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https://issues.apache.org/jira/browse/HIVE-6243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Hanson updated HIVE-6243:
------------------------------
Attachment: HIVE-6243.01.patch
Modified Decimal128.divideDestructive to use HiveDecimal division. This is slow
but fixes the bug in the existing divide method. It also provides the same
rounding behavior has HiveDecimal for consistency between row-mode and
vectorized execution.
At some point in the future, another JIRA can be done to both fix the divide
error in the original Decimal128.divideDestructive() and make it use the same
rounding behavior as the current HiveDecimal.
> error in high-precision division for Decimal128
> -----------------------------------------------
>
> Key: HIVE-6243
> URL: https://issues.apache.org/jira/browse/HIVE-6243
> Project: Hive
> Issue Type: Sub-task
> Reporter: Eric Hanson
> Attachments: HIVE-6243.01.patch, divide-error.01.patch
>
>
> a = 213474114411690
> b = 5062120663
> a * b = 1080631725579042037750470
> (a * b) / b ==>
> actual: 251599050984618
> expected: 213474114411690
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