Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10604#discussion_r49809926
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/bucket.scala
---
@@ -56,3 +54,16 @@ private[sql] abstract class BucketedOutputWriterFactory
extends OutputWriterFact
context: TaskAttemptContext): OutputWriter =
throw new UnsupportedOperationException("use bucket version")
}
+
+private[sql] object BucketingUtils {
+ // The file name of bucketed data should have 3 parts:
+ // 1. some other information in the head of file name, ends with `-`
+ // 2. bucket id part, some numbers
+ // 3. optional file extension part, in the tail of file name, starts
with `.`
+ private val bucketedFileName = """.*-(\d+)(?:\..*)?$""".r
--- End diff --
it'd be useful to have an example of a file name in the comment here
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