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Posted to dev@knox.apache.org by GitBox <gi...@apache.org> on 2020/03/27 00:21:53 UTC
[GitHub] [knox] lmccay opened a new pull request #302: KNOX-2310
lmccay opened a new pull request #302: KNOX-2310
URL: https://github.com/apache/knox/pull/302
(It is very **important** that you created an Apache Knox JIRA for this change and that the PR title/commit message includes the Apache Knox JIRA ID!)
## What changes were proposed in this pull request?
A simple method for producing a meaningful mathematical report of a dataset would allow the user to quickly determine some basic metrics of a dataset.
For instance, given a dataset with time series data across columns, an aggregation of:
min
max
mean
median
mode
sum
for specific columns would provide a way to visualize the changes across time.
knox:000> test.aggregate() columns "A,B,C" functions "min, max, mean, median, mode,sum"
===> +----------+----------------------+----------+----------+
| | A | B | C |
+----------+----------------------+----------+----------+
| min | 100.0 | 200.0 | 300.0 |
| max | 200.0 | 400.0 | 500.0 |
| mean | 166.66666666666666 | 300.0 | 400.0 |
| median | 200.0 | 300.0 | 400.0 |
| mode | 200.0 | 200.0 | 300.0 |
| sum | 500.0 | 900.0 | 1200.0 |
+----------+----------------------+----------+----------+
## How was this patch tested?
Added new unit test and ran existing unit tests.
Tested manually in KnoxShell.
(Please explain how this patch was tested. For instance: running automated unit/integration tests, manual tests. Please write down your test steps as detailed as possible)
(If this patch involves UI changes, please attach a screen-shot; otherwise, remove this)
Please review [Knox Contributing Process](https://cwiki.apache.org/confluence/display/KNOX/Contribution+Process#ContributionProcess-GithubWorkflow) before opening a pull request.
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[GitHub] [knox] lmccay merged pull request #302: KNOX-2310 - Add aggregate
method to KnoxShellTable
Posted by GitBox <gi...@apache.org>.
lmccay merged pull request #302: KNOX-2310 - Add aggregate method to KnoxShellTable
URL: https://github.com/apache/knox/pull/302
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