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Posted to issues@flink.apache.org by "Till Rohrmann (Jira)" <ji...@apache.org> on 2021/05/05 13:23:00 UTC

[jira] [Updated] (FLINK-20465) Fail globally when not resuming from the latest checkpoint in regional failover

     [ https://issues.apache.org/jira/browse/FLINK-20465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann updated FLINK-20465:
----------------------------------
    Fix Version/s:     (was: 1.12.4)
                       (was: 1.14.0)

> Fail globally when not resuming from the latest checkpoint in regional failover
> -------------------------------------------------------------------------------
>
>                 Key: FLINK-20465
>                 URL: https://issues.apache.org/jira/browse/FLINK-20465
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.12.0
>            Reporter: Till Rohrmann
>            Priority: Critical
>
> As a follow up for FLINK-20290 we should assert that we resume from the latest checkpoint when doing a regional failover in the {{SourceCoordinators}} in order to avoid losing input splits (see FLINK-20427). If the assumption does not hold, then we should fail the job globally so that we reset the master state to a consistent view of the state. Such a behaviour can act as a safety net in case that Flink ever tries to recover from not the latest available checkpoint.
> One idea how to solve it is to remember the latest completed checkpoint id somewhere along the way to the {{SplitAssignmentTracker.getAndRemoveUncheckpointedAssignment}} and failing when the restored checkpoint id is smaller.
> cc [~sewen], [~jqin]



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