Jonathan Court created KAFKA-7948:
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Summary: Feature to enable json field order retention in the
JsonConverter
Key: KAFKA-7948
URL: https://issues.apache.org/jira/browse/KAFKA-7948
Project: Kafka
Issue Type: New Feature
Components: config, KafkaConnect
Affects Versions: 2.1.1
Reporter: Jonathan Court
We need to maintain the order of fields in json structures that pass through
kafka connect. To achieve this a new configuration item has been added to the
JsonConverter to engage the retention of field order in jsons between the input
and output.
While the json spec doesn't require fields to be ordered it is required in
instances where the parsers of json are primitive and difficult to correct -
i.e. our mainframe.
The new config item is:
{code:java}
json.field.order = none|retained{code}
where the default is none and maintains the current functionality, and the
option of 'retained' causes the underlying converter to use a LinkedHashMap in
place of a HashMap and keeps the json fields in the order they're received
during processing.
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