itschrispeck commented on code in PR #16221:
URL: https://github.com/apache/pinot/pull/16221#discussion_r2178699504
##########
pinot-query-planner/src/main/java/org/apache/pinot/query/context/PhysicalPlannerContext.java:
##########
@@ -32,6 +35,7 @@
* Per-query unique context dedicated for the physical planner.
*/
public class PhysicalPlannerContext {
+ private static final Random RANDOM = new Random();
Review Comment:
could introduce some contention? maybe use ThreadLocalRandom?
##########
pinot-query-planner/src/main/java/org/apache/pinot/query/planner/physical/v2/opt/rules/LiteModeWorkerAssignmentRule.java:
##########
@@ -61,13 +57,11 @@ public LiteModeWorkerAssignmentRule(PhysicalPlannerContext
context) {
@Override
public PRelNode execute(PRelNode currentNode) {
- Set<String> workerSet = new HashSet<>();
List<String> workers;
if (_runInBroker) {
workers = List.of(String.format("0@%s", _context.getInstanceId()));
} else {
- accumulateWorkers(currentNode, workerSet);
- workers = List.of(sampleWorker(new ArrayList<>(workerSet)));
+ workers = List.of(String.format("0@%s", _context.getRandomInstanceId()));
Review Comment:
nit: avoid String.format
https://github.com/apache/pinot/issues/14404
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