1.33.0 (Pending)

Minor behavior changes

Changes that may cause incompatibilities for some users, but should not for most

access_log: New implementation of the JSON formatter will be enabled by default. The sort_properties field will be ignored in the new implementation because the new implementation always sorts properties. And the new implementation will always keep the value type in the JSON output. For example, the duration field will always be rendered as a number instead of a string. This behavior change could be disabled temporarily by setting the runtime envoy.reloadable_features.logging_with_fast_json_formatter to false.
formatter: The NaN and Infinity values of float will be serialized to null and "inf" respectively in the metadata (DYNAMIC_METADATA, CLUSTER_METADATA, etc.) formatter.

Normally occurs at the end of the deprecation period

upstream: Removed runtime flag envoy.restart_features.allow_client_socket_creation_failure and legacy code paths.