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Commit d4028de9 authored by Ryan Blue's avatar Ryan Blue Committed by Yin Huai
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[SPARK-18368][SQL] Fix regexp replace when serialized 

## What changes were proposed in this pull request?

This makes the result value both transient and lazy, so that if the RegExpReplace object is initialized then serialized, `result: StringBuffer` will be correctly initialized.

## How was this patch tested?

* Verified that this patch fixed the query that found the bug.
* Added a test case that fails without the fix.

Author: Ryan Blue <blue@apache.org>

Closes #15834 from rdblue/SPARK-18368-fix-regexp-replace.
parent 47636618
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