Dominik Dębowczyk created FLINK-39995:
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Summary: Add ISO-8601 timestamp format with explicit timezone
offset support
Key: FLINK-39995
URL: https://issues.apache.org/jira/browse/FLINK-39995
Project: Flink
Issue Type: Improvement
Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
Affects Versions: 1.20.5, 2.2.1, 2.1.2, 1.20.4, 2.1.1, 2.2.0, 1.20.3,
2.1.0, 1.20.2, 1.20.1, 1.20.0
Reporter: Dominik Dębowczyk
h2. Problem
The current {{ISO-8601}} timestamp format option for {{JSON}} is misleading as
it does not support timestamps with explicit timezone offsets (e.g.,
{{{}2026-06-25T09:15:00+00:00{}}}).
The existing {{ISO-8601}} format only handles:
- Timestamps without timezone: {{{}yyyy-MM-ddTHH:mm:ss.s{precision{}}}}
- Timestamps with UTC 'Z' suffix: {{yyyy-MM-ddTHH:mm:ss.s\{precision}Z}}
It cannot parse valid {{ISO-8601}} timestamps with explicit timezone offsets
like {{{}+02:00{}}}, {{{}-05:00{}}}, etc.
h2. Solution
Add a new timestamp format option {{ISO-8601-WITH-OFFSET}} that properly
handles timestamps with explicit timezone offsets in the format:
{{yyyy-MM-ddTHH:mm:ss.s\{precision}±HH:mm}}
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