Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5171#discussion_r27067256
--- Diff:
core/src/main/scala/org/apache/spark/util/collection/OpenHashMap.scala ---
@@ -53,6 +53,15 @@ class OpenHashMap[K : ClassTag, @specialized(Long, Int,
Double) V: ClassTag](
override def size: Int = if (haveNullValue) _keySet.size + 1 else
_keySet.size
+ /** Tests whether this map contains a binding for a key. */
+ def contains(k: K): Boolean = {
+ if (k == null) {
+ haveNullValue
+ } else {
+ _keySet.getPos(k) >= 0
--- End diff --
i think the contract is getPos(k) != INVALID_POS
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