alkis commented on code in PR #40301:
URL: https://github.com/apache/spark/pull/40301#discussion_r1130795171
##########
core/src/main/scala/org/apache/spark/util/Utils.scala:
##########
@@ -1305,41 +1305,30 @@ private[spark] object Utils extends Logging {
(JavaUtils.byteStringAsBytes(str) / 1024 / 1024).toInt
}
+ private[this] val siByteSizes =
+ Array(1L << 60, 1L << 50, 1L << 40, 1L << 30, 1L << 20, 1L << 10, 1)
+ private[this] val siByteSuffixes =
+ Array("EiB", "PiB", "TiB", "GiB", "MiB", "KiB", "B")
/**
* Convert a quantity in bytes to a human-readable string such as "4.0 MiB".
*/
- def bytesToString(size: Long): String = bytesToString(BigInt(size))
+ def bytesToString(size: Long): String = {
+ var i = 0
+ while (i < siByteSizes.length - 1 && size < 2 * siByteSizes(i)) i += 1
+ "%.1f %s".formatLocal(Locale.US, size.toDouble / siByteSizes(i),
siByteSuffixes(i))
+ }
def bytesToString(size: BigInt): String = {
val EiB = 1L << 60
- val PiB = 1L << 50
- val TiB = 1L << 40
- val GiB = 1L << 30
- val MiB = 1L << 20
- val KiB = 1L << 10
-
- if (size >= BigInt(1L << 11) * EiB) {
+ if (size.isValidLong) {
+ // Common case, most sizes fit in 64 bits and all ops on BigInt are
order(s) of magnitude
+ // slower than Long/Double.
+ bytesToString(size.toLong)
+ } else if (size < BigInt(2000) * EiB) {
Review Comment:
Changed it back to match.
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