GitHub user mtustin-handy opened a pull request:
https://github.com/apache/spark/pull/11982
[SPARK-14163][CORE] SumEvaluator and countApprox cannot reliably handle
RDDs of size 1
## What changes were proposed in this pull request?
This special cases 0 and 1 counts to avoid passing 0 degrees of freedom.
## How was this patch tested?
Tests run successfully.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mtustin-handy/spark SPARK-14163
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11982.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 #11982
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commit 3b26826f32b95f661991d1dc08b9a087a8779f63
Author: Marcin Tustin <[email protected]>
Date: 2016-03-26T23:32:23Z
Use confidence when count is 1.
Work with me in New York?
https://www.handy.com/careers/73115?gh_jid=73115&gh_src=o5qcxn
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