[KYUUBI #7740][AUTHZ] Authorize Iceberg metadata and changelog tables as the data table - #7741
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[KYUUBI #7740][AUTHZ] Authorize Iceberg metadata and changelog tables as the data table#7741j1wonpark wants to merge 1 commit into
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…tables as the data table Since apache#5248 the scan of an Iceberg metadata table (`t.history`, `t.files`, ...) or `t.changes` produces no privilege object: its 4-part `Table.name()` makes `StringTableExtractor` throw `MatchError`, which is swallowed, so the read is never checked. Map such tables to the data table they are derived from. Signed-off-by: Jiwon Park <jiwonpark@apache.org>
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Why are the changes needed?
Closes #7740. Also closes #3924.
Since #5248 (1.9.0), a scan of an Iceberg metadata table (
t.history,t.files, ...) ort.changesproduces no privilege object: the 4-partTable.name()makesStringTableExtractorthrowMatchError, whichCommandSpec.tablesswallows, so the read is never checked.t.filesandt.changesexpose column values.This maps such tables to the data table they are derived from (
BaseMetadataTable.table(),SparkChangelogTable.icebergTable), sot.historyrequiresselectondb/t/<its columns>, the same wayVERSION AS OFis already checked. The name is not split becausecat.a.b.cis ambiguous with a nested namespace.Two consequences worth noting:
tdenies its metadata tables. Bounds, partition values and change rows can reveal restricted columns, so this is the safe outcome.tnow applies to its metadata tables and fails analysis there, since the filter references data columns. Also deny-safe.The existing
CALL rollback_*tests readt.snapshotsoutsidedoAsand passed only because of this gap; they now run asadmin.How was this patch tested?
New test in
IcebergCatalogRangerSparkExtensionSuitecoveringhistory,snapshots,files,manifests,partitions,refsandchanges: a user with no policy is denied ondb/t/..., a user withselecton the table reads them. Fails before the fix. Full suite passes locally.Was this patch assisted by generative AI tooling?
Assisted-by: Claude Opus 5