Github user gauravgopi123 commented on a diff in the pull request:
https://github.com/apache/incubator-apex-core/pull/185#discussion_r48774037
--- Diff:
engine/src/main/java/com/datatorrent/stram/engine/GenericNode.java ---
@@ -394,6 +463,15 @@ else if (tracker.ports[trackerIndex] == activePort) {
case END_STREAM:
activePort.remove();
buffers.remove();
+ if (firstWindowId == -1) {
+ // this is for recovery from a checkpoint for
DelayOperator
+ if (delay) {
+ // if it's a DelayOperator and this is the first
RESET_WINDOW (start) or END_STREAM (recovery),
+ // fabricate the first window
+ fabricateFirstWindow((Operator.DelayOperator)operator,
windowAhead);
+ }
+ firstWindowId = t.getWindowId();
--- End diff --
Again same Should this firstWindowId not be assigned when delay is true and
firstWindowId == -1?
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