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https://issues.apache.org/jira/browse/FLINK-5985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924869#comment-15924869
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ASF GitHub Bot commented on FLINK-5985:
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Github user gyfora commented on the issue:
https://github.com/apache/flink/pull/3523
Hm, doesnt seem to work for the first try. What I did is I updated the
client with the new jar based on your backport branch. Redeployed the job with
a savepoint (to get the new Flink version), took a savepoint and tried to
redeploy with the changed topology.
I still seem to get the same error.
Is it possible that the previous checkpoints have an effect on this? In any
case I will double check tomorrow morning and try to do the test again.
> Flink treats every task as stateful (making topology changes impossible)
> ------------------------------------------------------------------------
>
> Key: FLINK-5985
> URL: https://issues.apache.org/jira/browse/FLINK-5985
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.2.0
> Reporter: Gyula Fora
> Priority: Critical
>
> It seems that Flink treats every Task as stateful so changing the topology
> is not possible without setting uid on every single operator.
> If the topology has an iteration this is virtually impossible (or at least
> gets super hacky)
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