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https://issues.apache.org/jira/browse/FLINK-6853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tzu-Li (Gordon) Tai closed FLINK-6853.
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> Migrating from Flink 1.1 fails for FlinkCEP
> -------------------------------------------
>
> Key: FLINK-6853
> URL: https://issues.apache.org/jira/browse/FLINK-6853
> Project: Flink
> Issue Type: Bug
> Components: CEP
> Affects Versions: 1.3.0
> Reporter: Tzu-Li (Gordon) Tai
> Assignee: Tzu-Li (Gordon) Tai
> Fix For: 1.3.1, 1.4.0
>
>
> Migrating from Flink 1.1 fails for CEP, since in 1.1, the legacy
> {{MultiplexingStreamRecordSerializer}} is used for stream elements in the
> serialized priority queue (via the {{PriorityQueueSerializer}}).
> In newer versions, the {{StreamElementSerializer}} is used instead. For this
> to work, we need to implement the compatibility methods for
> {{StreamElementSerializer}} such that it is also compatible with
> configuration snapshots taken from the {{MultiplexingStreamRecordSerializer}}.
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