clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Bound the Keeper disk mover's retries once the server is running
- Perf(String): Speed up Jaro matching with occurrence index
- LDAP: `exclude_users` for the `ldap` user directory
- LDAP: map `memberOf` group DNs to roles with `rdn_attribute` and a `groups` allow-list
- Do not substitute a join key that cannot be re-evaluated into a pushed-down filter
- LDAP: search-and-bind authentication with a service account
- LDAP: `tls1.3`, `tls_maximum_protocol_version`, configurable timeouts, LDAPS integration test
- Publish a known total row count before the query starts reading
- hasAnyTokens/hasAllTokens tokenize every row on the fallback path; skipping rows that cannot match cuts latency 40-49%
- Do not keep waiting for blob removal when the object storage rejects removals
- Docs
- C++ not yet supported