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From PramodSSImmaneni <...@git.apache.org>
Subject [GitHub] incubator-apex-core pull request: Checkpoint notification to notif...
Date Thu, 07 Jan 2016 02:29:46 GMT
Github user PramodSSImmaneni commented on a diff in the pull request:

    https://github.com/apache/incubator-apex-core/pull/187#discussion_r49036338
  
    --- Diff: engine/src/main/java/com/datatorrent/stram/engine/Node.java ---
    @@ -485,6 +485,10 @@ protected void deactivateSinks()
     
       void checkpoint(long windowId)
       {
    +    if (operator instanceof Operator.CheckpointNotificationListener) {
    --- End diff --
    
    I see your point Thomas but as chinmay pointed out shouldn't both this and checkpointed
callback not be called for stateless. Gaurav if you use this call in stateless operator to
persist your operator state in your own way there is no inverse callback from the platform
to recover that state.


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