ensureInner(FlinkUserCodeClassLoaders.java:164)
        at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$SafetyNetWrapperClassLoader.getResource(FlinkUserCodeClassLoaders.java:183)
        at org.apache.hadoop.conf.Configuration.getResource(Configuration.java:2780)
        at org.apache.hadoop.conf.Configuration.getStreamReader(Configuration.java:3036)
        at org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:2995)
        at org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:2968)
        at org.apache.hadoop.conf.Configuration.getProps(Configuration.java:2848)
        at org.apache.hadoop.conf.Configuration.get(Configuration.java:1200)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1812)
        at org.apache.hadoop.conf.Configuration.getTimeDuration(Configuration.java:1789)
        at org.apache.hadoop.util.ShutdownHookManager.getShutdownTimeout(ShutdownHookManager.java:183)
        at org.apache.hadoop.util.ShutdownHookManager.shutdownExecutor(ShutdownHookManager.java:145)
        at org.apache.hadoop.util.ShutdownHookManager.access$300(ShutdownHookManager.java:65)
        at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:102)

解决办法

在 flink 配置文件里 flink-conf.yaml设置
classloader.check-leaked-classloader: false

解释

这是一个hadoop3版本和flink导致的一个bug

you can disable this check with the configuration ‘classloader.check-leaked-classloader’.

根据提示，禁用classloader.check-leaked-classloader

地址：https://issues.apache.org/jira/browse/FLINK-19916