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From: PramodSSImmaneni <git@git.apache.org>
To: dev@apex.incubator.apache.org
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References: <git-pr-271-incubator-apex-core@git.apache.org>
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Subject: [GitHub] incubator-apex-core pull request: APEXCORE-380 - Idle time
 sleep t...
Content-Type: text/plain
Message-Id: <20160317004629.407A3DFBAF@git1-us-west.apache.org>
Date: Thu, 17 Mar 2016 00:46:29 +0000 (UTC)

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

    https://github.com/apache/incubator-apex-core/pull/271#discussion_r56440964
  
    --- Diff: engine/src/main/java/com/datatorrent/stram/engine/GenericNode.java ---
    @@ -608,9 +610,9 @@ else if (tracker.ports[trackerIndex] == null) {
               if (need2sleep) {
                 if (handleIdleTime && insideWindow) {
                   ((IdleTimeHandler) operator).handleIdleTime();
    -            }
    -            else {
    +            } else {
                   Thread.sleep(spinMillis);
    +              spinMillis = Math.min(maxSpinMillis, spinMillis + 1);
    --- End diff --
    
    I had looked at this before in a difference scenario. Can we do a better heuristic. We can have another timeout setting (which is less than streaming window size) where we continue to do busy way till that timeout and if there is no data till then, then initiate the stepwise sleep.


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