18772247265 commented on issue #1635:
URL: https://github.com/apache/fluss/issues/1635#issuecomment-3256715747

   > [@18772247265](https://github.com/18772247265) Hi, thanks for reporting 
this issue. But I'm sorry for I can't reproduce this issue in my local. Could 
you please show the detail exception with root cause? You can see the full 
exception message in `FLINK_HOME/log` or `SET 'sql-client.verbose' = 'true'` in 
sql client, and then fire the sql to see the full exception message.
   
   `2025-09-05 01:10:32,037 INFO  
org.apache.flink.client.program.rest.RestClusterClient       [] - Successfully 
submitted job 'SELECT `fluss_t_ds_project`.`id`, `fluss_t_ds_project`.`name`, 
`fluss_t_ds_project`.`code`, `fluss_t_ds_project`.`description`, 
`fluss_t_ds_project`.`user_id`, `fluss_t_ds_project`.`flag`, 
`fluss_t_ds_project`.`create_time`, `fluss_t_ds_project`.`update_time`, 
`fluss_t_ds_project`.`display_name`
   FROM `fluss_catalog`.`fluss`.`fluss_t_ds_project` AS `fluss_t_ds_project`
   ORDER BY `id`
   FETCH NEXT 2 ROWS ONLY' (fec7854c56a8dc07f0de552a553dc559) to 
'http://localhost:7807'.
   2025-09-05 01:10:35,115 ERROR 
org.apache.flink.table.gateway.service.SqlGatewayServiceImpl [] - Failed to 
fetchResults.
   org.apache.flink.table.gateway.service.utils.SqlExecutionException: Error 
while retrieving result.
           at 
org.apache.flink.table.gateway.service.result.ResultStore$ResultRetrievalThread.run(ResultStore.java:159)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
   Caused by: java.lang.RuntimeException: Failed to fetch next result
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:129)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:100)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.planner.connectors.CollectDynamicSink$CloseableRowIteratorWrapper.hasNext(CollectDynamicSink.java:247)
 ~[?:?]
           at 
org.apache.flink.table.gateway.service.result.ResultStore$ResultRetrievalThread.run(ResultStore.java:155)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
   Caused by: java.io.IOException: Failed to fetch job execution result
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.getAccumulatorResults(CollectResultFetcher.java:187)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.next(CollectResultFetcher.java:123)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:126)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:100)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.planner.connectors.CollectDynamicSink$CloseableRowIteratorWrapper.hasNext(CollectDynamicSink.java:247)
 ~[?:?]
           at 
org.apache.flink.table.gateway.service.result.ResultStore$ResultRetrievalThread.run(ResultStore.java:155)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
   Caused by: java.util.concurrent.ExecutionException: 
org.apache.flink.client.program.ProgramInvocationException: Job failed (JobID: 
fec7854c56a8dc07f0de552a553dc559)
           at 
java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) 
~[?:1.8.0_181]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.getAccumulatorResults(CollectResultFetcher.java:185)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.next(CollectResultFetcher.java:123)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:126)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:100)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.planner.connectors.CollectDynamicSink$CloseableRowIteratorWrapper.hasNext(CollectDynamicSink.java:247)
 ~[?:?]
           at 
org.apache.flink.table.gateway.service.result.ResultStore$ResultRetrievalThread.run(ResultStore.java:155)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
   Caused by: org.apache.flink.client.program.ProgramInvocationException: Job 
failed (JobID: fec7854c56a8dc07f0de552a553dc559)
           at 
org.apache.flink.client.deployment.ClusterClientJobClientAdapter.lambda$null$6(ClusterClientJobClientAdapter.java:130)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) 
~[?:1.8.0_181]
           at 
org.apache.flink.util.concurrent.FutureUtils.lambda$retryOperationWithDelay$6(FutureUtils.java:302)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) 
~[?:1.8.0_181]
           at 
org.apache.flink.client.program.rest.RestClusterClient.lambda$pollResourceAsync$35(RestClusterClient.java:901)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) 
~[?:1.8.0_181]
           at 
org.apache.flink.util.concurrent.FutureUtils.lambda$retryOperationWithDelay$6(FutureUtils.java:302)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:561) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:929)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
~[?:1.8.0_181]
           at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
   Caused by: org.apache.flink.runtime.client.JobExecutionException: Job 
execution failed.
