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Posted to issues@flink.apache.org by twalthr <gi...@git.apache.org> on 2018/05/16 07:52:01 UTC

[GitHub] flink pull request #5327: [FLINK-8428] [table] Implement stream-stream non-w...

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

    https://github.com/apache/flink/pull/5327#discussion_r188531694
  
    --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/datastream/DataStreamJoin.scala ---
    @@ -60,6 +60,9 @@ class DataStreamJoin(
     
       override def needsUpdatesAsRetraction: Boolean = true
     
    +  // outer join will generate retractions
    +  override def producesRetractions: Boolean = joinType != JoinRelType.INNER
    --- End diff --
    
    Thanks, now I understand the terminology between producing and just forwarding retractions.


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