apache/arrow-java

`ComplexCopier` is missing support for `Duration` columns

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#558 opened on Jan 24, 2025

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 (2 comments) (0 reactions) (1 assignee)Java (132 forks)auto 404
Type: enhancementhelp wanted

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Description

ComplexCopier does not support Durations:

java.lang.UnsupportedOperationException: DURATION
	at org.apache.arrow.vector.complex.impl.ComplexCopier.getListWriterForReader(ComplexCopier.java:824)
	at org.apache.arrow.vector.complex.impl.ComplexCopier.writeValue(ComplexCopier.java:93)
	at org.apache.arrow.vector.complex.impl.ComplexCopier.copy(ComplexCopier.java:76)
	at org.apache.arrow.vector.complex.ListVector.copyFrom(ListVector.java:409)

Contributor guide

Research direction
Add support for Duration columns in ComplexCopier by handling the DURATION type in the writeValue and getListWriterForReader methods. Study existing implementations for other types and follow the same pattern.
Tech stack
java
Domain
backenddata
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaApache Arrow
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60