[Bug] NullPointer encountered when using paimon-spark

[liyubin117]

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• [x] I searched in the issues and found nothing similar.

Paimon version

paimon-spark-3.3-0.9 spark: 3.3.2

Compute Engine

java.lang.NullPointerException
        at org.apache.paimon.spark.SparkInternalRow.fromPaimon(SparkInternalRow.java:274)
        at org.apache.paimon.spark.SparkInternalRow.getUTF8String(SparkInternalRow.java:157)
        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$10.hasNext(Iterator.scala:460)
        at org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:168)
        at org.apache.spark.shuffle.ShuffleWriteProcessor.write(ShuffleWriteProcessor.scala:59)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:52)
        at org.apache.spark.scheduler.Task.run(Task.scala:136)
        at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:548)
        at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1504)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:551)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:750)

Minimal reproduce step

todo

What doesn't meet your expectations?

NullPointer

Anything else?

No response

Are you willing to submit a PR?

• [ ] I'm willing to submit a PR!

[yangjf2019]

Hi @liyubin117 can you left more information for this problem,such as codes,logs,environment and so on. So that we reproduce it.