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| author | actuaryzhang <actuaryzhang10@gmail.com> | 2017-02-23 11:12:02 -0800 |
|---|---|---|
| committer | Felix Cheung <felixcheung@apache.org> | 2017-02-23 11:12:02 -0800 |
| commit | 7bf09433f5c5e08154ba106be21fe24f17cd282b (patch) | |
| tree | 41c31f3450f8bfc1d6808a5adc1d4f74c94e70c4 /README.md | |
| parent | 78eae7e67fd5dec0c2d5b18000053ce86cd0f1ae (diff) | |
| download | spark-7bf09433f5c5e08154ba106be21fe24f17cd282b.tar.gz spark-7bf09433f5c5e08154ba106be21fe24f17cd282b.tar.bz2 spark-7bf09433f5c5e08154ba106be21fe24f17cd282b.zip | |
[SPARK-19682][SPARKR] Issue warning (or error) when subset method "[[" takes vector index
## What changes were proposed in this pull request?
The `[[` method is supposed to take a single index and return a column. This is different from base R which takes a vector index. We should check for this and issue warning or error when vector index is supplied (which is very likely given the behavior in base R).
Currently I'm issuing a warning message and just take the first element of the vector index. We could change this to an error it that's better.
## How was this patch tested?
new tests
Author: actuaryzhang <actuaryzhang10@gmail.com>
Closes #17017 from actuaryzhang/sparkRSubsetter.
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