           at 
org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:144)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.client.deployment.ClusterClientJobClientAdapter.lambda$null$6(ClusterClientJobClientAdapter.java:128)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) 
~[?:1.8.0_181]
           at 
org.apache.flink.util.concurrent.FutureUtils.lambda$retryOperationWithDelay$6(FutureUtils.java:302)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) 
~[?:1.8.0_181]
           at 
org.apache.flink.client.program.rest.RestClusterClient.lambda$pollResourceAsync$35(RestClusterClient.java:901)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962) 
~[?:1.8.0_181]
           at 
org.apache.flink.util.concurrent.FutureUtils.lambda$retryOperationWithDelay$6(FutureUtils.java:302)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:561) 
~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:929)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
 ~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
~[?:1.8.0_181]
           at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_181]
   Caused by: org.apache.flink.runtime.JobException: Recovery is suppressed by 
NoRestartBackoffTimeStrategy
           at 
org.apache.flink.runtime.executiongraph.failover.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:219)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.executiongraph.failover.ExecutionFailureHandler.handleFailureAndReport(ExecutionFailureHandler.java:166)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.executiongraph.failover.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:121)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.DefaultScheduler.recordTaskFailure(DefaultScheduler.java:281)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:272)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.adaptivebatch.AdaptiveBatchScheduler.handleTaskFailure(AdaptiveBatchScheduler.java:413)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.DefaultScheduler.onTaskFailed(DefaultScheduler.java:265)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.adaptivebatch.AdaptiveBatchScheduler.onTaskFailed(AdaptiveBatchScheduler.java:405)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.SchedulerBase.onTaskExecutionStateUpdate(SchedulerBase.java:787)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:764)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:83)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:515)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source) 
~[?:?]
           at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[?:1.8.0_181]
           at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]
           at 
org.apache.flink.runtime.rpc.pekko.PekkoRpcActor.lambda$handleRpcInvocation$1(PekkoRpcActor.java:318)
 ~[?:?]
           at 
org.apache.flink.runtime.concurrent.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:83)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rpc.pekko.PekkoRpcActor.handleRpcInvocation(PekkoRpcActor.java:316)
 ~[?:?]
           at 
org.apache.flink.runtime.rpc.pekko.PekkoRpcActor.handleRpcMessage(PekkoRpcActor.java:229)
 ~[?:?]
           at 
org.apache.flink.runtime.rpc.pekko.FencedPekkoRpcActor.handleRpcMessage(FencedPekkoRpcActor.java:88)
 ~[?:?]
           at 
org.apache.flink.runtime.rpc.pekko.PekkoRpcActor.handleMessage(PekkoRpcActor.java:174)
 ~[?:?]
           at 
org.apache.pekko.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:33) ~[?:?]
           at 
org.apache.pekko.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:29) ~[?:?]
           at scala.PartialFunction.applyOrElse(PartialFunction.scala:127) 
~[flink-scala_2.12-1.20.1.jar:1.20.1]
           at scala.PartialFunction.applyOrElse$(PartialFunction.scala:126) 
~[flink-scala_2.12-1.20.1.jar:1.20.1]
           at 
org.apache.pekko.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:29) 
~[?:?]
           at 
scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:175) 
~[flink-scala_2.12-1.20.1.jar:1.20.1]
           at 
scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:176) 
~[flink-scala_2.12-1.20.1.jar:1.20.1]
           at 
scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:176) 
~[flink-scala_2.12-1.20.1.jar:1.20.1]
           at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547) ~[?:?]
           at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:545) 
~[?:?]
           at 
org.apache.pekko.actor.AbstractActor.aroundReceive(AbstractActor.scala:229) 
~[?:?]
           at 
org.apache.pekko.actor.ActorCell.receiveMessage(ActorCell.scala:590) ~[?:?]
           at org.apache.pekko.actor.ActorCell.invoke(ActorCell.scala:557) 
~[?:?]
           at 
org.apache.pekko.dispatch.Mailbox.processMailbox(Mailbox.scala:272) ~[?:?]
           at org.apache.pekko.dispatch.Mailbox.run(Mailbox.scala:233) ~[?:?]
           at org.apache.pekko.dispatch.Mailbox.exec(Mailbox.scala:245) ~[?:?]
