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Posted to issues-all@impala.apache.org by "Quanlong Huang (Jira)" <ji...@apache.org> on 2023/01/17 02:58:00 UTC
[jira] [Created] (IMPALA-11845) Select STAR with table ref is not resolved correctly on column/row masked views
Quanlong Huang created IMPALA-11845:
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Summary: Select STAR with table ref is not resolved correctly on column/row masked views
Key: IMPALA-11845
URL: https://issues.apache.org/jira/browse/IMPALA-11845
Project: IMPALA
Issue Type: Bug
Components: Security
Reporter: Quanlong Huang
Assignee: Quanlong Huang
When a catalog view is applied with Ranger column-masking or row-filtering policies, select STAR on it doesn't work if the table ref is used, e.g. this doesn't work:
{code:sql}
select v.* from masked_view v;
ERROR: IllegalStateException: null
{code}
Note that selecting STAR directly or selecting any columns still work:
{code:sql}
select * from masked_view;
select c1, c2 from masked_view;
{code}
The stacktrace:
{noformat}
I0117 10:50:36.894714 21116 jni-util.cc:288] f940f87cdea03526:3c48d0f300000000] java.lang.IllegalStateException
at com.google.common.base.Preconditions.checkState(Preconditions.java:486)
at org.apache.impala.analysis.Analyzer.resolvePathWithMasking(Analyzer.java:1216)
at org.apache.impala.analysis.Analyzer.resolvePathWithMasking(Analyzer.java:1177)
at org.apache.impala.analysis.SelectStmt$SelectAnalyzer.analyzeStarPath(SelectStmt.java:785)
at org.apache.impala.analysis.SelectStmt$SelectAnalyzer.collectStarExpandedPaths(SelectStmt.java:879)
at org.apache.impala.analysis.SelectStmt$SelectAnalyzer.analyze(SelectStmt.java:333)
at org.apache.impala.analysis.SelectStmt$SelectAnalyzer.access$100(SelectStmt.java:280)
at org.apache.impala.analysis.SelectStmt.analyze(SelectStmt.java:272)
at org.apache.impala.analysis.AnalysisContext.reAnalyze(AnalysisContext.java:622)
at org.apache.impala.analysis.AnalysisContext.analyze(AnalysisContext.java:553)
at org.apache.impala.analysis.AnalysisContext.analyzeAndAuthorize(AnalysisContext.java:468)
at org.apache.impala.service.Frontend.doCreateExecRequest(Frontend.java:2059)
at org.apache.impala.service.Frontend.getTExecRequest(Frontend.java:1967)
at org.apache.impala.service.Frontend.createExecRequest(Frontend.java:1789)
at org.apache.impala.service.JniFrontend.createExecRequest(JniFrontend.java:164)
{noformat}
Related code:
{code:java}
1180 public Path resolvePathWithMasking(List<String> rawPath, PathType pathType,
1181 TimeTravelSpec timeTravelSpec) throws AnalysisException, TableLoadingException {
1182 Path resolvedPath = resolvePath(rawPath, pathType, timeTravelSpec);
1183 // Skip normal resolution cases that don't relate to nested types.
1184 if (pathType == PathType.TABLE_REF) {
1185 if (resolvedPath.destTable() != null || !resolvedPath.isRootedAtTuple()) {
1186 return resolvedPath;
1187 }
1188 } else if (pathType == PathType.SLOT_REF) {
1189 if (!resolvedPath.getMatchedTypes().get(0).isStructType()) {
1190 return resolvedPath;
1191 }
1192 } else if (pathType == PathType.STAR) {
1193 if (!resolvedPath.destType().isStructType() || !resolvedPath.isRootedAtTuple()) {
1194 return resolvedPath;
1195 }
1196 }
1197 // In this case, resolvedPath is resolved on a nested column. Check if it's resolved
1198 // on a table masking view. The root TableRef(table/view) could be at a parent query
1199 // block (correlated case, e.g. "t.int_array" in query
1200 // "SELECT ... FROM tbl t, (SELECT * FROM t.int_array) a" roots at "tbl t" which is
1201 // in the parent block), so we should find the parent block first then we can find
1202 // the root TableRef.
1203 TupleId rootTupleId = resolvedPath.getRootDesc().getId();
1204 Analyzer parentAnalyzer = findAnalyzer(rootTupleId);
1205 TableRef rootTblRef = parentAnalyzer.getTableRef(rootTupleId);
1206 Preconditions.checkNotNull(rootTblRef);
1207 if (!rootTblRef.isTableMaskingView()) return resolvedPath;
1208 // resolvedPath is resolved on a nested column of a table masking view. The view
1209 // won't produce results of nested columns. It just exposes the nested columns of the
1210 // underlying BaseTableRef in the fields of its output type. (See more in
1211 // InlineViewRef#createTupleDescriptor()). We need to resolve 'rawPath' inside the
1212 // view as if the underlying table is not masked. So the resolved path can point to
1213 // the real table and be used to create materialized slot in the TupleDescriptor of
1214 // the real table.
1215 InlineViewRef tableMaskingView = (InlineViewRef) rootTblRef;
1216 Preconditions.checkState(
1217 tableMaskingView.getUnMaskedTableRef() instanceof BaseTableRef);
1218 // Resolve rawPath inside the table masking view to point to the real table.
1219 Path maskedPath = tableMaskingView.inlineViewAnalyzer_.resolvePath(
1220 rawPath, pathType, timeTravelSpec);
1221 maskedPath.setPathBeforeMasking(resolvedPath);
1222 return maskedPath;
1223 }
{code}
https://github.com/apache/impala/blob/b0009db40b7a532694987a0f4280b322d72f07b7/fe/src/main/java/org/apache/impala/analysis/Analyzer.java#L1217
The 'pathType' is STAR and the 'rawPath' is the view ref. It's not a nested struct column so should be handled in the if-branches at the begining.
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