ankitsultana opened a new issue, #10917:
URL: https://github.com/apache/pinot/issues/10917

   Saw this integration test failure: 
https://github.com/apache/pinot/actions/runs/5273083250/jobs/9536095285
   
   This assertion seems to be failing in 
`BaseRawIntSingleColumnDistinctExecutor`
   
   ```
       assert records.size() <= _limit;
   ```
   
   (I haven't take a deeper look into this)
   
   cc: @walterddr 
   
   ```
   00:04:38.767 ERROR [BaseCombineOperator] 
[query_leaf_worker_on_46807_port-2-thread-3] Caught serious error while 
processing query: QueryContext{_tableName='mytable_OFFLINE', _subquery=null, 
_selectExpressions=[distinct(ActualElapsedTime)], _aliasList=[null], 
_filter=null, _groupByExpressions=null, _havingFilter=null, 
_orderByExpressions=null, _limit=2147483647, _offset=0, 
_queryOptions={pinot.query.runner.broker.request.timeout.ms=60000, 
useMultistageEngine=true, timeoutMs=60000, 
pinot.query.runner.broker.request.id=1650621113000000191, responseFormat=sql, 
groupByMode=sql}, _expressionOverrideHints={}, _explain=false}
   java.lang.AssertionError: null
        at 
org.apache.pinot.core.query.distinct.raw.BaseRawIntSingleColumnDistinctExecutor.getResult(BaseRawIntSingleColumnDistinctExecutor.java:73)
 ~[classes/:?]
   Jun 15, 2023 12:04:38 AM io.grpc.internal.ServerCallImpl internalClose
        at 
org.apache.pinot.core.query.distinct.raw.RawIntSingleColumnDistinctOnlyExecutor.getResult(RawIntSingleColumnDistinctOnlyExecutor.java:29)
 ~[classes/:?]
   WARNING: Cancelling the stream with status Status{code=INTERNAL, 
description=Completed without a response, cause=null}
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:66)
 ~[classes/:?]
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:38)
 ~[classes/:?]
        at 
org.apache.pinot.core.operator.BaseOperator.nextBlock(BaseOperator.java:43) 
~[classes/:?]
        at 
org.apache.pinot.core.operator.combine.BaseSingleBlockCombineOperator.processSegments(BaseSingleBlockCombineOperator.java:102)
 ~[classes/:?]
        at 
org.apache.pinot.core.operator.combine.BaseCombineOperator$1.runJob(BaseCombineOperator.java:108)
 [classes/:?]
        at 
org.apache.pinot.core.util.trace.TraceRunnable.run(TraceRunnable.java:40) 
[classes/:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) [?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
[?:?]
        at java.lang.Thread.run(Thread.java:833) [?:?]
   00:04:38.769 ERROR [OpChainSchedulerService] 
[query_intermediate_worker_on_46807_port-1-thread-3] 
(OpChain{1650621113000000191_0_3}): Completed erroneously 
(1650621113000000191_0_3) Queued Count: 1, Executing Time: 23ms, Queued Time: 
0ms {200=QueryExecutionError:
   java.lang.AssertionError
        at 
org.apache.pinot.core.query.distinct.raw.BaseRawIntSingleColumnDistinctExecutor.getResult(BaseRawIntSingleColumnDistinctExecutor.java:73)
        at 
org.apache.pinot.core.query.distinct.raw.RawIntSingleColumnDistinctOnlyExecutor.getResult(RawIntSingleColumnDistinctOnlyExecutor.java:29)
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:66)
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:38)}
   00:04:38.770 ERROR [OpChainSchedulerService] 
[query_intermediate_worker_on_46807_port-1-thread-3] 
(OpChain{1650621113000000191_0_2}): Completed erroneously 
(1650621113000000191_0_2) Queued Count: 2, Executing Time: 0ms, Queued Time: 
24ms {200=QueryExecutionError:
   java.lang.AssertionError
        at 
org.apache.pinot.core.query.distinct.raw.BaseRawIntSingleColumnDistinctExecutor.getResult(BaseRawIntSingleColumnDistinctExecutor.java:73)
        at 
org.apache.pinot.core.query.distinct.raw.RawIntSingleColumnDistinctOnlyExecutor.getResult(RawIntSingleColumnDistinctOnlyExecutor.java:29)
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:66)
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:38)}
   00:04:38.770 ERROR [OpChainSchedulerService] 
[query_intermediate_worker_on_46807_port-1-thread-3] 
(OpChain{1650621113000000191_0_1}): Completed erroneously 
(1650621113000000191_0_1) Queued Count: 2, Executing Time: 0ms, Queued Time: 
25ms {200=QueryExecutionError:
   java.lang.AssertionError
        at 
org.apache.pinot.core.query.distinct.raw.BaseRawIntSingleColumnDistinctExecutor.getResult(BaseRawIntSingleColumnDistinctExecutor.java:73)
        at 
org.apache.pinot.core.query.distinct.raw.RawIntSingleColumnDistinctOnlyExecutor.getResult(RawIntSingleColumnDistinctOnlyExecutor.java:29)
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:66)
        at 
org.apache.pinot.core.operator.query.DistinctOperator.getNextBlock(DistinctOperator.java:38)}
   ```


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