[BUG]Incremental result collection throws npe

[yaooqinn]

Describe the bug
A clear and concise description of what the bug is.

    java.lang.NullPointerException
        at org.apache.spark.sql.execution.SparkPlan.org$apache$spark$sql$execution$SparkPlan$$decodeUnsafeRows(SparkPlan.scala:272)
        at org.apache.spark.sql.execution.SparkPlan$$anonfun$executeToIterator$2.apply(SparkPlan.scala:316)
        at org.apache.spark.sql.execution.SparkPlan$$anonfun$executeToIterator$2.apply(SparkPlan.scala:316)
        at scala.collection.Iterator$$anon$12.nextCur(Iterator.scala:434)
        at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:440)
        at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
        at scala.collection.Iterator$$anon$10.hasNext(Iterator.scala:389)
        at scala.collection.Iterator$class.toStream(Iterator.scala:1322)
        at scala.collection.AbstractIterator.toStream(Iterator.scala:1336)
        at scala.collection.Iterator$$anonfun$toStream$1.apply(Iterator.scala:1322)
        at scala.collection.Iterator$$anonfun$toStream$1.apply(Iterator.scala:1322)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1233)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1223)
        at scala.collection.immutable.Stream.length(Stream.scala:312)
        at scala.collection.SeqLike$class.indices(SeqLike.scala:669)
        at scala.collection.AbstractSeq.indices(Seq.scala:41)
        at yaooqinn.kyuubi.schema.ColumnBasedSet.yaooqinn$kyuubi$schema$ColumnBasedSet$$toTColumn(ColumnBasedSet.scala:62)
        at yaooqinn.kyuubi.schema.ColumnBasedSet$$anonfun$toTRowSet$1.apply(ColumnBasedSet.scala:35)
        at yaooqinn.kyuubi.schema.ColumnBasedSet$$anonfun$toTRowSet$1.apply(ColumnBasedSet.scala:35)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
        at scala.collection.immutable.Range.foreach(Range.scala:160)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
        at scala.collection.AbstractTraversable.map(Traversable.scala:104)
        at yaooqinn.kyuubi.schema.ColumnBasedSet.toTRowSet(ColumnBasedSet.scala:35)
        at yaooqinn.kyuubi.server.FrontendService.FetchResults(FrontendService.scala:490)
        at org.apache.hive.service.cli.thrift.TCLIService$Processor$FetchResults.getResult(TCLIService.java:1553)
        at org.apache.hive.service.cli.thrift.TCLIService$Processor$FetchResults.getResult(TCLIService.java:1538)
        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
        at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
        at org.apache.hadoop.hive.thrift.HadoopThriftAuthBridge$Server$TUGIAssumingProcessor.process(HadoopThriftAuthBridge.java:692)
        at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:286)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

To Reproduce
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1. Configurations
2. Environments
3. Operations
4. See error

Expected behavior
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Additional context
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