MarkLogic Server 11.0 Product Documentation

Task Server Configuration Help

The Task Server is an App Server that is used to process requests that have been spawned. Spawned requests can originate from the xdmp:spawn command or from a post-commit trigger action (for example, as the result of a document running through a pipeline in the Content Processing Framework).

• threads specifies the maximum number of App Server threads on each host in the group; the server may also additionally limit threads.
• max time limit specifies the upper bound for any request's time limit. No request may set its time limit (for example with xdmp:set-request-time-limit) higher than this number. The time limit, in turn, is the maximum number of seconds allowed for servicing a query request. The App Server gives up on queries which take longer, and returns an error.
• default time limit specifies the default value for any request's time limit, when otherwise unspecified. A request can change its time limit using xdmp:set-request-time-limit. The time limit is the default number of seconds allowed for servicing a query request.
• max inference size specifies the upper bound for any request's inference size. No request may set its inference size higher than this number. The inference size, in turn, is the maximum amount of memory in megabytes allowed for sem:store performing inference. The App Server gives up on queries which exceed the memory limit, and returns an error.
• default inference size specifies the default value for any request's inference size.
• queue size specifies the maximum number of tasks that are allowed to be kept waiting for processing threads on each host in the group.
• pre-commit trigger limit specifies the maximum number of pre-commit triggers a single statement against this App Server can invoke.
• post-commit trigger depth specifies the maximum depth (how many triggers can cause other triggers to fire, which in turn cause others to fire, and so on) for post-commit triggers that are executed against the Task Server.
• pre-commit trigger depth specifies the maximum depth (how many triggers can cause other triggers to fire, which in turn cause others to fire, and so on) for pre-commit triggers that are executed against this App Server.
• file log level specifies the minimum log level for log messages sent to the MarkLogic Server log file (ErrorLog.txt).
• opsdirector log level specifies the minimum log level of the current server for application log messages sent to Ops Director. This item is greyed out if the cluster is not managed by Ops Director.
• log-errors specifes whether to log uncaught errors for this App Server to the ErrorLog.txt file. This is useful to log exceptions that might occur on an App Server for later debugging.
• debug-allow specifies whether to allow requests against this App Server to be stopped for debugging, using the MarkLogic Server debugging APIs.
• profile-allow specifies whether to allow requests against this App Server to be profiled, using the MarkLogic Server profiling APIs.

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Buttons and Tabs:

• The Status tab displays current information on the Task Server, including the number of tasks waiting in the queue and the number of requests currently running.