clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Report fuzzer runner aborts instead of an opaque status.tsv FileNotFoundError
- Fix NUMBER_OF_COLUMNS_DOESNT_MATCH for duplicate ALIAS columns under parallel replicas
- Reuse held source connections across sequential reads in the experimental ReaderExecutor
- `hasTypeThatCanContainNulls` omits `Object`/`JSON`, so a JSON join key with one distinct right-side value silently drops matching rows under the runtime filter
- Fix broken-promise server abort in ZooKeeper client sendThread
- Label imprecise statistics estimation in EXPLAIN
- Do not deduplicate restored ReplicatedMergeTree parts
- Add `input_format_json_max_object_size` setting to limit JSON object size on parsing
- Fix pointwiseMultiply all-ones fast path index on mismatched schemas
- Server died
- Docs
- C++ not yet supported