The efficiency of auto analyze is low with auto_analyze_priority_queue and infoSchemaV2 open in million tables scenario

[lilinghai]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

tidb_schema_cache_size 2GB
create 100k schemas and about 15 tables each of schema. 1.5 million tables totally
insert data for above tables
It takes about 10 minutes to execute a single analyze task on average when auto_analyze_priority_queue and infoSchemaV2 open. While 20 analyze tasks are executed per minute when auto_analyze_priority_queue or infoSchemaV2 close.
Currently, the automatic statistics collection task priority queue feature retrieves all table information each time it performs an analyze, selecting one from them to execute. If some tables are not in the infoschema cache, this process is quite time-consuming.

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiDB version? (Required)

Release Version: v8.2.0-alpha
Edition: Community
Git Commit Hash: 6cf8776
Git Branch: heads/refs/tags/v8.2.0-alpha
UTC Build Time: 2024-06-13 11:49:48
GoVersion: go1.21.10
Race Enabled: false
Check Table Before Drop: false
Store: tikv