Github user asfgit closed the pull request at:
https://github.com/apache/incubator-beam/pull/1366
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GitHub user scwhittle opened a pull request:
https://github.com/apache/incubator-beam/pull/1366
[BEAM-986] Improve ReduceFnRunner prefetching
Hi @kennknowles , can you please take a look?
This refactoring ensures that for batches of elements or timers we have at
most 2
