clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix bad cast in Redis Dictionary with simple storage type and cache layout
- Fix cluster discovery re-registration after Keeper session expiry
- Fix SummingMergeTree FINAL dropping rows when column pruning hides non-zero summing columns
- Wrong results: SummingMergeTree FINAL drops a present row when reading only a summation column that is 0 for it (read-in-order + column pruning)
- Add ColumnsScatter::scatter: batched column split with type-index dispatch and bytes-budget input buffering
- If it's a DDL query for a table in Replicated or Shared database, and it has ON CLUSTER db_name, treat it as usual
- INSERT into JSON column with minmax skip index crashes on mixed-type arrays
- Support SETTINGS ALL READONLY in SQL settings profiles
- A bad cast exception occurs in Redis Dictionary when using the CACHE layout with simple storage types
- Allow forcing x-amz-checksum-* headers for S3 uploads
- Docs
- C++ not yet supported