Github user tweise commented on a diff in the pull request:
https://github.com/apache/apex-core/pull/365#discussion_r74525780
--- Diff:
engine/src/main/java/com/datatorrent/stram/plan/physical/StreamMapping.java ---
@@ -285,6 +286,17 @@ private void redoMapping()
if (finalUnifier == null) {
finalUnifier = createUnifier(streamMeta, plan);
}
+ // detach downstream from upstream operator when no final
unifier existed previously
+ for (PTOutput unifierSource : unifierSources) {
+ Iterator<PTInput> sinks = unifierSource.sinks.iterator();
+ while (sinks.hasNext()) {
+ PTInput sink = sinks.next();
+ if (sink.target == doperEntry.first) {
+ doperEntry.first.inputs.remove(sink);
+ sinks.remove();
+ }
+ }
+ }
setInput(doperEntry.first, doperEntry.second, finalUnifier,
(pks == null) || (pks.mask == 0) ? null : pks);
--- End diff --
Good catch, made the change and also added the test coverage.
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