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一、背景
采用maven的插件maven-shade-plugin打包时把代码和引用jar都打包一起，然后运行时正常，maven-shade-plugin插件打包出jar太大了，采用maven-jar-plugin打包分离jar和代码，运行起来出现下面错误
二、错误
Unable to create a sink for writing table
'default_catalog.default_database.kafka_test'. Table options are:
'connector'='kafka' 'key.fields'='id' 'key.format'='json'
'properties.bootstrap.servers'='127.0.0.1:9092'
'scan.startup.mode'='latest-offset' 'topic'='test' 'value.format'='my-json'
2021-12-18 17:33:03,648 WARN
org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap
[] - Application failed unexpectedly: java.util.concurrent.CompletionException:
org.apache.flink.client.deployment.application.ApplicationExecutionException:
The application contains no execute() calls. at
java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:943)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
~[?:1.8.0_151] at
org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.runApplicationEntryPoint(ApplicationDispatcherBootstrap.java:250)
~[flink-clients_2.12-1.13.2.jar:1.13.2] at
org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.lambda$runApplicationAsync$1(ApplicationDispatcherBootstrap.java:212)
~[flink-clients_2.12-1.13.2.jar:1.13.2] at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[?:1.8.0_151] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[?:1.8.0_151] at
org.apache.flink.runtime.concurrent.akka.ActorSystemScheduledExecutorAdapter$ScheduledFutureTask.run(ActorSystemScheduledExecutorAdapter.java:159)
[flink-runtime_2.12-1.13.2.jar:1.13.2] at
akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:44)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
[akka-actor_2.12-2.5.21.jar:2.5.21] Caused by:
org.apache.flink.client.deployment.application.ApplicationExecutionException:
The application contains no execute() calls. ... 11 more 2021-12-18
17:33:03,655 ERROR org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] -
Fatal error occurred in the cluster entrypoint.
org.apache.flink.util.FlinkException: Application failed unexpectedly. at
org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.lambda$runApplicationAndShutdownClusterAsync$0(ApplicationDispatcherBootstrap.java:170)
~[flink-clients_2.12-1.13.2.jar:1.13.2] at
java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:822)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:797)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
~[?:1.8.0_151] at
org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.runApplicationEntryPoint(ApplicationDispatcherBootstrap.java:250)
~[flink-clients_2.12-1.13.2.jar:1.13.2] at
org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.lambda$runApplicationAsync$1(ApplicationDispatcherBootstrap.java:212)
~[flink-clients_2.12-1.13.2.jar:1.13.2] at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[?:1.8.0_151] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[?:1.8.0_151] at
org.apache.flink.runtime.concurrent.akka.ActorSystemScheduledExecutorAdapter$ScheduledFutureTask.run(ActorSystemScheduledExecutorAdapter.java:159)
[flink-runtime_2.12-1.13.2.jar:1.13.2] at
akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:44)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
[akka-actor_2.12-2.5.21.jar:2.5.21] at
akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
[akka-actor_2.12-2.5.21.jar:2.5.21] Caused by:
java.util.concurrent.CompletionException:
org.apache.flink.client.deployment.application.ApplicationExecutionException:
The application contains no execute() calls. at
java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:943)
~[?:1.8.0_151] at
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
~[?:1.8.0_151]
三、分析错误
错误提示Unable to create a sink for writing table
'default_catalog.default_database.kafka_test'.
说明是不能写入，原先以为是缺少kafka的jar，这边没提示缺少jar
接下去提示Table options
are，我怀疑是里面参数有什么问题，我参数一个一个对比过去，发现'value.format'='my-json'这个参数，是我自己代码构建的，所以发现注册的这个配置没打包上来
所以我重新打包上来就正常。
总结：提示的错误不是很明显，排查比较久，还是慢慢分析，还是能发现问题