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ASF GitHub Bot commented on FLINK-7461: --------------------------------------- Github user kl0u commented on the issue: https://github.com/apache/flink/pull/4550 From a brief check, I see that this also removed backwards compatibility also for 1.2 for the CEP library. The reason is that the CEP library in Flink 1.2 was the same as in Flink 1.1 (no upgrade) and so it was using the old state abstractions. Given that in the ML we discussed about dropping compatibility with 1.1 and agreed on that, a library should not affect that development, but there must be an explicit discussion in the ML for this specific matter before merging it. Even if this just means just saying that you have to go through 1.3 for CEP if you want to migrate from 1.2 to 1.4. > Remove Backwards compatibility for Flink 1.1 from Flink 1.4 > ----------------------------------------------------------- > > Key: FLINK-7461 > URL: https://issues.apache.org/jira/browse/FLINK-7461 > Project: Flink > Issue Type: Improvement > Affects Versions: 1.4.0 > Reporter: Stefan Richter > Assignee: Stefan Richter > > This issue tracks the removal of Flink 1.1 backwards compatibility from Flink > 1.4. This step is helpful for further developments because it will remove > many old code paths and special cases. In particular, we can drop all > handling for non-partitionable state, i.e. state that was created with the > old {{Checkpointed}} interface. -- This message was sent by Atlassian JIRA (v6.4.14#64029)