Antalya 26.6: Hybrid tables - #2144
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…next commit) --- Original cherry-pick message follows: Merge pull request #1694 from Altinity/feature/antalya-26.3/pr-1442 Antalya 26.3 forward-port: Hybrid tables # Conflicts: # src/Core/Settings.cpp # src/Interpreters/ClusterProxy/executeQuery.cpp # src/Planner/Utils.cpp # src/Storages/StorageDistributed.cpp
…next commit) --- Original cherry-pick message follows: Merge pull request #1788 from Altinity/mkmkme/antalya-26.3/hybrid-segment-pruning Antalya 26.3 Hybrid: added support for segment pruning # Conflicts: # src/Storages/StorageDistributed.cpp
Kept the PR's `StorageDistributed::getStorageSnapshot()` override, which freezes the Hybrid watermark snapshot in `HybridSnapshotData`. Adapted: re-added the `getStorageSnapshot()` declaration in StorageDistributed.h, removed by antalya-26.6 commit 5d159b3 ("rewrite getStorageSnapshot to getInMemoryMetadataPtr"), so the source PR's override body compiles. Source-PR: #1788 (#1788)
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Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Add support for Hybrid tables, which combine local MergeTree storage with data in object storage behind a configurable watermark. Watermarks can be moved with ALTER TABLE MODIFY SETTING and inspected via the new system.hybrid_watermarks table, and queries now skip segments that cannot match the combination of the WHERE clause and the segment predicate.
DONE
Add support for Hybrid tables, which combine local MergeTree storage with data in object storage behind a configurable watermark. Watermarks can be moved with ALTER TABLE MODIFY SETTING and inspected via the new system.hybrid_watermarks table, and queries now skip segments that cannot match the combination of the WHERE clause and the segment predicate.
DONE (#1694 by @zvonand, #1723 by @mkmkme, #1788 by @mkmkme, #1789 by @mkmkme).
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Combined port of 4 PR(s) (group
auto-grp-pr-1694). Cherry-picked from #1694, #1723, #1788, #1789.