clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Propagate the coordinator's split-time ETag to s3Cluster workers
- Allow to use external statistics for serialization infos
- Guard ColumnString::filter against offsets inconsistent with chars array
- Retry clickhouse-server boot in functional-test setup
- Add zero-argument year() returning the current year
- Type-based pruning of expressions involving toString
- Reduce high memory usage in advanced shared data serialization with huge number of unque and sparse paths, especially for JSON inside Arrays
- system.query_log normalized_query_hash differs for queries that only differ in sign of numeric literals (e.g. SELECT 1 vs SELECT -1)
- Remove ACCESS_DENIED and INVALID_ACCESS_KEY_ID from unretryable S3 errors
- system.query_log tables, databases, etc... columns not set on query cache hit
- Docs
- C++ not yet supported