Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/12801#discussion_r62108004
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/ddl.scala ---
@@ -400,6 +400,10 @@ case class AlterTableDropPartition(
throw new AnalysisException(
"ALTER TABLE DROP PARTITIONS is not allowed for tables defined
using the datasource API")
}
+ if (specs.size > 1) {
+ throw new AnalysisException(
+ s"Alter Table Drop Partition is not allowed to drop more than one
partitions.")
--- End diff --
I see, now we throw an exception here to disallow multiple partitions. So
why does this class even take in a sequence of specs int he first place? It
should just take in a single spec. We should throw the exception in the parser
so the code downstream can be cleaner.
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