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[SPARK-20691][CORE] Difference between Storage Memory as seen internally and in web UI #18229

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[SPARK-20691][CORE] Difference between Storage Memory as seen internally and in web UI #18229

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mkesselaers Jun 7, 2017
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mkesselaers Jun 7, 2017
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Revert "Changed the calculation of bytesToString towards MebiBytes in…
mkesselaers Jun 7, 2017
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mkesselaers Jun 7, 2017
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4 changes: 2 additions & 2 deletions core/src/main/resources/org/apache/spark/ui/static/utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -40,9 +40,9 @@ function formatDuration(milliseconds) {
function formatBytes(bytes, type) {
if (type !== 'display') return bytes;
if (bytes == 0) return '0.0 B';
var k = 1000;
var k = 1024;
var dm = 1;
var sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
var sizes = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];
var i = Math.floor(Math.log(bytes) / Math.log(k));
return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
}
40 changes: 20 additions & 20 deletions core/src/main/scala/org/apache/spark/util/Utils.scala
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Expand Up @@ -1132,30 +1132,30 @@ private[spark] object Utils extends Logging {
def bytesToString(size: Long): String = bytesToString(BigInt(size))

def bytesToString(size: BigInt): String = {
val EB = 1L << 60
val PB = 1L << 50
val TB = 1L << 40
val GB = 1L << 30
val MB = 1L << 20
val KB = 1L << 10

if (size >= BigInt(1L << 11) * EB) {
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) {
// The number is too large, show it in scientific notation.
BigDecimal(size, new MathContext(3, RoundingMode.HALF_UP)).toString() + " B"
} else {
val (value, unit) = {
if (size >= 2 * EB) {
(BigDecimal(size) / EB, "EB")
} else if (size >= 2 * PB) {
(BigDecimal(size) / PB, "PB")
} else if (size >= 2 * TB) {
(BigDecimal(size) / TB, "TB")
} else if (size >= 2 * GB) {
(BigDecimal(size) / GB, "GB")
} else if (size >= 2 * MB) {
(BigDecimal(size) / MB, "MB")
} else if (size >= 2 * KB) {
(BigDecimal(size) / KB, "KB")
if (size >= 2 * EiB) {
(BigDecimal(size) / EiB, "EiB")
} else if (size >= 2 * PiB) {
(BigDecimal(size) / PiB, "PiB")
} else if (size >= 2 * TiB) {
(BigDecimal(size) / TiB, "TiB")
} else if (size >= 2 * GiB) {
(BigDecimal(size) / GiB, "GiB")
} else if (size >= 2 * MiB) {
(BigDecimal(size) / MiB, "MiB")
} else if (size >= 2 * KiB) {
(BigDecimal(size) / KiB, "KiB")
} else {
(BigDecimal(size), "B")
}
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14 changes: 7 additions & 7 deletions core/src/test/scala/org/apache/spark/util/UtilsSuite.scala
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Expand Up @@ -196,13 +196,13 @@ class UtilsSuite extends SparkFunSuite with ResetSystemProperties with Logging {
test("bytesToString") {
assert(Utils.bytesToString(10) === "10.0 B")
assert(Utils.bytesToString(1500) === "1500.0 B")
assert(Utils.bytesToString(2000000) === "1953.1 KB")
assert(Utils.bytesToString(2097152) === "2.0 MB")
assert(Utils.bytesToString(2306867) === "2.2 MB")
assert(Utils.bytesToString(5368709120L) === "5.0 GB")
assert(Utils.bytesToString(5L * (1L << 40)) === "5.0 TB")
assert(Utils.bytesToString(5L * (1L << 50)) === "5.0 PB")
assert(Utils.bytesToString(5L * (1L << 60)) === "5.0 EB")
assert(Utils.bytesToString(2000000) === "1953.1 KiB")
assert(Utils.bytesToString(2097152) === "2.0 MiB")
assert(Utils.bytesToString(2306867) === "2.2 MiB")
assert(Utils.bytesToString(5368709120L) === "5.0 GiB")
assert(Utils.bytesToString(5L * (1L << 40)) === "5.0 TiB")
assert(Utils.bytesToString(5L * (1L << 50)) === "5.0 PiB")
assert(Utils.bytesToString(5L * (1L << 60)) === "5.0 EiB")
assert(Utils.bytesToString(BigInt(1L << 11) * (1L << 60)) === "2.36E+21 B")
}

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