[ARROW-9479] [JS] Table.from fails for zero-item Lists, FixedSizeLists, Maps. ditto Table.empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.17.1
• Fix Version/s: 3.0.0
• Component/s: JavaScript
• Labels: pull-request-available
• Flags: Patch
• External issue URL: https://github.com/apache/arrow/issues/25550
• Assignee: Unassigned
• Reporter: Nicholas Roberts
• Created: 15/Jul/20 14:04
• Updated: 11/Jan/23 08:07
• Resolved: 15/Oct/20 18:43

Description

deserializing zero-item tables (as generated by Table.empty or, in this case, pyarrow.Schema.serialize) with a schema containing a List, FixedList or Map fail due to an unconditional 

new Data(/* preceding parameters */ buffers, [childData])

statement, the childData parameter resolves to  [undefined] rather than the desired [].

 See https://github.com/apache/arrow/pull/7771 for further details.

 

Issue Links

• links to: GitHub Pull Request #7771