[jira] [Created] (FLINK-22014) Flink JobManager failed to restart after failure in kubernetes HA setup

[Shang Yuanchun (Jira)]

Mikalai Lushchytski created FLINK-22014:
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             Summary: Flink JobManager failed to restart after failure in kubernetes HA setup
                 Key: FLINK-22014
                 URL: https://issues.apache.org/jira/browse/FLINK-22014
             Project: Flink
          Issue Type: Bug
          Components: Deployment / Kubernetes
    Affects Versions: 1.12.2
            Reporter: Mikalai Lushchytski


After the JobManager pod failed and the new one started, it was not able to recover jobs due to the absence of recovery data in storage - config map pointed at not existing file.
 
Due to this the JobManager pod entered into the `CrashLoopBackOff`state and was not able to recover - each attempt failed with the same error so the whole cluster became unrecoverable and not operating.
 
I had to manually delete the config map and start the jobs again without the save point.
 
If I tried to emulate the failure further by deleting job manager pod manually, the new pod every time recovered well and issue was not reproducible anymore artificially.
 
Below is the failure log:

```
2021-03-26 08:22:57,925 INFO org.apache.flink.runtime.resourcemanager.slotmanager.SlotManagerImpl [] - Starting the SlotManager.
2021-03-26 08:22:57,928 INFO org.apache.flink.runtime.leaderretrieval.DefaultLeaderRetrievalService [] - Starting DefaultLeaderRetrievalService with KubernetesLeaderRetrievalDriver{configMapName='stellar-flink-cluster-dispatcher-leader'}.
2021-03-26 08:22:57,931 INFO org.apache.flink.runtime.jobmanager.DefaultJobGraphStore [] - Retrieved job ids [198c46bac791e73ebcc565a550fa4ff6, 344f5ebc1b5c3a566b4b2837813e4940, 96c4603a0822d10884f7fe536703d811, d9ded24224aab7c7041420b3efc1b6ba] from KubernetesStateHandleStore{configMapName='stellar-flink-cluster-dispatcher-leader'}
2021-03-26 08:22:57,933 INFO org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess [] - Trying to recover job with job id 198c46bac791e73ebcc565a550fa4ff6.
2021-03-26 08:22:58,029 INFO org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess [] - Stopping SessionDispatcherLeaderProcess.
2021-03-26 08:28:22,677 INFO org.apache.flink.runtime.jobmanager.DefaultJobGraphStore [] - Stopping DefaultJobGraphStore. 2021-03-26 08:28:22,681 ERROR org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] - Fatal error occurred in the cluster entrypoint. java.util.concurrent.CompletionException: org.apache.flink.util.FlinkRuntimeException: Could not recover job with job id 198c46bac791e73ebcc565a550fa4ff6. at java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source) ~[?:?] at java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source) [?:?] at java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown Source) [?:?] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?] at java.lang.Thread.run(Unknown Source) [?:?] Caused by: org.apache.flink.util.FlinkRuntimeException: Could not recover job with job id 198c46bac791e73ebcc565a550fa4ff6. at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJob(SessionDispatcherLeaderProcess.java:144) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJobs(SessionDispatcherLeaderProcess.java:122) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.AbstractDispatcherLeaderProcess.supplyUnsynchronizedIfRunning(AbstractDispatcherLeaderProcess.java:198) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJobsIfRunning(SessionDispatcherLeaderProcess.java:113) ~[flink-dist_2.12-1.12.2.jar:1.12.2] ... 4 more Caused by: org.apache.flink.util.FlinkException: Could not retrieve submitted JobGraph from state handle under jobGraph-198c46bac791e73ebcc565a550fa4ff6. This indicates that the retrieved state handle is broken. Try cleaning the state handle store. at org.apache.flink.runtime.jobmanager.DefaultJobGraphStore.recoverJobGraph(DefaultJobGraphStore.java:171) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJob(SessionDispatcherLeaderProcess.java:141) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJobs(SessionDispatcherLeaderProcess.java:122) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.AbstractDispatcherLeaderProcess.supplyUnsynchronizedIfRunning(AbstractDispatcherLeaderProcess.java:198) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJobsIfRunning(SessionDispatcherLeaderProcess.java:113) ~[flink-dist_2.12-1.12.2.jar:1.12.2] ... 4 more Caused by: java.io.FileNotFoundException: No such file or directory: s3a://XXX-flink-state-eu-central-1-live/recovery/YYY-flink-cluster/submittedJobGraph6797768d0737 at org.apache.hadoop.fs.s3a.S3AFileSystem.s3GetFileStatus(S3AFileSystem.java:2255) ~[?:?] at org.apache.hadoop.fs.s3a.S3AFileSystem.innerGetFileStatus(S3AFileSystem.java:2149) ~[?:?] at org.apache.hadoop.fs.s3a.S3AFileSystem.getFileStatus(S3AFileSystem.java:2088) ~[?:?] at org.apache.hadoop.fs.s3a.S3AFileSystem.open(S3AFileSystem.java:699) ~[?:?] at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:950) ~[?:?] at org.apache.flink.fs.s3hadoop.common.HadoopFileSystem.open(HadoopFileSystem.java:131) ~[?:?] at org.apache.flink.fs.s3hadoop.common.HadoopFileSystem.open(HadoopFileSystem.java:37) ~[?:?] at org.apache.flink.core.fs.PluginFileSystemFactory$ClassLoaderFixingFileSystem.open(PluginFileSystemFactory.java:125) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.state.filesystem.FileStateHandle.openInputStream(FileStateHandle.java:68) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.state.RetrievableStreamStateHandle.openInputStream(RetrievableStreamStateHandle.java:66) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.state.RetrievableStreamStateHandle.retrieveState(RetrievableStreamStateHandle.java:58) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.jobmanager.DefaultJobGraphStore.recoverJobGraph(DefaultJobGraphStore.java:162) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJob(SessionDispatcherLeaderProcess.java:141) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJobs(SessionDispatcherLeaderProcess.java:122) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.AbstractDispatcherLeaderProcess.supplyUnsynchronizedIfRunning(AbstractDispatcherLeaderProcess.java:198) ~[flink-dist_2.12-1.12.2.jar:1.12.2] at org.apache.flink.runtime.dispatcher.runner.SessionDispatcherLeaderProcess.recoverJobsIfRunning(SessionDispatcherLeaderProcess.java:113) ~[flink-dist_2.12-1.12.2.jar:1.12.2] ... 4 more
```



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