[jira] [Created] (SPARK-10623) turning on predicate pushdown throws nonsuch element exception when RDD is empty

["Ram Sriharsha (JIRA)" <ji...@apache.org>]

Ram Sriharsha created SPARK-10623:
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             Summary: turning on predicate pushdown throws nonsuch element exception when RDD is empty 
                 Key: SPARK-10623
                 URL: https://issues.apache.org/jira/browse/SPARK-10623
             Project: Spark
          Issue Type: Bug
            Reporter: Ram Sriharsha


Turning on predicate pushdown for ORC datasources results in a NoSuchElementException:

scala> val df = sqlContext.sql("SELECT name FROM people WHERE age < 15")
df: org.apache.spark.sql.DataFrame = [name: string]

scala> sqlContext.setConf("spark.sql.orc.filterPushdown", "true")

scala> df.explain
== Physical Plan ==
java.util.NoSuchElementException

Disabling the pushdown makes things work again:

scala> sqlContext.setConf("spark.sql.orc.filterPushdown", "false")

scala> df.explain
== Physical Plan ==
Project [name#6]
 Filter (age#7 < 15)
  Scan OrcRelation[file:/home/mydir/spark-1.5.0-SNAPSHOT/test/people][name#6,age#7]



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