Breaking changes in 5.3

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Packaging changes

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Logging configuration

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Previously Elasticsearch exposed a single system property (es.logs) that included the absolute path to the configured logs directory, and the prefix of the filenames used for the various logging files (the main log file, the deprecation log, and the slow logs). This property has been replaced in favor of three properties:

  • es.logs.base_path: the absolute path to the configured logs directory
  • es.logs.cluster_name: the default prefix of the filenames used for the various logging files
  • es.logs.node_name: exposed if node.name is configured for inclusion in the filenames of the various logging files (if you prefer)

The property es.logs is deprecated and will be removed in Elasticsearch 6.0.0.

Use of Netty 3 is deprecated

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Usage of Netty 3 for transport (transport.type=netty3) or HTTP (http.type=netty3) is deprecated and will be removed in Elasticsearch 6.0.0.

Settings changes

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Lenient boolean representations are deprecated

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Usage of any value other than false, "false", true and "true" in boolean settings deprecated.

REST API changes

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Lenient boolean representations are deprecated

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Usage of any value other than false, "false", true and "true" for boolean request parameters and boolean properties in the body of REST API calls is deprecated.

Mapping changes

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Lenient boolean representations are deprecated

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Usage of any value other than false, "false", true and "true" for boolean values in mappings is deprecated.