Jackie-Jiang commented on a change in pull request #7568:
URL: https://github.com/apache/pinot/pull/7568#discussion_r760502909
##########
File path: pinot-core/src/main/java/org/apache/pinot/core/common/Operator.java
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@@ -46,6 +47,12 @@
*/
String getOperatorName();
+ /** @return List of {@link Operator}s that this operator depends upon. */
+ List<Operator> getChildOperators();
+
+ /** @return Description of this operator for Explain Plan */
+ String toExplainString();
Review comment:
Let's add something like `when it returns null, the operator won't be
included in the explain plan tree`
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/operator/DocIdSetOperator.java
##########
@@ -34,6 +37,7 @@
*/
public class DocIdSetOperator extends BaseOperator<DocIdSetBlock> {
private static final String OPERATOR_NAME = "DocIdSetOperator";
+ private static final String EXPLAIN_NAME = null;
Review comment:
Sure, I don't see this as a blocker, but I do feel this level is useful
to understand the query execution layers, so suggest including it in the
explain tree
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