[SPARK-7737] parquet schema discovery should not fail because of empty _temporary dir

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Fix Version/s: 1.4.0
• Component/s: SQL
• Target Version/s: 1.4.0
• Assignee: Yin Huai
• Reporter: Yin Huai
• Created: 19/May/15 16:29
• Updated: 28/May/15 11:42
• Resolved: 21/May/15 23:13

Description

Parquet schema discovery will fail when the dir is like

/partitions5k/i=2/_SUCCESS
/partitions5k/i=2/_temporary/
/partitions5k/i=2/part-r-00001.gz.parquet
/partitions5k/i=2/part-r-00002.gz.parquet
/partitions5k/i=2/part-r-00003.gz.parquet
/partitions5k/i=2/part-r-00004.gz.parquet

java.lang.AssertionError: assertion failed: Conflicting partition column names detected:
	
	at scala.Predef$.assert(Predef.scala:179)
	at org.apache.spark.sql.sources.PartitioningUtils$.resolvePartitions(PartitioningUtils.scala:159)
	at org.apache.spark.sql.sources.PartitioningUtils$.parsePartitions(PartitioningUtils.scala:71)
	at org.apache.spark.sql.sources.HadoopFsRelation.org$apache$spark$sql$sources$HadoopFsRelation$$discoverPartitions(interfaces.scala:468)
	at org.apache.spark.sql.sources.HadoopFsRelation$$anonfun$partitionSpec$3.apply(interfaces.scala:424)
	at org.apache.spark.sql.sources.HadoopFsRelation$$anonfun$partitionSpec$3.apply(interfaces.scala:423)
	at scala.Option.getOrElse(Option.scala:120)
	at org.apache.spark.sql.sources.HadoopFsRelation.partitionSpec(interfaces.scala:422)
	at org.apache.spark.sql.sources.HadoopFsRelation.schema$lzycompute(interfaces.scala:482)
	at org.apache.spark.sql.sources.HadoopFsRelation.schema(interfaces.scala:480)
	at org.apache.spark.sql.sources.LogicalRelation.<init>(LogicalRelation.scala:30)
	at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:134)
	at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:118)
	at org.apache.spark.sql.SQLContext.load(SQLContext.scala:1135)

1.3 works fine.

Issue Links

• links to: [Github] Pull Request #6329 (yhuai)