viirya commented on a change in pull request #27690:
URL: https://github.com/apache/spark/pull/27690#discussion_r439623063
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File path:
sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/SaveAsHiveFile.scala
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@@ -97,7 +99,34 @@ private[hive] trait SaveAsHiveFile extends
DataWritingCommand {
options = Map.empty)
}
- protected def getExternalTmpPath(
+ // Mostly copied from Context.java#getMRTmpPath of Hive 2.3.
+ // Visible for testing.
+ private[execution] def getMRTmpPath(
+ hadoopConf: Configuration,
+ sessionScratchDir: String,
+ scratchDir: String): Path = {
+
+ // Hive's getMRTmpPath uses nonLocalScratchPath + '-mr-10000',
+ // which is ruled by 'hive.exec.scratchdir' including file system.
+ // This is the same as Spark's #oldVersionExternalTempPath.
+ // Only difference between #oldVersionExternalTempPath and Hive 2.3.0's is
HIVE-7090.
+ // HIVE-7090 added user_name/session_id on top of 'hive.exec.scratchdir'
+ // Here it uses session_path unless it's emtpy, otherwise uses scratchDir.
+ val sessionPath = if (!sessionScratchDir.isEmpty) sessionScratchDir else
scratchDir
+ val mrScratchDir = oldVersionExternalTempPath(new Path(sessionPath),
hadoopConf, sessionPath)
Review comment:
Any benefit to use sessionScratchDir here except for following Hive?
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