kgyrtkirk commented on a change in pull request #848: HIVE-22486
URL: https://github.com/apache/hive/pull/848#discussion_r349151290
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File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveRelFieldTrimmer.java
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@@ -674,10 +677,14 @@ public TrimResult trimFields(Project project,
ImmutableBitSet fieldsUsed,
// set columnAccessInfo for ViewColumnAuthorization
for (Ord<RexNode> ord : Ord.zip(project.getProjects())) {
if (fieldsUsed.get(ord.i)) {
- if (this.columnAccessInfo != null && this.viewProjectToTableSchema !=
null
- && this.viewProjectToTableSchema.containsKey(project)) {
+ if (this.viewProjectToTableSchema != null &&
this.viewProjectToTableSchema.containsKey(project)) {
Table tab = this.viewProjectToTableSchema.get(project);
- this.columnAccessInfo.add(tab.getCompleteName(),
tab.getAllCols().get(ord.i).getName());
+ if (this.directColumnAccessInfo != null) {
+ this.directColumnAccessInfo.add(tab.getCompleteName(),
tab.getAllCols().get(ord.i).getName());
+ }
+ if (this.allColumnAccessInfo != null) {
+ this.allColumnAccessInfo.add(tab.getCompleteName(),
tab.getAllCols().get(ord.i).getName());
+ }
Review comment:
this is actually duplicates the `ColumnAccessInfo` at a lot of places;
wouldn't it make sense to extend `ColumnAccessInfo` internally; and enable it
to "mark" columns; and add a method which is able to retrieve columns based on
usage or not.
right now `CAI` is a `Map< TableNameString, Set<ColumnNameString>>`; how
about changing this to a `Map<TableNameString, Set<ColumnAccess>` where
`ColumnAccess` would be the `ColumnNameString` and some extra info which is
added here.
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