yugabyte/yugabyte-db

[DocDB] Metrics for vector compaction and flush

Open

#28,578 opened on 2025年9月15日

GitHub で見る
 (1 comment) (0 reactions) (1 assignee)C (8,229 stars) (1,003 forks)batch import
area/docdbgood first issuekind/enhancementpriority/medium

説明

Jira Link: DB-18272

Description

Add metrics for vector compaction and flush related activities

Regular tables update the following compaction metrics:

  • rocksdb_compact_read_bytes
  • rocksdb_compact_write_bytes
  • compaction_tasks
  • rocksdb_compaction_times_micros_sum
  • rocksdb_compaction_times_micros_count

Need to think through the below counts/ Introduce specific counters for vector chunks

  • rocksdb_numfiles_in_singlecompaction_count
  • rocksdb_numfiles_in_singlecompaction_sum

Some of them are relevant to vector indexes. It would be good to update them for vector compactions as well. At the same time, we should add new metrics that describe vector compactions better.

Issue Type

kind/enhancement

Warning: Please confirm that this issue does not contain any sensitive information

  • I confirm this issue does not contain any sensitive information.

コントリビューターガイド

技術スタック
ccpp
領域
databaseperformanceobservability
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
4
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
3-5 days
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
blocked
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
mostly clear
前提条件
Understanding of compaction in distributed DBFamiliarity with RocksDB metrics
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
20
調査方針
Start by examining existing compaction metrics in `rocksdb compact *` files (likely in `src/yb/rocksdb/`). Look at how vector indexes are implemented in `src/yb/docdb/vector index/`. The issue requests adding metrics similar to regular tables but for vector compaction. Consider both updating existing counters where applicable and introducing new counters specific to vector chunks. Review comments on the Jira link for additional context.