clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Do not deduplicate an insert when its deduplication node is gone from Keeper
- Cancellation of a PostgreSQL read is lost if the cancel reaches the backend before the `COPY` starts executing
- Do not destroy a foreign detached part when cloning one from another shard
- `StorageWindowView::getSourceTableSelectQuery` drops ORDER BY without resetting `order_by_all`, so `expandOrderByAll` dereferences a null `orderBy()` and SIGSEGVs the server
- Add --dump-schema option to clickhouse-client and clickhouse-local
- `BigQueryClient::requestJSON` builds HTTP headers from user-controlled arguments without `HTTPHeaderFilter`, so `billing_project`/`access_token` can inject headers and smuggle a second request
- Derive the Iceberg metadata codec from the file being opened
- Fix a crash in the gRPC server when a call is torn down while gRPC still owns its responder
- Backport #113654 to 26.7: Fix non-atomic Keeper Raft state persistence
- `system.query_log.columns` doesn't contain INSERT target columns
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