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From "Remus Rusanu (JIRA)" <j...@apache.org>
Subject [jira] [Work started] (HIVE-6594) UnsignedInt128 addition does not increase internal int array count resulting in corrupted values during serialization
Date Sat, 08 Mar 2014 13:34:43 GMT

     [ https://issues.apache.org/jira/browse/HIVE-6594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on HIVE-6594 started by Remus Rusanu.

> UnsignedInt128 addition does not increase internal int array count resulting in corrupted
values during serialization
> ---------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-6594
>                 URL: https://issues.apache.org/jira/browse/HIVE-6594
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.13.0
>            Reporter: Remus Rusanu
>            Assignee: Remus Rusanu
>         Attachments: HIVE-6594.1.patch
>
>
> Discovered this while investigating why my fix for HIVE-6222 produced diffs. I discovered
that Decimal128.addDestructive does not adjust the internal count when an the number of relevant
ints increases. Since this count i use din the fast HiveDecimal conversion code, the results
are off. 
> The root cause is UnsignedDecimal128.differenceInternal does not do an updateCount()
on the result.



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