dang-stripe opened a new issue, #17625:
URL: https://github.com/apache/pinot/issues/17625

   Got the following query failure when doing a lookup join on an empty dim 
table: 
   
   Query
   ```
   SELECT /*+ joinOptions(join_strategy='lookup') */
   FROM table1 JOIN table2 ON table1.key = table2.key
   LIMIT 5
   ```
   
   Logs
   ```
   WARN [MultiStageBrokerRequestHandler] 
[jersey-server-managed-async-executor-112:687] Request 1234 failed with 
exception
   [2026-02-03 22:36:09.020228] org.apache.pinot.spi.exception.QueryException: 
Error while planning query
   ...
   [2026-02-03 22:36:09.020930] Caused by: java.lang.RuntimeException: Error 
composing query plan for 'SELECT /*+ joinOptions(join_strategy='lookup') */  
FROM table1 JOIN table2 ON table1.key = table2.key LIMIT 5': bound must be 
positive'
   [2026-02-03 22:36:09.020951]         at 
org.apache.pinot.query.QueryEnvironment$CompiledQuery.planQuery(QueryEnvironment.java:967)
   [2026-02-03 22:36:09.020967]         at 
org.apache.pinot.broker.requesthandler.MultiStageBrokerRequestHandler.lambda$query$5(MultiStageBrokerRequestHandler.java:546)
   [2026-02-03 22:36:09.020980]         at 
org.apache.pinot.spi.query.QueryThreadContext$1.lambda$decorate$0(QueryThreadContext.java:190)
   [2026-02-03 22:36:09.020985]         ... 4 more
   [2026-02-03 22:36:09.020996] Caused by: java.lang.IllegalArgumentException: 
bound must be positive
   [2026-02-03 22:36:09.021005]         at 
java.base/java.util.Random.nextInt(Random.java:557)
   [2026-02-03 22:36:09.021017]         at 
org.apache.pinot.query.routing.WorkerManager.assignWorkersToIntermediateFragment(WorkerManager.java:241)
   [2026-02-03 22:36:09.021034]         at 
org.apache.pinot.query.routing.WorkerManager.assignWorkersToNonRootFragment(WorkerManager.java:147)
   [2026-02-03 22:36:09.021046]         at 
org.apache.pinot.query.routing.WorkerManager.assignWorkers(WorkerManager.java:114)
   [2026-02-03 22:36:09.021060]         at 
org.apache.pinot.query.planner.physical.PinotDispatchPlanner.createDispatchableSubPlan(PinotDispatchPlanner.java:70)
   [2026-02-03 22:36:09.021072]         at 
org.apache.pinot.query.QueryEnvironment.toDispatchableSubPlan(QueryEnvironment.java:519)
   [2026-02-03 22:36:09.021083]         at 
org.apache.pinot.query.QueryEnvironment.toDispatchableSubPlan(QueryEnvironment.java:501)
   [2026-02-03 22:36:09.021095]         at 
org.apache.pinot.query.QueryEnvironment$CompiledQuery.planQuery(QueryEnvironment.java:962)
   ```
   
   Which points to 
https://github.com/apache/pinot/blob/441d335dcf04647c34353aec9213c8361f4009a0/pinot-query-planner/src/main/java/org/apache/pinot/query/routing/WorkerManager.java#L241


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