wangyum commented on a change in pull request #28032:
URL: https://github.com/apache/spark/pull/28032#discussion_r495693386
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -2038,6 +2038,15 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val REPARTITION_BEFORE_INSERT =
+ buildConf("spark.sql.execution.repartitionBeforeInsert")
Review comment:
Because we cannot prevent users from using inappropriate columns for
partition columns, such as primary keys.
This will generate too many files and affect the stability of NameNode and
the entire cluster.
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