Github user arunmahadevan commented on a diff in the pull request:
https://github.com/apache/storm/pull/1086#discussion_r52136631
--- Diff: storm-core/src/jvm/org/apache/storm/trident/Stream.java ---
@@ -436,8 +444,91 @@ public Stream partitionAggregate(Fields inputFields,
ReducerAggregator agg, Fiel
return chainedAgg()
.partitionAggregate(inputFields, agg, functionFields)
.chainEnd();
- }
-
+ }
+
+ /**
+ * This aggregator operation computes the minimum of tuples by the
given {@code inputFieldName} and it is
+ * assumed that its value is an instance of {@code Comparable}.
+ *
+ * @param inputFieldName input field name
+ * @return
--- End diff --
`@return the new Stream` (and the javadocs below).
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