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https://issues.apache.org/jira/browse/FLINK-6742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027477#comment-16027477
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Gyula Fora commented on FLINK-6742:
-----------------------------------
what's the reason for not allowing the removal / new operators here?
> Savepoint conversion might fail if operators change
> ---------------------------------------------------
>
> Key: FLINK-6742
> URL: https://issues.apache.org/jira/browse/FLINK-6742
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.3.0
> Reporter: Gyula Fora
> Priority: Critical
>
> Caused by: java.lang.NullPointerException
> at
> org.apache.flink.runtime.checkpoint.savepoint.SavepointV2.convertToOperatorStateSavepointV2(SavepointV2.java:171)
> at
> org.apache.flink.runtime.checkpoint.savepoint.SavepointLoader.loadAndValidateSavepoint(SavepointLoader.java:75)
> at
> org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreSavepoint(CheckpointCoordinator.java:1090)
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