java.lang.NullPointerException

Stack Overflow | faustineinsun | 8 months ago
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    Spark aggregateByKey on Dataset

    Stack Overflow | 8 months ago | faustineinsun
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.spark.sql.Dataset.schema()
    2. Spark Project SQL
      Dataset.show
      1. org.apache.spark.sql.Dataset.schema(Dataset.scala:393)
      2. org.apache.spark.sql.Dataset.toDF(Dataset.scala:339)
      3. org.apache.spark.sql.Dataset.showString(Dataset.scala:239)
      4. org.apache.spark.sql.Dataset.show(Dataset.scala:526)
      5. org.apache.spark.sql.Dataset.show(Dataset.scala:486)
      6. org.apache.spark.sql.Dataset.show(Dataset.scala:495)
      6 frames