GitHub user robertwb opened a pull request:
https://github.com/apache/incubator-beam/pull/88
Optimize the Count CombineFn
Previously the accumulator was stored as a Long. This uses
a singleton long[] to avoid the boxing and unboxing on every
increment.
This required changing the Coder (the format actually remains
the same, but we have no way of declaring that) so is not
backwards compatible with reload.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/robertwb/incubator-beam count
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-beam/pull/88.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #88
----
commit f2bb6e86bfd71f5cda4f574c6bedfaeff172291a
Author: Robert Bradshaw <[email protected]>
Date: 2016-03-29T19:28:13Z
Optimize the Count CombineFn
Previously the accumulator was stored as a Long. This uses
a singleton long[] to avoid the boxing and unboxing on every
increment.
This required changing the Coder (the format actually remains
the same, but we have no way of declaring that) so is not
backwards compatible with reload.
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