[jira] [Updated] (HIVE-23561) FIX Arrow Decimal serialization for VectorRowBatches

["Panagiotis Garefalakis (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-23561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Panagiotis Garefalakis updated HIVE-23561:
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    Description: 
Arrow Serializer does not properly handle Decimal primitive values when selected array is used.
In more detail, decimalValueSetter should be setting the value at *arrowIndex[i]* as the value of the hiveVector at *index[j]*, however currently its using the _same_ index!
https://github.com/apache/hive/blob/eac25e711ea750bc52f41da7ed3c32bfe36d4f67/ql/src/java/org/apache/hadoop/hive/ql/io/arrow/Serializer.java#L926

This works fine for cases where i == j (selected is not used) but causes issues when i != j.
This ticket fixes this incosistency and adds tests with selected indexes for all supported types

> FIX Arrow Decimal serialization for VectorRowBatches
> ----------------------------------------------------
>
>                 Key: HIVE-23561
>                 URL: https://issues.apache.org/jira/browse/HIVE-23561
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Panagiotis Garefalakis
>            Assignee: Panagiotis Garefalakis
>            Priority: Major
>
> Arrow Serializer does not properly handle Decimal primitive values when selected array is used.
> In more detail, decimalValueSetter should be setting the value at *arrowIndex[i]* as the value of the hiveVector at *index[j]*, however currently its using the _same_ index!
> https://github.com/apache/hive/blob/eac25e711ea750bc52f41da7ed3c32bfe36d4f67/ql/src/java/org/apache/hadoop/hive/ql/io/arrow/Serializer.java#L926
> This works fine for cases where i == j (selected is not used) but causes issues when i != j.
> This ticket fixes this incosistency and adds tests with selected indexes for all supported types



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