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Previous versions of Elasticsearch permitted unquoted JSON field names even though this is against the JSON spec. This leniency was disabled by default in the 5.x series of Elasticsearch but a backwards compatibility layer was added via a system property with the intention of removing this layer in 6.0.0. This commit removes this backwards compatibility layer. Relates #20388
10 lines
402 B
Plaintext
10 lines
402 B
Plaintext
[[breaking_60_rest_changes]]
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=== REST changes
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==== Unquoted JSON
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In previous versions of Elasticsearch, JSON documents were allowed to contain unquoted field names.
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This feature was removed in the 5.x series, but a backwards-compability layer was added via the
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system property `elasticsearch.json.allow_unquoted_field_names`. This backwards-compability layer
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has been removed in Elasticsearch 6.0.0.
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