The forum will be down for maintenance over the weekend of August 18-20, 2017. The forum will be shut down on the evening (EDT) of Friday, August 18. Downtime is unknown but may be up to two days. The forum will be restarted as soon as maintenance is complete.

If a parent connection repeatedly runs a query that uses intra-query parallelism, several INT: EXCHANGE child connections may be spawned and then dropped each time the query runs.

This is not easy to observe while the loop is running since the INT: EXCHANGE connections all look the same... except for the fact the connection numbers grow by leaps and bounds, and there may be gaps when short-lived child connections go completely unnoticed.

Is there a cumulative count of child connections available? Such a counter might help to highlight an abuse of intra-query parallelism.

(if not, consider this a request).

asked 31 Mar '16, 15:59

Breck%20Carter's gravatar image

Breck Carter
26.6k433604877
accept rate: 21%

edited 31 Mar '16, 16:17

Mark%20Culp's gravatar image

Mark Culp
23.2k9132273


There is no connection counter that tracks this information currently. Enhancement request noted.

Thanks

permanent link

answered 31 Mar '16, 16:17

Mark%20Culp's gravatar image

Mark Culp
23.2k9132273
accept rate: 40%

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:

×242
×5

question asked: 31 Mar '16, 15:59

question was seen: 277 times

last updated: 31 Mar '16, 16:17