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Commit c110614b authored by Cheng Lian's avatar Cheng Lian Committed by Michael Armbrust
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[SPARK-3448][SQL] Check for null in SpecificMutableRow.update

`SpecificMutableRow.update` doesn't check for null, and breaks existing `MutableRow` contract.

The tricky part here is that for performance considerations, the `update` method of all subclasses of `MutableValue` doesn't check for null and sets the null bit to false.

Author: Cheng Lian <lian.cs.zju@gmail.com>

Closes #2325 from liancheng/check-for-null and squashes the following commits:

9366c44 [Cheng Lian] Check for null in SpecificMutableRow.update
parent 07ee4a28
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