SwaraliJoshi opened a new pull request, #8248:
URL: https://github.com/apache/hbase/pull/8248

   Introduce RestoreSnapshotHFileArchiver as a safe wrapper around 
HFileArchiver for use by RestoreSnapshotHelper. Before delegating any 
archive/delete operation, it validates that the target path does not fall under 
the production HBase root directory (hbase.rootdir). If it does, the operation 
is blocked with an IOException and an ERROR log to prevent accidental data loss.
   
   - Add RestoreSnapshotHFileArchiver with root-dir safety checks for 
archiveRegion and archiveFamilyByFamilyDir
   - Update RestoreSnapshotHelper to use RestoreSnapshotHFileArchiver instead 
of HFileArchiver directly (both call sites)
   - Add TestRestoreSnapshotHFileArchiver with 7 tests covering root-dir 
blocking, temp-dir allowing, sibling-path handling, and custom root dirs


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