WeichenXu123 commented on a change in pull request #24473: [SPARK-27534][SQL]
Do not load `content` column in binary data source if it is not selected
URL: https://github.com/apache/spark/pull/24473#discussion_r279115679
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/binaryfile/BinaryFileFormat.scala
##########
@@ -206,6 +188,23 @@ object BinaryFileFormat {
case _ => (_ => true)
}
}
+
+ private[binaryfile] def genPrunedRow(
+ path: String,
+ status: FileStatus,
+ readContent: => Array[Byte],
+ requiredFieldNames: Array[String]): InternalRow = {
+
+ val values = requiredFieldNames.map {
+ case PATH => UTF8String.fromString(path)
+ case LENGTH => status.getLen
+ case MODIFICATION_TIME =>
DateTimeUtils.fromMillis(status.getModificationTime)
+ case CONTENT => readContent
+ case name => throw new RuntimeException(s"Unexcepted field name:
${name}")
+ }
+ InternalRow(values: _*)
Review comment:
What about adding a "keep invalid" option, when file read error, fill
content column "null"?
Now when file loaded error, the datasource loading broken.
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