tillrohrmann commented on a change in pull request #10785: [FLINK-15375][core]
Improve MemorySize to print / parse with better readability.
URL: https://github.com/apache/flink/pull/10785#discussion_r367995904
##########
File path:
flink-core/src/main/java/org/apache/flink/configuration/MemorySize.java
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@@ -158,6 +162,38 @@ private String formatToString() {
highestIntegerUnit.getUnits()[1]);
}
+ public String toHumanReadableString() {
+ if (humanReadableStr == null) {
+ humanReadableStr = formatToHumanReadableString();
+ }
+
+ return humanReadableStr;
+ }
+
+ private String formatToHumanReadableString() {
+ MemoryUnit highestUnit = IntStream.range(0,
ORDERED_UNITS.size())
+ .sequential()
+ .filter(idx -> bytes >
ORDERED_UNITS.get(idx).getMultiplier())
+ .boxed()
+ .max(Comparator.naturalOrder())
+ .map(idx -> ORDERED_UNITS.get(idx))
+ .orElse(BYTES);
+
+ if (highestUnit == BYTES) {
+ return String.format(
+ "%d %s",
+ bytes,
+ BYTES.getUnits()[1]);
+ } else {
+ double approximate = 1.0 * bytes /
highestUnit.getMultiplier();
+ return String.format(
+ "%.3f%s (%d)",
Review comment:
Should we add `%.3f%s (%d bytes)`?
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