How are you running the Flink cluster? What is your deplyment?

The exception clearly indicates that you found a bug. Could you open an ticket in Flink's JIRA? We need details how to reproduce it.

Thanks,
Timo


On 15.01.21 17:57, Robert Cullen wrote:
Timo,

Here it is:

|2021-01-15 16:52:00,628 WARN org.apache.flink.runtime.webmonitor.handlers.JarRunHandler [] - Configuring the job submission via query parameters is deprecated. Please migrate to submitting a JSON request instead. 2021-01-15 16:52:00,640 INFO org.apache.flink.client.ClientUtils [] - Starting program (detached: true) 2021-01-15 16:52:00,678 INFO org.apache.flink.client.deployment.application.executors.EmbeddedExecutor [] - Job 84c9f12fe943bc7f32ee637666ed3bc1 is submitted. 2021-01-15 16:52:00,678 INFO org.apache.flink.client.deployment.application.executors.EmbeddedExecutor [] - Submitting Job with JobId=84c9f12fe943bc7f32ee637666ed3bc1. 2021-01-15 16:52:00,830 INFO org.apache.flink.runtime.dispatcher.StandaloneDispatcher [] - Received JobGraph submission 84c9f12fe943bc7f32ee637666ed3bc1 (collect). 2021-01-15 16:52:00,830 INFO org.apache.flink.runtime.dispatcher.StandaloneDispatcher [] - Submitting job 84c9f12fe943bc7f32ee637666ed3bc1 (collect). 2021-01-15 16:52:00,831 INFO org.apache.flink.runtime.rpc.akka.AkkaRpcService [] - Starting RPC endpoint for org.apache.flink.runtime.jobmaster.JobMaster at akka://flink/user/rpc/jobmanager_68 . 2021-01-15 16:52:00,831 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Initializing job collect (84c9f12fe943bc7f32ee637666ed3bc1). 2021-01-15 16:52:00,832 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Using restart back off time strategy NoRestartBackoffTimeStrategy for collect (84c9f12fe943bc7f32ee637666ed3bc1). 2021-01-15 16:52:00,832 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Running initialization on master for job collect (84c9f12fe943bc7f32ee637666ed3bc1). 2021-01-15 16:52:00,836 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Successfully ran initialization on master in 3 ms. 2021-01-15 16:52:00,836 INFO org.apache.flink.runtime.scheduler.adapter.DefaultExecutionTopology [] - Built 1 pipelined regions in 0 ms 2021-01-15 16:52:00,836 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Using job/cluster config to configure application-defined state backend: File State Backend (checkpoints: 's3://flink/checkpoints', savepoints: 's3://flink/savepoints', asynchronous: TRUE, fileStateThreshold: 20480) 2021-01-15 16:52:00,836 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Using application-defined state backend: File State Backend (checkpoints: 's3://flink/checkpoints', savepoints: 's3://flink/savepoints', asynchronous: TRUE, fileStateThreshold: 20480) 2021-01-15 16:52:06,865 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator [] - No checkpoint found during restore. 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Using failover strategy org.apache.flink.runtime.executiongraph.failover.flip1.RestartPipelinedRegionFailoverStrategy@39b9ad24 for collect (84c9f12fe943bc7f32ee637666ed3bc1). 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.jobmaster.JobManagerRunnerImpl [] - JobManager runner for job collect (84c9f12fe943bc7f32ee637666ed3bc1) was granted leadership with session id 00000000-0000-0000-0000-000000000000 at akka.tcp://flink@flink-jobmanager:6123/user/rpc/jobmanager_68. 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Starting execution of job collect (84c9f12fe943bc7f32ee637666ed3bc1) under job master id 00000000000000000000000000000000. 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Starting scheduling with scheduling strategy [org.apache.flink.runtime.scheduler.strategy.PipelinedRegionSchedulingStrategy] 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Job collect (84c9f12fe943bc7f32ee637666ed3bc1) switched from state CREATED to RUNNING. 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Source: JdbcTableSource(msg_id, hostname, last_updated) -> SourceConversion(table=[default_catalog.default_database.log_counts, source: [JdbcTableSource(msg_id, hostname, last_updated)]], fields=[msg_id, hostname, last_updated]) -> WatermarkAssigner(rowtime=[last_updated], watermark=[(last_updated - 5000:INTERVAL SECOND)]) -> Calc(select=[msg_id, hostname, last_updated], where=[(hostname <> _UTF-16LE'')]) (1/1) (d22b3ac56f07e182ba5b74d68fa74fb1) switched from CREATED to SCHEDULED. 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - GroupWindowAggregate(groupBy=[msg_id, hostname], window=[TumblingGroupWindow('w, last_updated, 300000)], select=[msg_id, hostname, COUNT(msg_id) AS EXPR$0]) -> Calc(select=[msg_id, hostname, EXPR$0 AS cnt]) -> SinkConversionToTuple2 -> Sink: Select table sink (1/1) (09cee06206ad355b327cb8487773cd39) switched from CREATED to SCHEDULED. 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.jobmaster.slotpool.SlotPoolImpl [] - Cannot serve slot request, no ResourceManager connected. Adding as pending request [SlotRequestId{b3f1b6b4eaab427305ec15f92a39531e}] 2021-01-15 16:52:06,866 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Connecting to ResourceManager akka.tcp://flink@flink-jobmanager:6123/user/rpc/resourcemanager_*(00000000000000000000000000000000) 2021-01-15 16:52:06,867 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Resolved ResourceManager address, beginning registration 2021-01-15 16:52:06,867 INFO org.apache.flink.runtime.resourcemanager.StandaloneResourceManager [] - Registering job manager 00000000000000000000000000000...