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Add WorkerManager extension points for customizing leaf-stage segment assignment #18645

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Merged
KKcorps merged 1 commit into from
Jun 2, 2026
+10 −0
Merged

Add WorkerManager extension points for customizing leaf-stage segment assignment #18645

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10 changes: 10 additions & 0 deletions pinot-query-planner/src/main/java/org/apache/pinot/query/routing/WorkerManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -508,6 +508,7 @@ private void assignWorkersToLeafFragment(PlanFragment fragment, DispatchablePlan
}

private void updateContextForLeafStage(DispatchablePlanMetadata metadata, DispatchablePlanContext context) {
filterLeafStageSegments(context, metadata);
if (context.isUseLeafServerForIntermediateStage()) {
Map<Integer, QueryServerInstance> workerIdToServerInstanceMap = metadata.getWorkerIdToServerInstanceMap();
assert workerIdToServerInstanceMap != null;
Expand Down Expand Up @@ -735,6 +736,15 @@ private void setSegmentsForReplicatedLeafFragment(DispatchablePlanMetadata metad

// TODO: Support unavailable segments and optional segments for replicated leaf stage
metadata.setReplicatedSegments(segmentsMap);
filterReplicatedLeafStageSegments(context, metadata);
}

/** Extension point to filter the non-replicated leaf-stage per-worker segment assignment; no-op by default. */
protected void filterLeafStageSegments(DispatchablePlanContext context, DispatchablePlanMetadata metadata) {
}

/** Extension point to filter the replicated leaf-stage segments; no-op by default. */
protected void filterReplicatedLeafStageSegments(DispatchablePlanContext context, DispatchablePlanMetadata metadata) {
}

/**
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