[HIVE-26529] Iceberg: Fix VectorizedSupport support for DECIMAL_64 in HiveIcebergInputFormat.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-2
• Component/s: HiveServer2, Iceberg integration
• Labels: perfomance pull-request-available
• Assignee: Ayush Saxena
• Reporter: Rajesh Balamohan
• Created: 09/Sep/22 06:23
• Updated: 16/Nov/22 13:50
• Resolved: 30/Sep/22 09:18

Description

For supporting vectored reads in parquet, DECIMAL_64 support in ORC has been disabled in HiveIcebergInputFormat. This causes regressions in queries.

https://github.com/apache/hive/blob/master/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergInputFormat.java#L182

It will be good to restore DECIMAL_64 support in iceberg input format.

 

Issue Links

• links to: GitHub Pull Request #3607