Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/15084#discussion_r78716318
--- Diff: core/src/main/scala/org/apache/spark/util/collection/BitSet.scala
---
@@ -58,6 +58,20 @@ class BitSet(numBits: Int) extends Serializable {
}
/**
+ * Clear all the bits up to a given index
+ */
+ def clearUntil(bitIndex: Int) {
+ val wordIndex = bitIndex >> 6 // divide by 64
+ var i = 0
+ while(i < wordIndex) { words(i) = 0; i += 1 }
--- End diff --
java.util.Arrays.fill can do this in one line. It won't be faster but could
be a tiny bit cleaner. Up to your taste whether you want to change this and
other occurrences in the file.
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