Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17644#discussion_r116359799
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala
---
@@ -408,9 +425,7 @@ private[hive] class HiveClientImpl(
},
schema = schema,
partitionColumnNames = partCols.map(_.name),
- // We can not populate bucketing information for Hive tables as
Spark SQL has a different
- // implementation of hash function from Hive.
- bucketSpec = None,
+ bucketSpec = bucketSpec,
--- End diff --
please add a comment to say that, for data source tables, we will always
overwrite the bucket spec in `HiveExternalCatalog` with the bucketing
information in table properties.
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