Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/14690#discussion_r82900810
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala
---
@@ -225,13 +225,16 @@ case class FileSourceScanExec(
}
// These metadata values make scan plans uniquely identifiable for
equality checking.
- override val metadata: Map[String, String] = Map(
- "Format" -> relation.fileFormat.toString,
- "ReadSchema" -> outputSchema.catalogString,
- "Batched" -> supportsBatch.toString,
- "PartitionFilters" -> partitionFilters.mkString("[", ", ", "]"),
- "PushedFilters" -> dataFilters.mkString("[", ", ", "]"),
- "InputPaths" -> relation.location.paths.mkString(", "))
+ override val metadata: Map[String, String] = {
+ def seqToString(seq: Seq[Any]) = seq.mkString("[", ", ", "]")
+ val location = relation.location
+ Map("Format" -> relation.fileFormat.toString,
+ "ReadSchema" -> outputSchema.catalogString,
+ "Batched" -> supportsBatch.toString,
+ "PartitionFilters" -> seqToString(partitionFilters),
+ "PushedFilters" -> seqToString(dataFilters),
+ "Location" -> (location.getClass.getSimpleName +
seqToString(location.rootPaths)))
--- End diff --
> Is it different from location.getRootPaths.length? I guess that would
only be meaningful for Hive-backed tables, but that seems ok.
This is true for relations that have been pruned by
`PruneFileSourcePartitions`. I'm looking for a tidier solution.
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