[FLINK-18299][json] Fix the non SQL standard timestamp format in JSON format


The current timestamp format in JSON format is not SQL standard which uses RFC-3339. This commit changes the default behavior to parse/generate timestamp using SQL standard. Besides, it introduces an option "json.timestamp-format.standard" to have the ability to fallback to ISO standard. 

This closes #12661
2 files changed
tree: e57daa0f8706c3e55c2516ac4fe9798636b252f0
  1. flink-connectors/
  2. .asf.yaml
  3. README.md
README.md

flink-connector-elasticsearch