[IGNITE-15781] CacheGroupMetrics spams to heap with java.lang.Integer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.11
• Fix Version/s: 2.12
• Labels: ise
• Release Note: Fix unnecessary boxing of partition numbers for metrics: min/max num of part copies
• Assignee: Maksim Timonin
• Reporter: Maksim Timonin
• Created: 20/Oct/21 13:24
• Updated: 12/Sep/22 14:22
• Resolved: 18/Nov/21 21:19

Description

Check GridDhtPartitionMap.get() and similar methods that expect Integer, but CacheMetrics uses prmitive types. Autoboxing pollutes heap much if metrics asks frequently.

 

Metrics to check: getMinimumNumberOfPartitionCopies()

this metrics iterates over all nodes and partitions and invokes get(int) on every iteration.

Issue Links

• links to: GitHub Pull Request #9518
• links to: https://github.com/apache/ignite/pull/9518/files