GitHub user ueshin opened a pull request:
https://github.com/apache/spark/pull/22352
[SPARK-25208][SQL][FOLLOW-UP] Reduce code size.
## What changes were proposed in this pull request?
When casting to decimal type, if `Cast.canNullSafeCastToDecimal()`,
overflow won't happen, so we don't need to check the result of
`Decimal.changePrecision()`.
## How was this patch tested?
Existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ueshin/apache-spark
issues/SPARK-25208/reduce_code_size
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22352.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #22352
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commit ee471261b5c2c963f386728b47f045e2f729d5f2
Author: Takuya UESHIN <ueshin@...>
Date: 2018-09-06T11:28:17Z
Reduce code size.
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