clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Clickhouse generates logon's with "null" user account when TLS is enabled in LDAPS
- Refreshable materialized view with DEPENDS ON refreshes more frequently than dependencies
- Stateless test: <Fatal> : Logical error: 'position() < working_buffer.end()'.
- Stateless test: Timeout exceeded while receiving data from server. Waited for 300 seconds, timeout is 300 seconds.
- Avoid unnecessary memcpy in userspace page cache
- The uuid value replaces the macro in the system table
- Aggregator will have statistics about aggregated keys(min/max/any 100 values)
- User Defined Function (UDF) not working in ALTER TABLE UPDATE on ReplicatedMergeTree
- RESTORE hung (02907_backup_restore_default_nullable)
- mapElement, mapElementAll functions (as map specific analogue to arrayElement)
- Docs
- C++ not yet supported