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https://issues.apache.org/jira/browse/FLINK-30864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-30864.
---------------------------
Fix Version/s: 1.17.0
1.15.4
1.16.2
Resolution: Fixed
Fixed in:
- master via 845d04d07d623e93a5bc3276eab45eed9edec264
- release-1.17 via cf448f05c5605f37dd170f8709f28d836feba5a6
- release-1.16 via b13a11c04c0fe96ee5a05878fbab99df7ec3478f
- release-1.15 via 1ac1e0d7dd078a85cb0f127aa75e161e03b2fd41
> Optional pattern at the start of a group pattern not working
> ------------------------------------------------------------
>
> Key: FLINK-30864
> URL: https://issues.apache.org/jira/browse/FLINK-30864
> Project: Flink
> Issue Type: Bug
> Components: Library / CEP
> Affects Versions: 1.16.1
> Reporter: Juntao Hu
> Assignee: Juntao Hu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.17.0, 1.15.4, 1.16.2
>
>
> The optional pattern at the start of a group pattern turns out be "not
> optional", e.g.
> {code:java}
> Pattern.<String>begin("A").next(Pattern.<String>begin("B").optional().next("C")).next("D")
> {code}
> cannot match sequence "a1 c1 d1".
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