@akka.tcp://flink@flink-jobmanager:6123/user/rpc/jobmanager_68 for job 84c9f12fe943bc7f32ee637666ed3bc1. 2021-01-15 16:52:06,867 INFO org.apache.flink.runtime.resourcemanager.StandaloneResourceManager [] - Registered job manager 00000000000000000000000000000...@akka.tcp://flink@flink-jobmanager:6123/user/rpc/jobmanager_68 for job 84c9f12fe943bc7f32ee637666ed3bc1. 2021-01-15 16:52:06,867 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - JobManager successfully registered at ResourceManager, leader id: 00000000000000000000000000000000. 2021-01-15 16:52:06,867 INFO org.apache.flink.runtime.jobmaster.slotpool.SlotPoolImpl [] - Requesting new slot [SlotRequestId{b3f1b6b4eaab427305ec15f92a39531e}] and profile ResourceProfile{UNKNOWN} with allocation id b0559997a428b1d31d9e57d6532e026b from resource manager. 2021-01-15 16:52:06,868 INFO org.apache.flink.runtime.resourcemanager.StandaloneResourceManager [] - Request slot with profile ResourceProfile{UNKNOWN} for job 84c9f12fe943bc7f32ee637666ed3bc1 with allocation id b0559997a428b1d31d9e57d6532e026b. 2021-01-15 16:52:06,874 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Source: JdbcTableSource(msg_id, hostname, last_updated) -> SourceConversion(table=[default_catalog.default_database.log_counts, source: [JdbcTableSource(msg_id, hostname, last_updated)]], fields=[msg_id, hostname, last_updated]) -> WatermarkAssigner(rowtime=[last_updated], watermark=[(last_updated - 5000:INTERVAL SECOND)]) -> Calc(select=[msg_id, hostname, last_updated], where=[(hostname <> _UTF-16LE'')]) (1/1) (d22b3ac56f07e182ba5b74d68fa74fb1) switched from SCHEDULED to DEPLOYING. 2021-01-15 16:52:06,882 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Deploying Source: JdbcTableSource(msg_id, hostname, last_updated) -> SourceConversion(table=[default_catalog.default_database.log_counts, source: [JdbcTableSource(msg_id, hostname, last_updated)]], fields=[msg_id, hostname, last_updated]) -> WatermarkAssigner(rowtime=[last_updated], watermark=[(last_updated - 5000:INTERVAL SECOND)]) -> Calc(select=[msg_id, hostname, last_updated], where=[(hostname <> _UTF-16LE'')]) (1/1) (attempt #0) with attempt id d22b3ac56f07e182ba5b74d68fa74fb1 to 10.42.1.148:6122-9b9553 @ 10.42.1.148 (dataPort=40391) with allocation id b0559997a428b1d31d9e57d6532e026b 2021-01-15 16:52:06,883 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - GroupWindowAggregate(groupBy=[msg_id, hostname], window=[TumblingGroupWindow('w, last_updated, 300000)], select=[msg_id, hostname, COUNT(msg_id) AS EXPR$0]) -> Calc(select=[msg_id, hostname, EXPR$0 AS cnt]) -> SinkConversionToTuple2 -> Sink: Select table sink (1/1) (09cee06206ad355b327cb8487773cd39) switched from SCHEDULED to DEPLOYING. 2021-01-15 16:52:06,883 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Deploying GroupWindowAggregate(groupBy=[msg_id, hostname], window=[TumblingGroupWindow('w, last_updated, 300000)], select=[msg_id, hostname, COUNT(msg_id) AS EXPR$0]) -> Calc(select=[msg_id, hostname, EXPR$0 AS cnt]) -> SinkConversionToTuple2 -> Sink: Select table sink (1/1) (attempt #0) with attempt id 09cee06206ad355b327cb8487773cd39 to 10.42.1.148:6122-9b9553 @ 10.42.1.148 (dataPort=40391) with allocation id b0559997a428b1d31d9e57d6532e026b 2021-01-15 16:52:07,038 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - GroupWindowAggregate(groupBy=[msg_id, hostname], window=[TumblingGroupWindow('w, last_updated, 300000)], select=[msg_id, hostname, COUNT(msg_id) AS EXPR$0]) -> Calc(select=[msg_id, hostname, EXPR$0 AS cnt]) -> SinkConversionToTuple2 -> Sink: Select table sink (1/1) (09cee06206ad355b327cb8487773cd39) switched from DEPLOYING to RUNNING. 2021-01-15 16:52:07,038 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Source: JdbcTableSource(msg_id, hostname, last_updated) -> SourceConversion(table=[default_catalog.default_database.log_counts, source: [JdbcTableSource(msg_id, hostname, last_updated)]], fields=[msg_id, hostname, last_updated]) -> WatermarkAssigner(rowtime=[last_updated], watermark=[(last_updated - 5000:INTERVAL SECOND)]) -> Calc(select=[msg_id, hostname, last_updated], where=[(hostname <> _UTF-16LE'')]) (1/1) (d22b3ac56f07e182ba5b74d68fa74fb1) switched from DEPLOYING to RUNNING. 2021-01-15 16:52:07,057 INFO org.apache.flink.streaming.api.operators.collect.CollectSinkOperatorCoordinator [] - Received sink socket server address: /10.42.1.148:39303 <http://10.42.1.148:39303> 2021-01-15 16:52:07,060 WARN org.apache.flink.runtime.taskmanager.TaskManagerLocation [] - No hostname could be resolved for the IP address 10.42.1.148, using IP address as host name. Local input split assignment (such as for HDFS files) may be impacted. 