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https://issues.apache.org/jira/browse/FLINK-6633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16057176#comment-16057176
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Stefan Richter commented on FLINK-6633:
---------------------------------------

[~cre...@gmail.com], I think this log was already enough to figure out the 
problem. Good news is, the basic incremental checkpointing works as expected. 
Bad news is the combination of {{StandaloneCompletedCheckpointStore}} and 
externalized checkpoints is broken. {{StandaloneCompletedCheckpointStore}} does 
not recover completed checkpoints on restore and therefore does not re-register 
them. The fix will first add the checkpoint from which we restored to the 
{{StandaloneCompletedCheckpointStore}}, so that it can be registered as shared 
state again, and references from future checkpoints work.

> Register with shared state registry before adding to CompletedCheckpointStore
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-6633
>                 URL: https://issues.apache.org/jira/browse/FLINK-6633
>             Project: Flink
>          Issue Type: Sub-task
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.3.0
>            Reporter: Stefan Richter
>            Assignee: Stefan Richter
>            Priority: Blocker
>             Fix For: 1.3.0
>
>
> Introducing placeholders for previously existing shared state requires a 
> change that shared state is first registering with {{SharedStateregistry}} 
> (thereby being consolidated) and only after that added to a 
> {{CompletedCheckpointStore}}, so that the consolidated checkpoint is written 
> to stable storage. 



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