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https://issues.apache.org/jira/browse/SPARK-9644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14701974#comment-14701974
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Davies Liu commented on SPARK-9644:
-----------------------------------
In a benchmark of doing aggregation on a decimal column (with precision > 18),
this optimization only contribute 3% to end-to-end runtime, so I will revert
this optimization to make it portable. Thanks, [~robbinspg]!
> Support update DecimalType with precision > 18 in UnsafeRow
> -----------------------------------------------------------
>
> Key: SPARK-9644
> URL: https://issues.apache.org/jira/browse/SPARK-9644
> Project: Spark
> Issue Type: Improvement
> Affects Versions: 1.5.0
> Reporter: Davies Liu
> Assignee: Davies Liu
> Priority: Critical
> Fix For: 1.5.0
>
>
> Currently, we don't support using DecimalType with precision > 18 in new
> unsafe aggregation, it's good to support it.
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