[CASSANDRA-17902] Revisit EncodingStats use in memtables

• Type: Improvement
• Status: Triage Needed
• Priority: Normal
• Resolution: Unresolved
• Component/s: Local/Memtable
• Platform: All
• Assignee: Unassigned
• Reporter: Branimir Lambov
• Created: 16/Sep/22 12:55
• Updated: 28/Sep/22 18:09

Description

The efficiency of EncodingStats and its memtable collector can be improved, e.g. to avoid repeatedly checking for the epoch value and creating new non-short-lived objects on modification.

Further, as the stats are only used during flush, it does not make sense to collect them during memtable updates but rather as part of the processing pass at the start of flushes.

Issue Links

• relates to: CASSANDRA-17240 CEP-19: Trie memtable implementation