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https://issues.apache.org/jira/browse/FLINK-32890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gyula Fora closed FLINK-32890.
------------------------------
Fix Version/s: kubernetes-operator-1.7.0
Resolution: Fixed
merged to main 301b179c1e38904124fbfa22cacac1ee46602dce
> Flink app rolled back with old savepoints (3 hours back in time) while some
> checkpoints have been taken in between
> ------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-32890
> URL: https://issues.apache.org/jira/browse/FLINK-32890
> Project: Flink
> Issue Type: Bug
> Components: Kubernetes Operator
> Reporter: Nicolas Fraison
> Priority: Major
> Labels: pull-request-available
> Fix For: kubernetes-operator-1.7.0
>
>
> Here are all details about the issue:
> * Deployed new release of a flink app with a new operator
> * Flink Operator set the app as stable
> * After some time the app failed and stay in failed state (due to some issue
> with our kafka clusters)
> * Finally decided to rollback the new release just in case it could be the
> root cause of the issue on kafka
> * Operator detect: {{Job is not running but HA metadata is available for
> last state restore, ready for upgrade, Deleting JobManager deployment while
> preserving HA metadata.}} -> rely on last-state (as we do not disable
> fallback), no savepoint taken
> * Flink start JM and deployment of the app. It well find the 3 checkpoints
> * {{Using '/flink-kafka-job-apache-nico/flink-kafka-job-apache-nico' as
> Zookeeper namespace.}}
> * {{Initializing job 'flink-kafka-job' (6b24a364c1905e924a69f3dbff0d26a6).}}
> * {{Recovering checkpoints from
> ZooKeeperStateHandleStore\{namespace='flink-kafka-job-apache-nico/flink-kafka-job-apache-nico/jobs/6b24a364c1905e924a69f3dbff0d26a6/checkpoints'}.}}
> * {{Found 3 checkpoints in
> ZooKeeperStateHandleStore\{namespace='flink-kafka-job-apache-nico/flink-kafka-job-apache-nico/jobs/6b24a364c1905e924a69f3dbff0d26a6/checkpoints'}.}}
> * {{{}Restoring job 6b24a364c1905e924a69f3dbff0d26a6 from Checkpoint 19 @
> 1692268003920 for 6b24a364c1905e924a69f3dbff0d26a6 located at
> }}\{{{}s3p://.../flink-kafka-job-apache-nico/checkpoints/6b24a364c1905e924a69f3dbff0d26a6/chk-19{}}}{{{}.{}}}
> * Job failed because of the missing operator
> {code:java}
> Job 6b24a364c1905e924a69f3dbff0d26a6 reached terminal state FAILED.
> org.apache.flink.runtime.client.JobInitializationException: Could not start
> the JobMaster.
> Caused by: java.util.concurrent.CompletionException:
> java.lang.IllegalStateException: There is no operator for the state
> f298e8715b4d85e6f965b60e1c848cbe * Job 6b24a364c1905e924a69f3dbff0d26a6 has
> been registered for cleanup in the JobResultStore after reaching a terminal
> state.{code}
> * {{Clean up the high availability data for job
> 6b24a364c1905e924a69f3dbff0d26a6.}}
> * {{Removed job graph 6b24a364c1905e924a69f3dbff0d26a6 from
> ZooKeeperStateHandleStore\{namespace='flink-kafka-job-apache-nico/flink-kafka-job-apache-nico/jobgraphs'}.}}
> * JobManager restart and try to resubmit the job but the job was already
> submitted so finished
> * {{Received JobGraph submission 'flink-kafka-job'
> (6b24a364c1905e924a69f3dbff0d26a6).}}
> * {{Ignoring JobGraph submission 'flink-kafka-job'
> (6b24a364c1905e924a69f3dbff0d26a6) because the job already reached a
> globally-terminal state (i.e. FAILED, CANCELED, FINISHED) in a previous
> execution.}}
> * {{Application completed SUCCESSFULLY}}
> * Finally the operator rollback the deployment and still indicate that {{Job
> is not running but HA metadata is available for last state restore, ready for
> upgrade}}
> * But the job metadata are not anymore there (clean previously)
>
> {code:java}
> (CONNECTED [zookeeper-data-eng-multi-cloud.zookeeper-flink.svc:2181]) /> ls
> /flink-kafka-job-apache-nico/flink-kafka-job-apache-nico/jobs/6b24a364c1905e924a69f3dbff0d26a6/checkpoints
> Path
> /flink-kafka-job-apache-nico/flink-kafka-job-apache-nico/jobs/6b24a364c1905e924a69f3dbff0d26a6/checkpoints
> doesn't exist
> (CONNECTED [zookeeper-data-eng-multi-cloud.zookeeper-flink.svc:2181]) /> ls
> /flink-kafka-job-apache-nico/flink-kafka-job-apache-nico/jobs
> (CONNECTED [zookeeper-data-eng-multi-cloud.zookeeper-flink.svc:2181]) /> ls
> /flink-kafka-job-apache-nico/flink-kafka-job-apache-nico
> jobgraphs
> jobs
> leader
> {code}
>
> The rolled back app from flink operator finally take the last provided
> savepoint as no metadata/checkpoints are available. But this last savepoint
> is an old one as during the upgrade the operator decided to rely on
> last-state (The old savepoint taken is a scheduled one)
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