There is an issue with performance when using the S3 Wildcard below.

Clickhouse Versions Tested (We have about 20 total servers):

• clickhouse/clickhouse-server:23.4.2.11
• clickhouse/clickhouse-server:23.1.3.5
• clickhouse/clickhouse-server:23.2.1.2537

Wildcard Used from Documentation: {some_string,another_string,yet_another_one} — Substitutes any of strings 'some_string', 'another_string', 'yet_another_one'

Without Wildcard:

• Expected result: Return all data under presto_data/config/bts_id=555251 folder (5 files, 4MB total)
• S3 Path: us-east-1.amazonaws.com/presto_data/config/bts_id=555251/*
• Speed: Finishes in about 1 second

With Wildcard:

• Expected result: Return all data under presto_data/config/bts_id=555251 folder (5 files, 4MB total) AND presto_data/config/bts_id=555256 folder (4 files, 3MB total)
• S3 Path: us-east-1.amazonaws.com/presto_data/config/bts_id={555251,555256}/*
• Speed: Never Finishes; Memory Limit Error after about 150 seconds

Thanks!