[SPARK-10623] NoSuchElementException thrown when ORC predicate push-down is turned on

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.4.0, 1.4.1, 1.5.0
• Fix Version/s: 1.5.1, 1.6.0
• Component/s: SQL
• Target Version/s: 1.5.1, 1.6.0
• Assignee: Zhan Zhang
• Reporter: Ram Sriharsha
• Created: 15/Sep/15 19:01
• Updated: 19/Sep/15 01:47
• Resolved: 19/Sep/15 01:47

Description

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]

Issue Links

• links to: [Github] Pull Request #8783 (zhzhan)
• links to: [Github] Pull Request #8799 (liancheng)