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Spark Exception - java.lang.NullPointerException

By Dinesh

 

java.lang.NullPointerException

        at org.apache.spark.sql.execution.datasources.orc.OrcColumnVector.getUTF8String(OrcColumnVector.java:167)

        at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage46.processNext(Unknown Source)

        at org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)

        at org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$10$$anon$1.hasNext(WholeStageCodegenExec.scala:614)

        at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:409)

        at org.apache.spark.shuffle.sort.UnsafeShuffleWriter.write(UnsafeShuffleWriter.java:187)

        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:96)

        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:53)

        at org.apache.spark.scheduler.Task.run(Task.scala:109)

        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:345)

        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:748)



Analysis - This might occur because of data type mismatch between Hive Table & ORC file.

Solution - Correct the data type to match between Hive Table & ORC

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