Github user tweise commented on a diff in the pull request:
https://github.com/apache/apex-core/pull/359#discussion_r71776847
--- Diff:
engine/src/main/java/com/datatorrent/stram/plan/physical/PhysicalPlan.java ---
@@ -895,8 +895,10 @@ private void redoPartitions(PMapping currentMapping,
String note)
addedPartitions.add(newPartition);
} else {
// check whether mapping was changed
+ int currentPartitionsSize = mainPC.currentPartitions.size();
for (DefaultPartition<Operator> pi : mainPC.currentPartitions) {
- if (pi == newPartition && pi.isModified()) {
+ if (pi == newPartition && (pi.isModified() ||
--- End diff --
When there is only one partition, there is no unifier in the physical plan.
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