clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Do not prune Iceberg data files on uuid manifest bounds
- Fix JIT-compiled bit shifts and rotates disagreeing with the interpreted implementation
- disable_tunneling_for_https_requests_over_http_proxy breaks no_proxy config for replication traffic
- ClickHouse Keeper horizontal scalability / sharding
- Finish the conversion to `ReplicatedMergeTree` under `lazy_load_tables`
- Pending RENAME COLUMN of a Nested leaf silently returns default values from wide parts: rename resolution misses flattened-name keys when the reader converts the leaf to a subcolumn
- Compress each substream in a separate block in Compact parts
- S3 object keys shaped like URIs are rewritten to a different bucket in every S3 operation after #116771 (ungated splitBucketAndKey): cross-bucket reads at defaults, silent wrong rows with s3_validate_etag_on_read=0
- Combinator- and Nullable-adapter-wrapped aggregate states persist ignored Map parameters into an unparseable column type; the table cannot be attached or loaded after restart
- Analyzer: convert a GROUP BY key referenced from a window function to Nullable under group_by_use_nulls
- Docs
- C++ not yet supported