Client

Added

• Added the X-Elastic-Client-Meta HTTP header and the meta_header parameter for controlling the header (#1473)
• Added ElasticsearchWarning which is raised when the Warning HTTP header is returned from Elasticsearch. ElasticsearchDeprecationWarning is now an alias for this warning type (#1495)

APIs

Async Search

• Added the async_search.status API

Autoscaling

• Added the autoscaling.get_autoscaling_capacity experimental API
• Removed the autoscaling.get_autoscaling_decision experimental API

Cat

• Changed cat.tasks API parameters node_id and parent_task to nodes and parent_task_id

Cluster

• Changed cluster.delete_component_template, cluster.exists_component_template, and cluster.get_component_template,
  cluster.put_component_template APIs from experimental to stable

EQL

• Changed eql.delete, eql.get, eql.search APIs from beta to stable

Indices

• Added indices.migrate_to_data_stream API
• Added indices.promote_data_stream API
• Added expand_wildcards parameter to the indices.delete_data_stream and indices.get_data_stream APIs
• Changed indices.delete_index_template, indices.exists_index_template, indices.get_index_template, indices.put_index_template, indices.simulate_index_template, and indices.simulate_template APIs moved from experimental to stable

Machine Learning

• Added ml.upgrade_job_snapshot API
• Added exclude_generated parameter to ml.get_data_frame_analytics, ml.get_datafeeds, ml.get_jobs, and ml.get_trained_models APIs
• Changed ml.delete_data_frame_analytics, ml.delete_trained_model, ml.explain_data_frame_analytics, ml.get_data_frame_analytics, ml.get_data_frame_analytics_stats, ml.get_trained_models, ml.get_trained_models_stats, ml.put_data_frame_analytics, ml.put_trained_model, ml.start_data_frame_analytics, ml.stop_data_frame_analytics, ml.update_data_frame_analytics APIs from experimental to beta

Rollup

• Added rollup.rollup API

Transform

• Added exclude_generated parameter to transform.get_transform API

Watcher

• Added watcher.query_watches API