Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/16938#discussion_r103531754
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala
---
@@ -412,15 +412,28 @@ case class DataSource(
// 2. Output path must be a legal HDFS style file system path;
// 3. It's OK that the output path doesn't exist yet;
val allPaths = paths ++ caseInsensitiveOptions.get("path")
- val outputPath = if (allPaths.length == 1) {
+ val (outputPath, pathExists) = if (allPaths.length == 1) {
val path = new Path(allPaths.head)
val fs =
path.getFileSystem(sparkSession.sessionState.newHadoopConf())
- path.makeQualified(fs.getUri, fs.getWorkingDirectory)
+ val qualifiedOutputPath = path.makeQualified(fs.getUri,
fs.getWorkingDirectory)
+ (qualifiedOutputPath, fs.exists(qualifiedOutputPath))
} else {
throw new IllegalArgumentException("Expected exactly one path to be
specified, but " +
s"got: ${allPaths.mkString(", ")}")
}
+ if (pathExists) {
--- End diff --
why we move this check from `InsertIntoHadoopFsRelationCommand` to here?
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