[jira] [Commented] (FLINK-37370) [Observer] Finished batch jobs throw ReconciliationException and never reach FINISHED in the CR

["Gyula Fora (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-37370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17936047#comment-17936047 ] 

Gyula Fora commented on FLINK-37370:
------------------------------------

merged to main:
c4d460bb4fd3b67b4a23a840a87f811ea5463b70

> [Observer] Finished batch jobs throw ReconciliationException and never reach FINISHED in the CR
> -----------------------------------------------------------------------------------------------
>
>                 Key: FLINK-37370
>                 URL: https://issues.apache.org/jira/browse/FLINK-37370
>             Project: Flink
>          Issue Type: Bug
>          Components: Kubernetes Operator
>    Affects Versions: kubernetes-operator-1.10.0
>         Environment: I've attached the flinkdeployment CR I used to locally replicate.
>            Reporter: Luca Castelli
>            Assignee: Luca Castelli
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: kubernetes-operator-1.12.0
>
>         Attachments: operator-log-batch-job.log, test-batch-job.yaml
>
>
> The root error (full logs attached):
>  
> {code:java}
> Caused by: org.apache.flink.runtime.rest.util.RestClientException: [org.apache.flink.runtime.rest.handler.RestHandlerException: Checkpointing has not been enabled.
>     at org.apache.flink.runtime.rest.handler.job.checkpoints.CheckpointingStatisticsHandler.createCheckpointingStatistics(CheckpointingStatisticsHandler.java:107)
> {code}
>  # The job finishes successfully and the job status changes to FINISHED in memory
>  # In the observation loop, in [AbstractFlinkService.getCheckpointInfo|https://github.com/apache/flink-kubernetes-operator/blob/main/flink-kubernetes-operator/src/main/java/org/apache/flink/kubernetes/operator/service/AbstractFlinkService.java#L570], the operator successfully connects to the Flink REST API
>  # It tries to get checkpoint statistics via CheckpointingStatisticsHandler, but the handler throws an error because checkpointing is not enabled. This is an expected response since it's a batch job
> E.g. [http://localhost:8081/jobs/job-id/checkpoints]
> {code:java}
> { "errors": [ "org.apache.flink.runtime.rest.handler.RestHandlerException: Checkpointing has not been enabled.\n\tat org.apache.flink.runtime.rest.handler.job.checkpoints.CheckpointingStatisticsHandler.createCheckpointingStatistics(CheckpointingStatisticsHandler.java:107)\n\tat org.apache.flink.runtime.rest.handler.job.checkpoints.CheckpointingStatisticsHandler.handleCheckpointStatsRequest(CheckpointingStatisticsHandler.java:85)\n\tat org.apache.flink.runtime.rest.handler.job.checkpoints.CheckpointingStatisticsHandler.handleCheckpointStatsRequest(CheckpointingStatisticsHandler.java:59)\n\tat org.apache.flink.runtime.rest.handler.job.checkpoints.AbstractCheckpointStatsHandler.lambda$handleRequest$1(AbstractCheckpointStatsHandler.java:89)\n\tat java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:642)\n\tat java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)\n\tat java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)\n\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n\tat java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n\tat java.base/java.lang.Thread.run(Thread.java:829)\n" ] }{code}
>      4. The REST endpoint exists but returns the exception which then bubbles up to 
> {code:java}
> org.apache.flink.kubernetes.operator.exception.ReconciliationException: Could not observe latest savepoint information{code}
>  in the operator and continues being thrown in a loop
>     5. The deployment is never cleaned up and never reaches a FINISHED JOB STATUS in the CR
>  



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