2021-01-15 16:52:07,988 WARN org.apache.flink.client.deployment.application.DetachedApplicationRunner [] - Could not execute application: org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: Failed to execute sql at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:330) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:198) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.client.deployment.application.DetachedApplicationRunner.tryExecuteJobs(DetachedApplicationRunner.java:78) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.client.deployment.application.DetachedApplicationRunner.run(DetachedApplicationRunner.java:67) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.runtime.webmonitor.handlers.JarRunHandler.lambda$handleRequest$0(JarRunHandler.java:100) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604) [?:1.8.0_275] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_275] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_275] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_275] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:1.8.0_275] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_275] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_275] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275] Caused by: org.apache.flink.table.api.TableException: Failed to execute sql at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:719) ~[flink-table-blink_2.12-1.12.0.jar:1.12.0] at org.apache.flink.table.api.internal.TableImpl.execute(TableImpl.java:570) ~[flink-table-blink_2.12-1.12.0.jar:1.12.0] at io.cmdaa.streaming.java.jdbc.TableConsumer.main(TableConsumer.java:192) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275] at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:316) ~[flink-dist_2.12-1.12.0.jar:1.12.0] ... 13 more Caused by: java.lang.IllegalArgumentException: Job client must be a CoordinationRequestGateway. This is a bug. at org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:142) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.setJobClient(CollectResultFetcher.java:95) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.streaming.api.operators.collect.CollectResultIterator.setJobClient(CollectResultIterator.java:98) ~[flink-dist_2.12-1.12.0.jar:1.12.0] at org.apache.flink.table.planner.sinks.SelectTableSinkBase$1.setJobClient(SelectTableSinkBase.java:93) ~[flink-table-blink_2.12-1.12.0.jar:1.12.0] at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:709) ~[flink-table-blink_2.12-1.12.0.jar:1.12.0] at org.apache.flink.table.api.internal.TableImpl.execute(TableImpl.java:570) ~[flink-table-blink_2.12-1.12.0.jar:1.12.0] at io.cmdaa.streaming.java.jdbc.TableConsumer.main(TableConsumer.java:192) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275] at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:316) ~[flink-dist_2.12-1.12.0.jar:1.12.0] ... 13 more 2021-01-15 16:52:07,989 ERROR org.apache.flink.runtime.webmonitor.handlers.JarRunHandler [] - Exception occurred in REST handler: Could not execute application. 2021-01-15 16:52:08,462 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Source: JdbcTableSource(msg_id, hostname, last_updated) -> SourceConversion(table=[default_catalog.default_database.log_counts, source: [JdbcTableSource(msg_id, hostname, last_updated)]], fields=[msg_id, hostname, last_updated]) -> WatermarkAssigner(rowtime=[last_updated], watermark=[(last_updated - 5000:INTERVAL SECOND)]) -> Calc(select=[msg_id, hostname, last_updated], where=[(hostname <> _UTF-16LE'')]) (1/1) (d22b3ac56f07e182ba5b74d68fa74fb1) switched from RUNNING to FINISHED. 2021-01-15 16:52:08,465 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - GroupWindowAggregate(groupBy=[msg_id, hostname], window=[TumblingGroupWindow('w, last_updated, 300000)], select=[msg_id, hostname, COUNT(msg_id) AS EXPR$0]) -> Calc(select=[msg_id, hostname, EXPR$0 AS cnt]) -> SinkConversionToTuple2 -> Sink: Select table sink (1/1) (09cee06206ad355b327cb8487773cd39) switched from RUNNING to FINISHED. 2021-01-15 16:52:08,465 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph [] - Job collect (84c9f12fe943bc7f32ee637666ed3bc1) switched from state RUNNING to FINISHED. 2021-01-15 16:52:08,466 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator [] - Stopping checkpoint coordinator for job 84c9f12fe943bc7f32ee637666ed3bc1. 2021-01-15 16:52:08,466 INFO org.apache.flink.runtime.checkpoint.StandaloneCompletedCheckpointStore [] - Shutting down 2021-01-15 16:52:08,466 INFO org.apache.flink.runtime.dispatcher.StandaloneDispatcher [] - Job 84c9f12fe943bc7f32ee637666ed3bc1 reached globally terminal state FINISHED. 2021-01-15 16:52:08,467 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Stopping the JobMaster for job collect(84c9f12fe943bc7f32ee637666ed3bc1). 2021-01-15 16:52:08,467 INFO org.apache.flink.runtime.jobmaster.slotpool.SlotPoolImpl [] - Suspending SlotPool. 2021-01-15 16:52:08,468 INFO org.apache.flink.runtime.jobmaster.JobMaster [] - Close ResourceManager connection a76a3c5321498f13d0552421928c6062: Stopping JobMaster for job collect(84c9f12fe943bc7f32ee637666ed3bc1).. 2021-01-15 16:52:08,468 INFO org.apache.flink.runtime.jobmaster.slotpool.SlotPoolImpl [] - Stopping SlotPool. 2021-01-15 16:52:08,468 INFO org.apache.flink.runtime.resourcemanager.StandaloneResourceManager [] - Disconnect job manager 00000000000000000000000000000...@akka.tcp://flink@flink-jobmanager:6123/user/rpc/jobmanager_68 for job 84c9f12fe943bc7f32ee637666ed3bc1 from the resource manager. |

