org.apache.spark.sql.internal.HiveSerDe.scala Maven / Gradle / Ivy
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* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
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* See the License for the specific language governing permissions and
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package org.apache.spark.sql.internal
import java.util.Locale
import org.apache.spark.sql.catalyst.catalog.CatalogStorageFormat
case class HiveSerDe(
inputFormat: Option[String] = None,
outputFormat: Option[String] = None,
serde: Option[String] = None)
object HiveSerDe {
val serdeMap = Map(
"sequencefile" ->
HiveSerDe(
inputFormat = Option("org.apache.hadoop.mapred.SequenceFileInputFormat"),
outputFormat = Option("org.apache.hadoop.mapred.SequenceFileOutputFormat"),
serde = Option("org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe")),
"rcfile" ->
HiveSerDe(
inputFormat = Option("org.apache.hadoop.hive.ql.io.RCFileInputFormat"),
outputFormat = Option("org.apache.hadoop.hive.ql.io.RCFileOutputFormat"),
serde = Option("org.apache.hadoop.hive.serde2.columnar.LazyBinaryColumnarSerDe")),
"orc" ->
HiveSerDe(
inputFormat = Option("org.apache.hadoop.hive.ql.io.orc.OrcInputFormat"),
outputFormat = Option("org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat"),
serde = Option("org.apache.hadoop.hive.ql.io.orc.OrcSerde")),
"parquet" ->
HiveSerDe(
inputFormat = Option("org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat"),
outputFormat = Option("org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat"),
serde = Option("org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe")),
"textfile" ->
HiveSerDe(
inputFormat = Option("org.apache.hadoop.mapred.TextInputFormat"),
outputFormat = Option("org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat"),
serde = Option("org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe")),
"avro" ->
HiveSerDe(
inputFormat = Option("org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat"),
outputFormat = Option("org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat"),
serde = Option("org.apache.hadoop.hive.serde2.avro.AvroSerDe")))
/**
* Get the Hive SerDe information from the data source abbreviation string or classname.
*
* @param source Currently the source abbreviation can be one of the following:
* SequenceFile, RCFile, ORC, PARQUET, and case insensitive.
* @return HiveSerDe associated with the specified source
*/
def sourceToSerDe(source: String): Option[HiveSerDe] = {
val key = source.toLowerCase(Locale.ROOT) match {
case s if s.startsWith("org.apache.spark.sql.parquet") => "parquet"
case s if s.startsWith("org.apache.spark.sql.orc") => "orc"
case s if s.startsWith("org.apache.spark.sql.hive.orc") => "orc"
case s if s.equals("orcfile") => "orc"
case s if s.equals("parquetfile") => "parquet"
case s if s.equals("avrofile") => "avro"
case s => s
}
serdeMap.get(key)
}
def getDefaultStorage(conf: SQLConf): CatalogStorageFormat = {
val defaultStorageType = conf.getConfString("hive.default.fileformat", "textfile")
val defaultHiveSerde = sourceToSerDe(defaultStorageType)
CatalogStorageFormat.empty.copy(
inputFormat = defaultHiveSerde.flatMap(_.inputFormat)
.orElse(Some("org.apache.hadoop.mapred.TextInputFormat")),
outputFormat = defaultHiveSerde.flatMap(_.outputFormat)
.orElse(Some("org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat")),
serde = defaultHiveSerde.flatMap(_.serde)
.orElse(Some("org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe")))
}
}