Uses of Package
org.apache.hadoop.hive.ql.optimizer.calcite.rules

Packages that use org.apache.hadoop.hive.ql.optimizer.calcite.rules

Package	Description
org.apache.hadoop.hive.ql.optimizer.calcite
org.apache.hadoop.hive.ql.optimizer.calcite.rules
org.apache.hadoop.hive.ql.optimizer.calcite.rules.jdbc	JDBC external table rules that pushes down operators as much as possible to the external jdbc table.

Classes in org.apache.hadoop.hive.ql.optimizer.calcite.rules used by org.apache.hadoop.hive.ql.optimizer.calcite

Class and Description
HiveRulesRegistry

Classes in org.apache.hadoop.hive.ql.optimizer.calcite.rules used by org.apache.hadoop.hive.ql.optimizer.calcite.rules

Class and Description
HiveAggregateJoinTransposeRule Planner rule that pushes an Aggregate past a Join.
HiveAggregateProjectMergeRule Planner rule that recognizes a HiveAggregate on top of a HiveProject and if possible aggregate through the project or removes the project.
HiveAggregatePullUpConstantsRule
HiveAggregateReduceFunctionsRule This rule is a copy of AggregateReduceFunctionsRule that regenerates Hive specific aggregate operators.
HiveAggregateReduceRule Planner rule that reduces aggregate functions in Aggregates to simpler forms.
HiveDruidRules.AggregateExpandDistinctAggregatesDruidRule This is a simplified version of AggregateExpandDistinctAggregatesRule The goal of this simplified version is to help pushing single count distinct as multi-phase aggregates.
HiveExceptRewriteRule Planner rule that rewrite HiveExcept Note, we only have 2 branches because of except's semantic.
HiveExpandDistinctAggregatesRule Planner rule that expands distinct aggregates (such as COUNT(DISTINCT x)) from a Aggregate.
HiveFilterJoinRule
HiveFilterProjectTransposeRule
HiveFilterProjectTSTransposeRule
HiveFilterSetOpTransposeRule
HiveFilterSortTransposeRule
HiveInsertExchange4JoinRule Not an optimization rule.
HiveIntersectMergeRule Planner rule that merges multiple intersect into one Before the rule, it is intersect-branch1 |-----intersect-branch2 |-----branch3 After the rule, it becomes intersect-branch1 |-----branch2 |-----branch3 HiveIntersect
HiveIntersectRewriteRule Planner rule that rewrite HiveIntersect Rewrite: (GB-Union All-GB)-GB-UDTF (on all attributes) Example: R1 Intersect All R2 R3 = GB(R1 on all attributes + count() as c) union all GB(R2 on all attributes + count() as c) R4 = GB(R3 on all attributes + count(c) as cnt + min(c) as m) R5 = Fil ( cnt == #branch ) If it is intersect all then R6 = UDTF (R5) which will explode the tuples based on min(c).
HiveJoinAddNotNullRule
HiveJoinCommuteRule Planner rule that permutes the inputs of a Join, if it has a Project on top that simply swaps the fields of both inputs.
HiveJoinProjectTransposeRule
HiveJoinPushTransitivePredicatesRule Planner rule that infers predicates from on a Join and creates Filters if those predicates can be pushed to its inputs.
HiveJoinToMultiJoinRule Rule that merges a join with multijoin/join children if the equi compared the same set of input columns.
HivePointLookupOptimizerRule
HiveProjectFilterPullUpConstantsRule Planner rule that infers constant expressions from Filter into a Project operator.
HiveProjectMergeRule ProjectMergeRule merges a Project into another Project, provided the projects aren't projecting identical sets of input references.
HiveProjectOverIntersectRemoveRule HiveProjectOverIntersectRemoveRule removes a HiveProject over another HiveIntersect, provided the projects aren't projecting identical sets of input references.
HiveProjectSortTransposeRule
HiveReduceExpressionsWithStatsRule This rule simplifies the condition in Filter operators using the column statistics (if available).
HiveRemoveGBYSemiJoinRule Planner rule that removes a Aggregate from a HiveSemiJoin right input.
HiveRemoveSqCountCheck Planner rule that removes UDF sq_count_check from a plan if group by keys in a subquery are constant and there is no windowing or grouping sets
HiveSemiJoinRule Planner rule that creates a SemiJoinRule from a Join on top of a LogicalAggregate.
HiveSemiJoinRule.HiveAggregateToSemiJoinRule SemiJoinRule that matches a Aggregate on top of a Join with an Aggregate as its right child.
HiveSemiJoinRule.HiveProjectToSemiJoinRule SemiJoinRule that matches a Project on top of a Join with an Aggregate as its right child.
HiveSortJoinReduceRule Planner rule that pushes a HiveSortLimit past a HiveJoin.
HiveSortLimitPullUpConstantsRule Planner rule that pulls up constant keys through a SortLimit operator.
HiveSortMergeRule This rule will merge two HiveSortLimit operators.
HiveSortProjectTransposeRule
HiveSortUnionReduceRule Planner rule that pushes a HiveSortLimit past a HiveUnion.
HiveSubQueryRemoveRule.HiveSubQueryFinder Visitor that throws Util.FoundOne if applied to an expression that contains a RexSubQuery.
HiveUnionMergeRule Planner rule that merges multiple union into one Before the rule, it is union all-branch1 |-----union all-branch2 |-----branch3 After the rule, it becomes union all-branch1 |-----branch2 |-----branch3 HiveUnion
HiveUnionPullUpConstantsRule Planner rule that pulls up constants through a Union operator.
HiveWindowingFixRule Rule to fix windowing issue when it is done over aggregation columns (more info in HIVE-10627).

Classes in org.apache.hadoop.hive.ql.optimizer.calcite.rules used by org.apache.hadoop.hive.ql.optimizer.calcite.rules.jdbc

Class and Description
HiveFilterJoinRule