[IGNITE-12020] SQL: Metrics of using memory quotas.

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Component/s: sql
• Ignite Flags: Docs Required
• Assignee: Pavel Kuznetsov
• Reporter: Pavel Kuznetsov
• Created: 26/Jul/19 10:52
• Updated: 03/Feb/20 10:13
• Resolved: 03/Feb/20 10:13

Description

Only local (per node) metrics are in scope.

Metrics to implement:
1) How many times memory quota have been requested on the node by all the queries in total. (org.apache.ignite.internal.processors.query.h2.QueryMemoryManager)
2) How much memory all the queries are allowed to reserve on this node in total. (Possibly constant value until node reboot)
3) How much memory currently available for the queries on this node.