spark TextBasedFileScan 源码
spark TextBasedFileScan 代码
文件路径:/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/TextBasedFileScan.scala
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.sql.execution.datasources.v2
import scala.collection.JavaConverters._
import org.apache.hadoop.fs.Path
import org.apache.hadoop.io.compress.CompressionCodecFactory
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.util.CaseInsensitiveStringMap
import org.apache.spark.util.Utils
abstract class TextBasedFileScan(
sparkSession: SparkSession,
options: CaseInsensitiveStringMap) extends FileScan {
@transient private lazy val codecFactory: CompressionCodecFactory = new CompressionCodecFactory(
sparkSession.sessionState.newHadoopConfWithOptions(options.asScala.toMap))
override def isSplitable(path: Path): Boolean = Utils.isFileSplittable(path, codecFactory)
override def getFileUnSplittableReason(path: Path): String = {
assert(!isSplitable(path))
"the file is compressed by unsplittable compression codec"
}
}
相关信息
相关文章
0
赞
- 所属分类: 前端技术
- 本文标签:
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