Concat error while testing "array_repeat"

[jatin510]

Describe the bug

while testing the array_repeat, getting error for following statement:

checkSparkAnswerAndOperator(sql("SELECT array_repeat(_2, _4) from t1 where _4 is null"))

getting this error while trying to pass null to the count argument

- array_repeat *** FAILED *** (5 seconds, 334 milliseconds)
  org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 2.0 failed 1 times, most recent failure: Lost task 0.0 in stage 2.0 (TID 2) (192.168.1.20 executor driver): org.apache.comet.CometNativeException: Compute error: concat requires input of at least one array
	at org.apache.comet.Native.executePlan(Native Method)
	at org.apache.comet.CometExecIterator.$anonfun$getNextBatch$1(CometExecIterator.scala:127)
	at org.apache.comet.CometExecIterator.$anonfun$getNextBatch$1$adapted(CometExecIterator.scala:125)
	at org.apache.comet.vector.NativeUtil.getNextBatch(NativeUtil.scala:157)
	at org.apache.comet.CometExecIterator.getNextBatch(CometExecIterator.scala:125)
	at org.apache.comet.CometExecIterator.hasNext(CometExecIterator.scala:146)
	at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1.cometcolumnartorow_nextBatch_0$(Unknown Source)
	at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1.processNext(Unknown Source)
	at org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
	at org.apache.spark.sql.execution.WholeStageCodegenExec$$anon$1.hasNext(WholeStageCodegenExec.scala:760)
	at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:460)
	at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:460)
	at org.apache.spark.util.Iterators$.size(Iterators.scala:29)
	at org.apache.spark.util.Utils$.getIteratorSize(Utils.scala:1953)
	at org.apache.spark.rdd.RDD.$anonfun$count$1(RDD.scala:1269)
	at org.apache.spark.rdd.RDD.$anonfun$count$1$adapted(RDD.scala:1269)
	at org.apache.spark.SparkContext.$anonfun$runJob$5(SparkContext.scala:2303)
	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:92)
	at org.apache.spark.TaskContext.runTaskWithListeners(TaskContext.scala:161)
	at org.apache.spark.scheduler.Task.run(Task.scala:139)
	at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:554)
	at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1529)
	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:557)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:842)

Steps to reproduce

No response

Expected behavior

It should run the test successfully, when trying to pass null in count argument

Additional context

No response

[jatin510]

#1205

found this bug while testing array_repeat