clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- S3Queue table engine triggers the dependent Materialized View on insert of an empty block
- "any left join" and "left join" result in different dataset sizes even when the data in the right table is consistent.
- Restore retries dns resolution infinitely after DNS_ERROR
- New JSON-type fuzzing proposal
- The implementation of ColumnConst::compareAt should be similar with ColumnSparse::compareAt
- A new native parquet reader support filter push down
- Inconsistency in default quoting_character between toString and extractKeyValuePairs
- parseDateTime64BestEffort support RFC3339Nano timestamps with Z0700 (with +- missing)
- ASLR build writes randomized address to`trace_log` and `Stack trace:` line during crashes
- full table scan when using Merge() + Distributed() combo
- Docs
- C++ not yet supported