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https://issues.apache.org/jira/browse/HIVE-9385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16172987#comment-16172987
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Gopalakrishnan commented on HIVE-9385:
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hi,
we are getting the same issue in hive 1.2.1.
My tables is orc table and partitioned. calculating sum on a double field is
not giving accurate value.
expected value is 2.7115388423211*4*E14 but sum value comes as
2.7115388423211*378*E14
I do not see any round off issue also, I have tried by typecasting it to
decimal prior calculating sum. but the getting incorrect result.
is this is issue still exist in 1.2.1
> Sum a Double using an ORC table
> -------------------------------
>
> Key: HIVE-9385
> URL: https://issues.apache.org/jira/browse/HIVE-9385
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.1
> Environment: HDP 2.x, Hive
> Reporter: Nick Martin
> Priority: Minor
>
> I’m storing a sales amount column as a double in an ORC table and when I do:
> {code:sql}
> select sum(x) from sometable
> {code}
> I get a value like {{4.79165141174808E9}}
> A visual inspection of the column values reveals no glaring anomalies…all
> looks pretty normal.
> If I do the same thing in a textfile table I get a perfectly fine aggregation
> of the double field.
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