[ARROW-14518] [Ruby] ArrayBuilder doesn't work correctly with Decimal

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 9.0.0
• Component/s: Ruby
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/30073
• Assignee: Kouhei Sutou
• Reporter: Kanstantsin Ilchanka
• Created: 29/Oct/21 10:28
• Updated: 11/Jan/23 08:40
• Resolved: 22/Jun/22 23:58

Description

When trying to convert raw data with decimal values to Arrow::Table error received

 

Arrow::Table.new(x: [BigDecimal('1.1')])
ArgumentError: wrong arguments: Arrow::Decimal128ArrayBuilder#initialize(): available signatures: (data_type: interface(Arrow::Decimal128DataType(GArrowDecimal128DataType)))

I guess this is because Decimal128ArrayBuilder expects Decimal128DataType in initialiser, however I'm not sure how to correctly and effectively detect precision and scale from array of BigDecimal

 

Arrow::VERSION
=> "5.0.0"

Issue Links

• links to: GitHub Pull Request #13377