xdmp:spawn takes a priority option:
xdmp:spawn(
"/foo.xqy",
(),
<options xmlns="xdmp:eval">
<priority>higher</priority>
</options>
)
When you spawn a module with higher priority, it is put into a separate task
server queue. Essentially there are two queues, the normal priority one and the
higher priority one. CPF typically executes as normal priority.
--
Dave Cassel
Developer Community Manager
MarkLogic Corporation<http://www.marklogic.com/>
Cell: +1-484-798-8720
From: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Reply-To: MarkLogic Developer Discussion
<[email protected]<mailto:[email protected]>>
Date: Monday, November 17, 2014 at 3:06 AM
To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Cc: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: Re: [MarkLogic Dev General] Task Server priority
Hi Ashish,
You can place a check in your pipe-line respective x-query code. If your xquery
module’s query is running in task server then hold your pipe-line xquery to
execute. Once module’s query done then you can execute your pipe-line’s query.
Example :
if
(xdmp:server-status(xdmp:host(),xdmp:server("TaskServer"))//*:request-statuses/*:request-status/*:request-text
= "/modules/highest-priority-query.xqy")
then "true"
else "false"
You can place this check in your pipe-line xquery code and call a recursive
function(with some time-interval) which check this condition, if this function
get “false” then execute your pipe-line xquery code.
Regards,
Asit Nautiyal
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]] On Behalf Of Ashish Bhardwaj
Sent: Monday, November 17, 2014 2:25 AM
To: MarkLogic Developer Discussion
Subject: [MarkLogic Dev General] Task Server priority
Hi,
We have some CPF pipelines configured which may have thousands of tasks queued
for task-server. Now, we want some process to happen which we do by spawning a
new Xquery module with highest priority.
How can we make sure that the newly spawned task is picked before the tasks
spawned by CPF.
Regards,
Ashish
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