TCS: Inspect and cancel in-flight queries

[lenkis]

Related dev. resources:

• Release card for TCS 0.19: https://jira.vk.team/browse/PRODUCTS-1040
• Release notes for TCS 0.19: https://www.notion.so/tarantool/d857bf8f3b0c4531bcaea8c14345f4f1#025482a8c9244c0ba906a87d6fa1c683
• Dev ticket: https://www.notion.so/cntmkt/3495ec6500674c8ba82a11deb9cf2744?p=e7b9b4f3192e4bdaa5ca7a23f5108f02&pm=s

Product: TCS
Since: release 0.19
Audience/target: end users (finops)
Root document: https://docs.d.tarantool.io/ru/column-store/doc/latest/
SME: @ Galiev-Ruslan

Details

• view queries
  select * from active_sessions();

• cancel in API
  curl -X POST 'http://$HOST:$PORT/cancel/$REQUEST_ID'
  --header 'content-type: application/json'
  --header 'x-tcs-route: broadcast'
  --data ''

• limitations

[lenkis]

Closed with PR https://github.com/tarantool/tcs-doc/commit/462c20fe2c7fc10575e216ce11574b8fdcf08516