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Commit 7a8a81d7 authored by WeichenXu's avatar WeichenXu Committed by Sean Owen
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[SPARK-17363][ML][MLLIB] fix MultivariantOnlineSummerizer.numNonZeros 

## What changes were proposed in this pull request?

fix `MultivariantOnlineSummerizer.numNonZeros` method,
return `nnz` array, instead of  `weightSum` array

## How was this patch tested?

Existing test.

Author: WeichenXu <WeichenXu123@outlook.com>

Closes #14923 from WeichenXu123/fix_MultivariantOnlineSummerizer_numNonZeros.
parent d2fde6b7
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