On Fri, Jan 15, 2021 at 11:32 AM Timo Walther twal...@apache.org <http://mailto:twal...@apache.org> wrote:

    Hi Robert,

    could you send us the error/stacktrace that is printed?

    An example how it should work is shown here:

    
https://github.com/apache/flink/blob/master/flink-examples/flink-examples-table/src/main/java/org/apache/flink/table/examples/java/basics/UpdatingTopCityExample.java
    
<https://github.com/apache/flink/blob/master/flink-examples/flink-examples-table/src/main/java/org/apache/flink/table/examples/java/basics/UpdatingTopCityExample.java>

    
https://github.com/apache/flink/blob/master/flink-examples/flink-examples-table/src/main/java/org/apache/flink/table/examples/java/basics/GettingStartedExample.java
    
<https://github.com/apache/flink/blob/master/flink-examples/flink-examples-table/src/main/java/org/apache/flink/table/examples/java/basics/GettingStartedExample.java>

    Regards,
    Timo

    On 15.01.21 16:46, Robert Cullen wrote:
     > I’m using a query to gather results:
     >
     > |Table log_counts = tEnv.from("log_counts")
     > .filter($("hostname").isNotNull()
    .and($("hostname").isNotEqual("")))
     > .window(Tumble .over(lit(30).seconds())
    .on($("last_updated")).as("w"))
     > .groupBy($("msg_id"), $("hostname"), $("w")) .select($("msg_id"),
     > $("hostname"), $("msg_id").count().as("cnt")); |
     >
     > I’d like to iterate over the results but using this causes an error:
     >
     > |log_counts.execute().collect();
     > |
     >
     > Has there been an update in how to traverse results?
     >
     >
     > Robert Cullen
     > 240-475-4490
     >

--
Robert Cullen
240-475-4490

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