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Implement 'weights' and 'axis' in sample at DataFrame and Series #1893

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Implement 'weights' and 'axis' in sample at DataFrame and Series #1893

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Commits on Nov 6, 2020

  1. support sample

    chenkai02 committed Nov 6, 2020
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  2. Support the remaining parameters of the sample function of DataFrame,… 

    … such as n, axis, weights.

Now there are two unsupported situations:
1.does not support axis=1
2.If the value of the frac parameter > 1, the weights parameter is not supported
    chenkai02 committed Nov 6, 2020
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  3. Merge branch 'sample-dev' of https://github.com/chi2liu/koalas into s… 

    …ample-dev
    chenkai02 committed Nov 6, 2020
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  4. Merge branch 'sample-dev' of https://github.com/chi2liu/koalas into s… 

    …ample-dev
    chenkai02 committed Nov 6, 2020
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  5. Merge branch 'sample-dev' of https://github.com/chi2liu/koalas into s… 

    …ample-dev
    chenkai02 committed Nov 6, 2020
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Commits on Nov 12, 2020

  1. 1. For performance considerations, the weights parameter does not sup… 

    …port str and series temporarily

2. Optimize part of the code based on review comments.
    chenkai02 committed Nov 12, 2020
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