maropu commented on a change in pull request #28123: [SPARK-31350][SQL]
Coalesce bucketed tables for join if applicable
URL: https://github.com/apache/spark/pull/28123#discussion_r406571439
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala
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@@ -309,7 +328,8 @@ case class FileSourceScanExec(
files.map(_.getPath.getName).groupBy(file =>
BucketingUtils.getBucketId(file))
val singleFilePartitions = bucketToFilesGrouping.forall(p =>
p._2.length <= 1)
- if (singleFilePartitions) {
+ // TODO Sort order is currently ignored if buckets are coalesced.
Review comment:
Is this related to https://issues.apache.org/jira/browse/SPARK-24528 ?
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