Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/6696#discussion_r32368999
--- Diff: core/src/main/scala/org/apache/spark/util/collection/BitSet.scala
---
@@ -32,6 +34,10 @@ class BitSet(numBits: Int) extends Serializable {
*/
def capacity: Int = numWords * 64
+ def clear(): Unit = {
+ util.Arrays.fill(words, 0L)
--- End diff --
Hm, sorry, I take that back. There is no equivalent in Scala that I can
find, that sets an existing array's values. Can I suggest thought that
importing just `java.util` might look confusing, so either just import it
(there is no Scala `Arrays` to mix it up with) or if this is just one usage,
write `java.util.Arrays.fill(...)`
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