merge two accumulable objects together
merge two accumulable objects together
Normally, a user will not want to use this version, but will instead call +=
.
the other Accumulable that will get merged with this
add more data to this accumulator / accumulable
add more data to this accumulator / accumulable
the data to add
Get the current value of this accumulator from within a task.
Get the current value of this accumulator from within a task.
This is NOT the global value of the accumulator. To get the global value after a
completed operation on the dataset, call value
.
The typical use of this method is to directly mutate the local value, eg., to add an element to a Set.