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https://issues.apache.org/jira/browse/FLINK-3319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15352616#comment-15352616
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ASF GitHub Bot commented on FLINK-3319:
---------------------------------------

Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2171#discussion_r68719946
  
    --- Diff: 
flink-libraries/flink-cep/src/test/java/org/apache/flink/cep/CEPITCase.java ---
    @@ -424,87 +423,71 @@ public Integer select(Map<String, Integer> pattern) 
throws Exception {
                env.execute();
        }
     
    +   /**
    +    * Checks that a certain event sequence is recognized with an OR filter
    +    * @throws Exception
    +    */
        @Test
    -   public void testTimeoutHandling() throws Exception {
    --- End diff --
    
    Why do you remove the `testTimeoutHandling` test?


> Add or operator to CEP's pattern API
> ------------------------------------
>
>                 Key: FLINK-3319
>                 URL: https://issues.apache.org/jira/browse/FLINK-3319
>             Project: Flink
>          Issue Type: Improvement
>          Components: CEP
>    Affects Versions: 1.0.0
>            Reporter: Till Rohrmann
>            Assignee: Robert Thorman
>            Priority: Minor
>
> Adding an {{or}} operator to CEP's pattern API would be beneficial. This 
> would considerably extend the set of supported patterns. The {{or}} operator 
> lets you define multiple succeeding pattern states for the next stage.
> {code}
> Pattern.begin("start").next("middle1").where(...).or("middle2").where(...)
> {code}
> In order to implement the {{or}} operator, one has to extend the {{Pattern}} 
> class. Furthermore, the {{NFACompiler}} has to be extended to generate two 
> resulting pattern states in case of an {{or}} operator.



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