clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix non-atomic Keeper Raft state persistence that could lose term/vote after a crash
- Refactor columns deserialization to avoid all assumeMutable calls, simplify the substreams cache, and remove rows_offset
- Fix ORDER BY WITH FILL applied per shard on Distributed tables
- ReplicatedMergeTree: acked `MOVE PARTITION TO TABLE` loses the partition from both tables after power loss (single filesystem)
- Make mutation entry lifecycle crash-durable on plain MergeTree
- Compare read-in-order virtual row on its covered sort-key prefix
- Fix lazy materialization OOB with text index unused virtual columns
- Text index: introduce new storage layout for positions for the phrase search support
- Recover an intact part from an empty columns.txt instead of losing it
- Make TRUNCATE / DROP PARTITION / DROP PART durable across power loss
- Docs
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