clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add experimental `ElasticsearchQueue` table engine
- Reject divergent same-named parts in parallel replicas coordinator
- Add INSERT ... RETURNING (non-atomic, user-supplied SELECT)
- Make replace partition on plain_rewritable atomic for readers
- Make unit tests compile with -DENABLE_LIBRARIES=OFF
- lzma compression should be rejected by DataLake engines
- Debug assertion `PODArray::operator[]` OOB in `ColumnString::getDataAt` during planner-time partial-result evaluation of `<=>` over a String GROUP BY key
- TSan heap-use-after-free in `AggregateFunctionDistinctSingleNumericData::add` after `HashTable::resize` realloc (stale pointer in same-thread loop)
- Reject compression_method argument for data lake engines
- Add optional text representation to FixedString
- Docs
- C++ not yet supported