Kostas Kloudas created FLINK-5864:
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Summary: CEP: fix duplicate output patterns problem.
Key: FLINK-5864
URL: https://issues.apache.org/jira/browse/FLINK-5864
Project: Flink
Issue Type: Bug
Components: CEP
Affects Versions: 1.3.0
Reporter: Kostas Kloudas
Fix For: 1.3.0
Currently when searching for a pattern {{a,b,c}} and we have input elements {{a
-> b1 -> b2 ->c}} where {{b1}} and {{b2}} are both valid elements for the
position b, then instead of having an output of 2 matched patterns: {{a, b1,
c}} and {{a, b2, c}}, we have 4, with 2 copies of each valid pattern.
The problem is that currently the graph of valid patterns that is created
creates two nodes for c, with each one connected to both b1 and b2. This leads
to each of the instances of c having 2 valid matched patterns.
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