Github user sandeshh commented on a diff in the pull request:
https://github.com/apache/apex-core/pull/350#discussion_r68493910
--- Diff:
engine/src/main/java/com/datatorrent/stram/engine/StreamingContainer.java ---
@@ -769,7 +769,11 @@ public void
processHeartbeatResponse(ContainerHeartbeatResponse rsp)
}
if (rsp.committedWindowId != lastCommittedWindowId) {
+
lastCommittedWindowId = rsp.committedWindowId;
+
+ bufferServer.purge(lastCommittedWindowId);
--- End diff --
Working on that, here are the current finding.
1. Previous purge kept one extra window before the committed window.
2. Couldn't find the history for that in GitHub. That change is present
atleast from 2013.
Next steps
Will conduct few test scenario to see why we need a window before the
committed window in the buffer server.
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