Most of the query engine components can be edited in the
query-engine.properties file. You can manage the query engine using the following properties.
For information on editing configuration files, see Edit a Composer Configuration File.
|Access log file size (in MB)
|Error log file size (in MB)
|General log file size (in MB)
|Websocket log file size (in MB)
|Sets the host IP address for Syslog server message logging.
|Sets the syslog log level for messages logged to the Syslog server. The following options are available for this property: TRACE, DEBUG, INFO, WARN, ERROR. and OFF.
|Enables detailed tracing of HTTP request
|The distributed tracing request rate percentage. Valid values are between 0 to 1.0, where 0 disables tracing and 1.0 indicates tracing 100% of requests.
|General Microservice Configuration for Jetty Web Server
|Number of threads to serve the HTTP & WebSocket clients
|Idle time (in milliseconds) that allows the WebSocket to be still valid
|Buffer size (in bytes) for the WebSocket message
|Max size (in bytes) of a message that could be sent over the query engine WebSocket
|REST/WebSocket microservice port
|Defines whether the REST/WS API should use SSL
|Path to the file with the keystore
|Indicates whether or not graceful shutdown processing should occur. Valid values are
true (perform graceful shutdown processing) or
false (do not perform graceful shutdown processing).
|Specifies how long (in seconds) a query engine instance will wait to allow clients to receive the information that it is out of service.
|The maximum number of seconds that a query engine instance will wait for the number of its active tasks to reach zero. When this time has elapsed, all remaining active WebSockets serving in-flight queries are closed and then the query engine instance will stop.
|Enables and disables the query engine validation of multivalue fields in a derived field. By disabling (set the value to
false) this functionality, any custom metrics that you may have created in earlier versions of Composer that are aggregations of multivalue fields will produce valid values.
|The maximum amount of time in which groups can be generated by the Include Blanks function. For information on even time intervals, see Even Time Intervals.
The maximum number of rows that can be processed during a single query. The value specified must be at least slightly greater than the value for the
When a query exceeds the limit set by this property, a
|The maximum number of records that can be fused from a single data source.
|Enables or disables Data Sharpening. Set this property to
true to enable Data Sharpening; set it to
false to disable it.
|The maximum number of Data Sharpening requests that can be generated by the sharpening process.
|Defines how many first samples are skipped before visualizing the result of sharpening
|Histogram max bucket count