Github user sandeshh commented on a diff in the pull request:
https://github.com/apache/apex-core/pull/350#discussion_r68496137
--- 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 --
Wrote a sample application and tested this change by killing the
containers. There was no issue and the recovery started from the expected
window id ( committed + 1 ). Still not sure why we have to keep the window data
of the committed window.
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