RFR: 8279361: Error in documentation of third Stream.reduce method

[Paul Sandoz]

On Wed, 28 Sep 2022 15:36:50 GMT, Viktor Klang <duke at openjdk.org> wrote:

> This JavaDoc change attempts to shine some light on the `combiner`-function as it relates to the third variant of `Stream.reduce` since it according to the bug submission in JBS can be confusing that the `combiner` is not mentioned in the code example in the documentation.

The current JavaDoc is not wrong :-) (same in other places). I think what you propose may not add much clarity (given the complexities of reasoning about parallelism).

We could add something after "but is not constrained to execute sequentially." e.g. 

"
Parallel execution may result in intermediate results computed as if by the code above. Such results are combined using the combining function to produce the final result."
"

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PR: https://git.openjdk.org/jdk/pull/10469