[FLINK-15980] The notFollowedBy in the end of GroupPattern may be ignored

• Type: Bug
• Status: Reopened
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.9.0
• Component/s: Library / CEP
• Labels: auto-deprioritized-major auto-deprioritized-minor auto-unassigned pull-request-available
• Assignee: Unassigned
• Reporter: shuai.xu
• Created: 11/Feb/20 02:53
• Updated: 17/Jun/22 01:14

Description

If we write a Pattern like this:
Pattern group = Pattern.begin('A').notFollowedBy("B");
Pattern pattern = Pattern.begin(group).followedBy("C");
Let notFollowedBy as the last part of a GroupPattern.

This pattern can be compile normally, but the notFollowedBy("B") doesn't work in fact.

Issue Links

• duplicates: FLINK-26941 Support Pattern end with notFollowedBy with window
• links to: GitHub Pull Request #11235