[jira] [Created] (SPARK-3138) sqlContext.parquetFile should be able to take a single file as parameter

["Teng Qiu (JIRA)" <ji...@apache.org>]

Teng Qiu created SPARK-3138:
-------------------------------

             Summary: sqlContext.parquetFile should be able to take a single file as parameter
                 Key: SPARK-3138
                 URL: https://issues.apache.org/jira/browse/SPARK-3138
             Project: Spark
          Issue Type: Bug
          Components: SQL
            Reporter: Teng Qiu


http://apache-spark-user-list.1001560.n3.nabble.com/sqlContext-parquetFile-path-fails-if-path-is-a-file-but-succeeds-if-a-directory-tp12345.html

to reproduce this issue in spark-shell
{code:java}
val sqlContext = new org.apache.spark.sql.SQLContext(sc)
import sqlContext._
import org.apache.hadoop.fs.{FileSystem, Path}

case class TestRDDEntry(key: Int, value: String)

val path = "/tmp/parquet_test"
sc.parallelize((1 to 100)).map(i => TestRDDEntry(i, s"val_$i")).coalesce(1).saveAsParquetFile(path)

val fsPath = new Path(path)
val fs: FileSystem = fsPath.getFileSystem(sc.hadoopConfiguration)
val children = fs.listStatus(fsPath).filter(_.getPath.getName.endsWith(".parquet"))

val readFile = sqlContext.parquetFile(path + "/" + children(0).getPath.getName)
{code}

it throws exception:

{code}
java.lang.IllegalArgumentException: Expected file:/tmp/parquet_test/part-r-1.parquet for be a directory with Parquet files/metadata
        at org.apache.spark.sql.parquet.ParquetTypesConverter$.readMetaData(ParquetTypes.scala:374)
        at org.apache.spark.sql.parquet.ParquetTypesConverter$.readSchemaFromFile(ParquetTypes.scala:414)
        at org.apache.spark.sql.parquet.ParquetRelation.<init>(ParquetRelation.scala:66)
{code}



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