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Posted to issues@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2020/12/04 09:24:00 UTC
[jira] [Closed] (FLINK-20481) java.lang.ClassCastException:
java.lang.Long cannot be cast to java.lang.Integer
[ https://issues.apache.org/jira/browse/FLINK-20481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jark Wu closed FLINK-20481.
---------------------------
Resolution: Duplicate
> java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer
> --------------------------------------------------------------------------------
>
> Key: FLINK-20481
> URL: https://issues.apache.org/jira/browse/FLINK-20481
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC, Table SQL / Ecosystem
> Affects Versions: 1.12.0
> Reporter: zhisheng
> Priority: Major
> Attachments: image-2020-12-04-15-24-08-732.png, image-2020-12-04-15-26-49-307.png
>
>
> MySQL table sql :
> {code:java}
> DROP TABLE IF EXISTS `yarn_app_logs_count`;
> CREATE TABLE `yarn_app_logs_count` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `app_id` varchar(50) DEFAULT NULL, `count` bigint(11) DEFAULT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;
> INSERT INTO `yarn_app_logs_count` (`id`, `app_id`, `count`)VALUES (1,'application_1575453055442_3188',2);
> {code}
> Flink SQL DDL and SQL：
> {code:java}
> CREATE TABLE yarn_app_logs_count (
> id INT,
> app_id STRING,
> `count` BIGINT
> ) WITH (
> 'connector' = 'jdbc',
> 'url' = 'jdbc:mysql://localhost:3306/zhisheng',
> 'table-name' = 'yarn_app_logs_count',
> 'username' = 'root',
> 'password' = '123456'
> );
> select * from yarn_app_logs_count;
> {code}
>
> if id type is INT, it has an exception:
> {code:java}
> 2020-12-04 15:15:23org.apache.flink.runtime.JobException: Recovery is suppressed by NoRestartBackoffTimeStrategy at org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:116) at org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:78) at org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:224) at org.apache.flink.runtime.scheduler.DefaultScheduler.maybeHandleTaskFailure(DefaultScheduler.java:217) at org.apache.flink.runtime.scheduler.DefaultScheduler.updateTaskExecutionStateInternal(DefaultScheduler.java:208) at org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:533) at org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:89) at org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:419) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:286) at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:201) at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74) at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:154) at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26) at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21) at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123) at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21) at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:170) at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) at akka.actor.Actor$class.aroundReceive(Actor.scala:517) at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592) at akka.actor.ActorCell.invoke(ActorCell.scala:561) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258) at akka.dispatch.Mailbox.run(Mailbox.scala:225) at akka.dispatch.Mailbox.exec(Mailbox.scala:235) at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer at org.apache.flink.table.data.GenericRowData.getInt(GenericRowData.java:149) at org.apache.flink.table.data.RowData.lambda$createFieldGetter$245ca7d1$6(RowData.java:267) at org.apache.flink.table.data.RowData.lambda$createFieldGetter$25774257$1(RowData.java:317) at org.apache.flink.table.runtime.typeutils.RowDataSerializer.copyRowData(RowDataSerializer.java:166) at org.apache.flink.table.runtime.typeutils.RowDataSerializer.copy(RowDataSerializer.java:129) at org.apache.flink.table.runtime.typeutils.RowDataSerializer.copy(RowDataSerializer.java:50) at org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:69) at org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:46) at org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:26) at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) at org.apache.flink.streaming.api.operators.StreamSourceContexts$ManualWatermarkContext.processAndCollect(StreamSourceContexts.java:305) at org.apache.flink.streaming.api.operators.StreamSourceContexts$WatermarkContext.collect(StreamSourceContexts.java:394) at org.apache.flink.streaming.api.functions.source.InputFormatSourceFunction.run(InputFormatSourceFunction.java:93) at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100) at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63) at org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:215)
> {code}
>
> !image-2020-12-04-15-24-08-732.png!
> when i set id type is BIGINT, it works well. but My MySQL table id is define INT, i see the Data Type Mapping ([https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/table/connectors/jdbc.html#data-type-mapping)|https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/table/connectors/jdbc.html#data-type-mapping),]
> !image-2020-12-04-15-26-49-307.png|width=622,height=421!
>
>
>
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