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https://issues.apache.org/jira/browse/FLINK-37335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xintong Song reassigned FLINK-37335:
------------------------------------
Assignee: Han Yin
> ForSt fails to generate the first checkpoint in IncrementalCP and NO_CLAIM
> mode.
> --------------------------------------------------------------------------------
>
> Key: FLINK-37335
> URL: https://issues.apache.org/jira/browse/FLINK-37335
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing, Runtime / State Backends
> Affects Versions: 2.0.0
> Reporter: Han Yin
> Assignee: Han Yin
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 2.0.0
>
>
> The {{ForStIncrementalSnapshotStrategy}} throws an exception if it encounters
> a {{sharingFilesStrategy}} of {{FORWARD}} when generating asynchronous
> snapshots. This behavior is designed to fail early in unexpected situations
> where full checkpoints are required for the incremental snapshot strategy.
> However, this incorrectly handles the following scenario: When incremental
> checkpoints are enabled and the job is restored in {{NO_CLAIM}} mode, the
> first checkpoint should be a full checkpoint, meaning the
> {{sharingFilesStrategy}} would be {{{}FORWARD{}}}.
> To address this issue, we let {{ForStIncrementalSnapshotStrategy}} skip
> throwing an exception if it encounters {{FORWARD}} but there are no previous
> snapshots to reuse.
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