Github user arunmahadevan commented on a diff in the pull request:
https://github.com/apache/storm/pull/1706#discussion_r80185268
--- Diff:
external/sql/storm-sql-runtime/src/test/org/apache/storm/sql/TestUtils.java ---
@@ -60,6 +62,25 @@ public static String result(String accumulator) {
}
+ public static class TopN {
+ public static PriorityQueue<Integer> init() {
+ return new PriorityQueue<>();
+ }
+ public static PriorityQueue<Integer> add(PriorityQueue<Integer>
accumulator, Integer n, Integer val) {
+ if (accumulator.size() >= n) {
--- End diff --
yes, it will throw NPE if n is 0, since it tries to peek from empty queue.
will address this.
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