apache/iceberg

[feature request] Add scheduled refresh for storage credentials held by ADLSFileIO

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#15852 opened on Apr 1, 2026

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 (1 comment) (0 reactions) (0 assignees)Java (5,146 stars) (1,915 forks)batch import
good first issueimprovement

Description

Feature Request / Improvement

Similar to https://github.com/apache/iceberg/pull/15678 and https://github.com/apache/iceberg/pull/15696 but for ADLSFileIO

Query engine

None

Willingness to contribute

  • I can contribute this improvement/feature independently
  • I would be willing to contribute this improvement/feature with guidance from the Iceberg community
  • I cannot contribute this improvement/feature at this time

Contributor guide

Tech stack
java
Domain
backendcloud
Issue type
feature
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.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
JavaAzure ADLS basicsUnderstanding of Iceberg credential refresh
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
The issue requests a scheduled refresh for storage credentials in ADLSFileIO, similar to existing implementations in S3FileIO (PR #15678) and GCSFileIO (PR #15696). To implement this, first study those PRs to understand the pattern: they likely add a scheduled executor or similar mechanism to refresh credentials before expiration. The relevant file is azure/src/main/java/org/apache/iceberg/azure/adlsv2/ADLSFileIO.java. Investigate the Azure SDK's credential types and how they handle renewal. The community may have guidelines for this feature; check comments on the issue for any additional clarification.