Yingyi Bu has posted comments on this change. Change subject: Index-only plan step 2: Added SplitOperator ......................................................................
Patch Set 15: (4 comments) https://asterix-gerrit.ics.uci.edu/#/c/1196/15/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/AbstractReplicateOperator.java File hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/AbstractReplicateOperator.java: Line 103: public boolean isBlocker() { Why this method is needed? https://asterix-gerrit.ics.uci.edu/#/c/1196/15/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/SplitOperator.java File hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/SplitOperator.java: Line 40: public LogicalOperatorTag getOperatorTag() { You have to implement the following methods because there is a expression: acceptExpressionTransform substituteVar https://asterix-gerrit.ics.uci.edu/#/c/1196/15/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/IsomorphismOperatorVisitor.java File hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/IsomorphismOperatorVisitor.java: Line 293: } need to check if branching expressions are the same. https://asterix-gerrit.ics.uci.edu/#/c/1196/15/hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/UsedVariableVisitor.java File hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/logical/visitors/UsedVariableVisitor.java: Line 442: VariableUtilities.getUsedVariables(outputOp.getValue(), usedVariables); The visitor only gets the current used variables, hence, you don't need to traverse children operators. -- To view, visit https://asterix-gerrit.ics.uci.edu/1196 To unsubscribe, visit https://asterix-gerrit.ics.uci.edu/settings Gerrit-MessageType: comment Gerrit-Change-Id: Ice190827513cd8632764b52c9d0338d65c830740 Gerrit-PatchSet: 15 Gerrit-Project: asterixdb Gerrit-Branch: master Gerrit-Owner: Taewoo Kim <[email protected]> Gerrit-Reviewer: Jenkins <[email protected]> Gerrit-Reviewer: Jianfeng Jia <[email protected]> Gerrit-Reviewer: Taewoo Kim <[email protected]> Gerrit-Reviewer: Till Westmann <[email protected]> Gerrit-Reviewer: Yingyi Bu <[email protected]> Gerrit-HasComments: Yes
