sunsence edited a comment on issue #6124: [FLINK-8914][CEP]Fix wrong semantic when greedy pattern is the head of the pattern URL: https://github.com/apache/flink/pull/6124#issuecomment-469992799 @dawidwys The proper AfterMatchSkip strategy can only work on some situations, such as `List<String> strings = Arrays.asList("1,3,5,5,5,5,1,6,".split(",")); DataStream<String> input = env.fromCollection(strings); Pattern<String, ?> pattern = Pattern.<String> begin("start", AfterMatchSkipStrategy.skipPastLastEvent()).where(new SimpleCondition<String>() { @Override public boolean filter(String value) { return value.equals("5"); } }).oneOrMore() .followedBy("end").where(new SimpleCondition<String>() { @Override public boolean filter(String value) { return value.equals("6"); } });` The output is : **======= 5 5 5 5 6 ======= ** While ,when I have only one pattern，it doesn't work fine. ` List<String> strings = Arrays.asList("1,3,5,5,5,5,1,6,".split(",")); DataStream<String> input = env.fromCollection(strings); Pattern<String, ?> pattern = Pattern.<String> begin("start", AfterMatchSkipStrategy.skipPastLastEvent()).where(new SimpleCondition<String>() { @Override public boolean filter(String value) { return value.equals("5"); } }).oneOrMore().greedy()` The output is : **======= 5 ====== ======= 5 ====== ======= 5 ====== ======= 5 ====== **
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