Github user arunmahadevan commented on a diff in the pull request:
https://github.com/apache/storm/pull/1470#discussion_r66785298
--- Diff: storm-core/src/jvm/org/apache/storm/state/KeyValueState.java ---
@@ -45,4 +45,11 @@
* @return the value or defaultValue if no mapping is found
*/
V get(K key, V defaultValue);
+
+ /**
+ * Deletes the value mapped to the key, if there is any
+ *
+ * @param key the key
+ */
+ void delete(K key);
--- End diff --
Could probably be changed to `V remove(K key)` along the lines of
java.util.Map.
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