xintongsong commented on a change in pull request #9760: [FLINK-13982][runtime]
Implement memory calculation logics
URL: https://github.com/apache/flink/pull/9760#discussion_r329341309
##########
File path:
flink-core/src/main/java/org/apache/flink/configuration/MemorySize.java
##########
@@ -115,6 +115,27 @@ public String toString() {
return bytes + " bytes";
}
+ //
------------------------------------------------------------------------
+ // Calculations
+ //
------------------------------------------------------------------------
+
+ public MemorySize add(MemorySize that) {
+ return new MemorySize(Math.addExact(this.bytes, that.bytes));
+ }
+
+ public MemorySize subtract(MemorySize that) {
+ return new MemorySize(Math.subtractExact(this.bytes,
that.bytes));
+ }
+
+ public MemorySize multiply(double multiplier) {
+ checkArgument(multiplier >= 0, "multiplier must be >= 0");
+ double product = this.bytes * multiplier;
Review comment:
True, the error can be up to 9 bits and thus should not be ignored. I think
it's a good idea to use BigDecimal for safety.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
