Files
greptimedb/src/metric-engine
Lei, HUANG 81d8beee3a feat: clean up soft-dropped regions offline (#8458)
* fix(meta): skip reopening dropped tables during purge

Purge soft-dropped tables by dropping stored routes directly instead of
reopening tombstoned regions first. Treat legacy
\`PurgeDroppedTableState::OpenRegions\` snapshots as a compatibility-only
transition to \`DropRegions\`.

Files:
- \`src/common/meta/src/ddl/purge_dropped_table.rs\`
- \`src/common/meta/src/ddl/undrop_table.rs\`
- \`src/common/meta/src/ddl/tests/drop_table.rs\`

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix(meta): guard undrop restore race

Serialize `UNDROP TABLE` with same-name creates by seeding the
original table name before procedure submission, and clean up reopened
regions when metadata restore fails.

Files:
- `src/common/meta/src/ddl/undrop_table.rs`
- `src/common/meta/src/ddl_manager.rs`
- `src/common/meta/src/ddl/tests/drop_table.rs`

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* feat: clean up soft-dropped regions offline

Use an explicit RegionCleanUp request for purge-table cleanup so tombstoned regions can be removed without reopening them.

Route cleanup through datanode, Mito, and metric-engine offline paths, including WAL obsoletion and region directory removal.

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix(datanode): reject cleanup for registered regions

Return `RegionBusy` when `RegionCleanUp` targets a region already tracked by the datanode, so offline cleanup only runs for regions without a local mapping.

Add coverage for `OfflineCleanup` engine selection and registered-region rejection.

Files:
- `src/datanode/src/region_server.rs`

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix(meta): require tombstone before undrop

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix(meta): reject file-engine soft drop

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix: harden soft-drop cleanup paths

Reject `RegionCleanUp` for already-open Mito regions instead of turning cleanup into a drop.

Make `UndropTableProcedure` tolerate missing persisted table names and always deregister failure detectors after restore-failure cleanup.

Files:
- `src/common/meta/src/ddl/undrop_table.rs`
- `src/mito2/src/engine/open_test.rs`
- `src/mito2/src/worker/handle_open.rs`

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* chore: bump cleanup proto dependency

Bump \`greptime-proto\` to the reviewed cleanup RPC revision and align cleanup request parsing and dispatch with the renamed \`CleanUpRequest\` payload.

Files:
- \`Cargo.toml\`
- \`Cargo.lock\`
- \`src/store-api/src/region_request.rs\`
- \`src/common/meta/src/ddl/drop_table/executor.rs\`

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* refactor: share region cleanup helpers

Share common region cleanup helpers between normal drop and offline cleanup
while keeping their preconditions separate.

- Extract shared dropped-region runtime cleanup for `handle_drop_request` and `handle_offline_cleanup_request`.
- Share runtime artifact and manifest cache cleanup after full deletion paths.
- Make full-drop directory removal policy explicit: full drop and purge cleanup force physical deletion, while partial drop may defer to global GC.

Files:
- `src/mito2/src/worker/handle_drop.rs`
- `src/mito2/src/worker/handle_open.rs`

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* chore: preserve soft-drop cleanup split state

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* refactor: remove obsolete CleanUp match arm from RegionRequest

The `CleanUp` variant in the `region_request::Body` match is now handled
exclusively by `RegionServer` via a separate path. This arm would have
returned an unexpected error, so removing it eliminates dead code.

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix(meta): clean every soft-dropped region replica

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* fix(meta): order soft-drop replica cleanup

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* Revert "fix(meta): order soft-drop replica cleanup"

This reverts commit e77162d3e5ebcf2817e2845a6a5177c328fb2c60.

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

* Revert "fix(meta): clean every soft-dropped region replica"

This reverts commit 2378e00cc258ca1b6a85a1aafbd68c79c666f43c.

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>

---------

Signed-off-by: Lei, HUANG <ratuthomm@gmail.com>
2026-07-14 08:39:36 +00:00
..