这个应该是 `kudu-client.jar` 里面应该打进去的吧。 可以看下 jar -tf kudu-client.jar | grep 'com.stumbleupon.async.Callback' ps: 你的 close 方法有 npe，应该是 客户端还没构建出来，可以判空下。
Best, Hailong 在 2020-12-30 17:24:48，"superainbower" <superainbo...@163.com> 写道： >HI，大家好： >我有一个应用场景，利用Flinksql读取Kafka数据写入Kudu，由于官方没有Kudu Connector，自定义了一个Kudu Sink >Connector，在本地IDEA下测试可以 正常跑通； >可是将代码打包，并将kudu-client.jar的依赖包放置Flink的lib目录下之后，提交任务到集群报错如下： > > >java.lang.NoClassDefFoundError: com/stumbleupon/async/Callback > at > org.apache.kudu.client.AsyncKuduClient$AsyncKuduClientBuilder.build(AsyncKuduClient.java:2525) > ~[kudu-client-1.9.0.jar:1.9.0] > at > org.apache.kudu.client.KuduClient$KuduClientBuilder.build(KuduClient.java:533) > ~[kudu-client-1.9.0.jar:1.9.0] > at > com.java.flink.sql.kudu.KuduSinkFunction.open(KuduSinkFunction.java:38) > ~[FlinkProject.jar:?] > at > org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.table.runtime.operators.sink.SinkOperator.open(SinkOperator.java:63) > ~[flink-table-blink_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:401) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$2(StreamTask.java:507) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:92) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:501) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:531) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:722) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:547) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_162] > Suppressed: java.lang.NullPointerException > at > com.java.flink.sql.kudu.KuduSinkFunction.close(KuduSinkFunction.java:86) > ~[FlinkProject.jar:?] > at > org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:117) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:740) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.runAndSuppressThrowable(StreamTask.java:720) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.cleanUpInvoke(StreamTask.java:643) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:552) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at > org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:722) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:547) > ~[flink-dist_2.11-1.12.0.jar:1.12.0] > at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_162] >Caused by: java.lang.ClassNotFoundException: com.stumbleupon.async.Callback > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > ~[?:1.8.0_162] > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_162] > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) > ~[?:1.8.0_162] > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_162] > ... 14 more > > >不是很清楚这个 com.stumbleupon.async.Callback 类的依赖来自哪里，该怎么解决？ >| | >superainbower >| >| >superainbo...@163.com >| >签名由网易邮箱大师定制 >
