Flink实战问题（一）：Unable to create a sink for writing table

最新推荐文章于 2022-06-02 18:23:40 发布

原创最新推荐文章于 2022-06-02 18:23:40 发布 · 7k 阅读

1 ·

CC 4.0 BY-SA版权

文章标签：

#flink #java

Flink入门专栏收录该内容

21 篇文章

订阅专栏

本文记录了使用Flink连接Kafka时遇到的sink写入问题及解决过程。错误提示无法创建sink写入指定的Kafka表，通过检查发现是由于自定义的'value.format'配置未正确打包导致。

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]