Recent Changes

The following changes were made to reflect new features for the v2.4 release:

•	A new configuration parameter secondary_dbhost allows failover to a secondary host or list of hosts when all hosts in the primary list, specified by dbhost, are unreachable.

•	A new command-line parameter -param_override_filename allows parameter overrides to be placed in a separate file instead of modifying doradus.yaml directly.

•	Tenant management has been enhanced to support user-specific permissions.

•	Doradus can be hosted as an Apache Tomcat application, using it to handle the REST API. Documentation has been added to describe the building and use of the doradus-tomcat project.

•	A new parameter has been added to allow fine-tuning of OLAP compression overhead: olap_compression_level.

•	A new parameter has been added to allow use of multiple threads in multi-shard OLAP queries: olap_search_threads.

•	A new GET /_config command retrieves the Doradus server’s current version and configuration parameters.

•	A new GET /_dump command returns a snapshot stack trace of all current Doradus server threads.

•	A new GET /_logs command returns the most recent logs recorded in the Doradus server’s MemoryAppender, which typically contains DEBUG log entries not present in the file log.