clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- clickhouse-client does not allow to pass profile using settings in the query
- materialized view "DeadLetter" table
- UnlinkMetadataFileOperation::undo breaks the metadata reference count.
- Minidump and coredump on linux with breakpad
- Migration from ZooKeeper to ClickHouse Keeper
- Column-based aggregate retention function (ex: net dollar retention)
- Try to push down filter to both parts of join (on plan level).
- Unique insert Batch-ID for atomic inserts
- How to parse message which is an array of json from kafka and dont get DB::ParsingException: Cannot parse input: expected ']' before: 'json'
- Perfomance issues for mutation on many partitions
- Docs
- C++ not yet supported