Files
seaweedfs/weed/filer/ydb
Chris Lu a5ccefb661 filer: escape LIKE wildcards in SQL list prefixes (#11757)
* filer: escape LIKE wildcards in SQL list prefixes

ListDirectoryPrefixedEntries bound prefix+"%" straight into a LIKE
clause, so '_' and '%' in object names (e.g. Langfuse keys like
call_03_...) acted as wildcards: wrong results and a ~40x slower
range scan because (dirhash, name) can no longer be narrowed.

Escape '!'/'%'/'_' in the prefix and declare ESCAPE '!' in the
generated list SQL so every abstract_sql backend (mysql, mysql2,
postgres, postgres2, sqlite) matches literally with identical
semantics. '!' is used instead of '\' because SQLite shares
SqlGenMysql but would reject the MySQL-style '\\' literal, and
'\' would still need escaping itself.

* filer: escape LIKE wildcards in YDB list prefixes

Same wildcard-in-prefix bug as the abstract_sql backends: YQL LIKE
treated '_' and '%' in the prefix as wildcards. Apply the shared
LikePattern helper and declare ESCAPE '!' (YQL allows any escape
char except '%', '_' and '\').

* test: cover literal '_'/'%'/'!' prefixes in sqlite filer listing

End-to-end regression test through SqliteStore against a real
database; runs in CI under the sqlite build tag.
2026-10-15 16:51:15 -07:00
..
2022-09-14 23:06:44 -07:00
2022-05-03 22:54:31 +05:00
2026-02-20 18:42:00 -08:00
2026-02-20 18:42:00 -08:00
2026-02-20 18:42:00 -08:00

YDB

database: https://github.com/ydb-platform/ydb

go driver: https://github.com/ydb-platform/ydb-go-sdk

options:

[ydb]
enabled=true
dsn=grpcs://ydb-ru.yandex.net:2135/?database=/ru/home/username/db
prefix="seaweedfs"
useBucketPrefix=true
poolSizeLimit=50
dialTimeOut = 10

Authenticate produced with one of next environment variables:

  • YDB_SERVICE_ACCOUNT_KEY_FILE_CREDENTIALS=<path/to/sa_key_file> — used service account key file by path

  • YDB_ANONYMOUS_CREDENTIALS="1" — used for authenticate with anonymous access. Anonymous access needs for connect to testing YDB installation

  • YDB_METADATA_CREDENTIALS="1" — used metadata service for authenticate to YDB from yandex cloud virtual machine or from yandex function

  • YDB_ACCESS_TOKEN_CREDENTIALS=<access_token> — used for authenticate to YDB with short-life access token. For example, access token may be IAM token

  • YDB_CONNECTION_STRING="grpcs://endpoint/?database=database"

  • i test using this dev database: make dev_ydb