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7e5058037b
With this commit we enable the Jackson feature 'STRICT_DUPLICATE_DETECTION' by default. This ensures that JSON keys are always unique. While this has a performance impact, benchmarking has indicated that the typical drop in indexing throughput is around 1 - 2%. As a last resort, we allow users to still disable strict duplicate checks by setting `-Des.json.strict_duplicate_detection=false` which is intentionally undocumented. Closes #19614
30 lines
1.0 KiB
Plaintext
30 lines
1.0 KiB
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-compatibility layer was added via the
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system property `elasticsearch.json.allow_unquoted_field_names`. This backwards-compatibility layer
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has been removed in Elasticsearch 6.0.0.
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==== Duplicate Keys in JSON
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In previous versions of Elasticsearch, JSON documents were allowed to contain duplicate keys. Elasticsearch 6.0.0
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enforces that all keys are unique.
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==== Analyze API changes
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The deprecated request parameters and plain text in request body has been removed. Define parameters in request body.
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==== Indices exists API
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The `ignore_unavailable` and `allow_no_indices` options are no longer accepted
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as they could cause undesired results when their values differed from their
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defaults.
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=== `timestamp` and `ttl` in index requests
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`timestamp` and `ttl` are not accepted anymore as parameters of index/update
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requests.
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