Github user arunmahadevan commented on a diff in the pull request:
https://github.com/apache/storm/pull/1798#discussion_r92643170
--- Diff: storm-core/src/jvm/org/apache/storm/state/KeyValueState.java ---
@@ -52,4 +55,9 @@
* @param key the key
*/
V delete(K key);
+
+ /**
+ * @return an iterator over all key value mappings.
+ */
+ Iterator<Map.Entry<K, V>> iterator();
--- End diff --
The KeyValueState can extend `Iterable<Entry<K, V>>` so that the state can
be directly used in foreach constructs.
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