Huginn-kio opened a new pull request, #8668:
URL: https://github.com/apache/hbase/pull/8668
## HBASE-30389
### Summary
Normalize stale region locations while the active master rebuilds assignment
state from
hbase:meta after failover.
### Root cause
`AssignmentManager.RegionMetaLoadingVisitor.visitRegionState` copies the
region server location
from hbase:meta into `RegionStateNode`, while only states with current-host
semantics are added to
the per-server assignment state. A stale location can therefore remain
visible for CLOSED or
other non-online regions.
### Fix
- Normalize the loaded location to `null` for states without current-host
semantics.
- Preserve `lastHost` for locality and recovery decisions.
- Add regression coverage for CLOSED, OPEN, and implicit OFFLINE states
across master failover,
plus a split recovery case.
### Testing
- `mvn --batch-mode
-Dtest=TestAssignmentManagerLoadMetaRegionState,TestMasterAbortWhileSplittingRegion
-Dsurefire.rerunFailingTestsCount=0 -Dsurefire.parallel.forcedTimeout=900
-Dsurefire.shutdown=kill -DtrimStackTrace=false -DforkCount=0.5C -am -pl
./hbase-server test`
- 5 tests run, 0 failures, 0 errors.
- `mvn --batch-mode -pl hbase-server -DskipTests apache-rat:check`
- Passed.
### Compatibility
- No public API changes.
- No configuration, persisted-format, or wire-format changes.
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