           at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) 
~[?:1.8.0_181]
   Caused by: java.lang.RuntimeException: One or more fetchers have encountered 
exception
           at 
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcherManager.checkErrors(SplitFetcherManager.java:333)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
org.apache.flink.connector.base.source.reader.SourceReaderBase.getNextFetch(SourceReaderBase.java:228)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
org.apache.flink.connector.base.source.reader.SourceReaderBase.pollNext(SourceReaderBase.java:190)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.SourceOperator.emitNext(SourceOperator.java:443)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.runtime.io.StreamTaskSourceInput.emitNext(StreamTaskSourceInput.java:68)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:65)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:638)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:231)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:973)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:917) 
~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:970)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:949) 
~[flink-dist-1.20.1.jar:1.20.1]
           at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:763) 
~[flink-dist-1.20.1.jar:1.20.1]
           at org.apache.flink.runtime.taskmanager.Task.run(Task.java:575) 
~[flink-dist-1.20.1.jar:1.20.1]
           at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_181]
   Caused by: java.lang.RuntimeException: SplitFetcher thread 0 received 
unexpected exception while polling the records
           at 
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:168)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.run(SplitFetcher.java:117)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[?:1.8.0_181]
           at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
~[?:1.8.0_181]
           at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_181]
   Caused by: java.lang.ClassCastException: 
org.apache.paimon.privilege.PrivilegedFileStore cannot be cast to 
org.apache.paimon.KeyValueFileStore
           at 
com.alibaba.fluss.flink.lakehouse.paimon.reader.PaimonSnapshotAndLogSplitScanner.<init>(PaimonSnapshotAndLogSplitScanner.java:86)
 ~[fluss-flink-1.20-0.7.0.jar:0.7.0]
           at 
com.alibaba.fluss.flink.lakehouse.LakeSplitReaderGenerator.getBoundedSplitScanner(LakeSplitReaderGenerator.java:93)
 ~[fluss-flink-1.20-0.7.0.jar:0.7.0]
           at 
com.alibaba.fluss.flink.source.reader.FlinkSourceSplitReader.checkSnapshotSplitOrStartNext(FlinkSourceSplitReader.java:380)
 ~[fluss-flink-1.20-0.7.0.jar:0.7.0]
           at 
com.alibaba.fluss.flink.source.reader.FlinkSourceSplitReader.fetch(FlinkSourceSplitReader.java:142)
 ~[fluss-flink-1.20-0.7.0.jar:0.7.0]
           at 
org.apache.flink.connector.base.source.reader.fetcher.FetchTask.run(FetchTask.java:58)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:165)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.run(SplitFetcher.java:117)
 ~[flink-connector-base-1.20.1.jar:1.20.1]
           at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[?:1.8.0_181]
           at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
~[?:1.8.0_181]
           at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
~[?:1.8.0_181]
           at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_181]
   2025-09-05 01:10:35,156 ERROR 
org.apache.flink.table.gateway.rest.handler.statement.FetchResultsHandler [] - 
Unhandled exception.
   org.apache.flink.table.gateway.api.utils.SqlGatewayException: 
org.apache.flink.table.gateway.api.utils.SqlGatewayException: Failed to 
fetchResults.
           at 
org.apache.flink.table.gateway.rest.handler.statement.FetchResultsHandler.handleRequest(FetchResultsHandler.java:91)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.gateway.rest.handler.AbstractSqlGatewayRestHandler.respondToRequest(AbstractSqlGatewayRestHandler.java:84)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.gateway.rest.handler.AbstractSqlGatewayRestHandler.respondToRequest(AbstractSqlGatewayRestHandler.java:52)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.AbstractHandler.respondAsLeader(AbstractHandler.java:196)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.lambda$channelRead0$0(LeaderRetrievalHandler.java:88)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at java.util.Optional.ifPresent(Optional.java:159) [?:1.8.0_181]
           at 
org.apache.flink.util.OptionalConsumer.ifPresent(OptionalConsumer.java:45) 
[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:85)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:50)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.router.RouterHandler.routed(RouterHandler.java:115)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:94)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:55)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:233)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:70)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
 [flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
 [flink-dist-1.20.1.jar:1.20.1]
           at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
   Caused by: org.apache.flink.table.gateway.api.utils.SqlGatewayException: 
Failed to fetchResults.
           at 
org.apache.flink.table.gateway.service.SqlGatewayServiceImpl.fetchResults(SqlGatewayServiceImpl.java:231)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.gateway.rest.handler.statement.FetchResultsHandler.handleRequest(FetchResultsHandler.java:89)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
           ... 48 more
   Caused by: 
org.apache.flink.table.gateway.service.utils.SqlExecutionException: Error while 
retrieving result.
           at 
org.apache.flink.table.gateway.service.result.ResultStore$ResultRetrievalThread.run(ResultStore.java:159)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
   Caused by: java.lang.RuntimeException: Failed to fetch next result
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:129)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:100)
 ~[flink-dist-1.20.1.jar:1.20.1]
           at 
org.apache.flink.table.planner.connectors.CollectDynamicSink$CloseableRowIteratorWrapper.hasNext(CollectDynamicSink.java:247)
 ~[?:?]
           at 
org.apache.flink.table.gateway.service.result.ResultStore$ResultRetrievalThread.run(ResultStore.java:155)
 ~[flink-sql-gateway-1.20.1.jar:1.20.1]
   `


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