Github user zuyu commented on a diff in the pull request:
https://github.com/apache/incubator-quickstep/pull/171#discussion_r98385758
--- Diff: relational_operators/HashJoinOperator.cpp ---
@@ -20,6 +20,7 @@
#include "relational_operators/HashJoinOperator.hpp"
#include <algorithm>
+#include <map>
--- End diff --
Could you please point out the location of using `map` in this file? I
could not find it.
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