beliefer commented on code in PR #43259:
URL: https://github.com/apache/spark/pull/43259#discussion_r1354320494
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sql/core/src/main/scala/org/apache/spark/sql/internal/CatalogImpl.scala:
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@@ -760,13 +760,13 @@ class CatalogImpl(sparkSession: SparkSession) extends
Catalog {
}
/**
- * Caches the specified table or view in-memory.
+ * Persist the specified table or view with the default storage level,
Review Comment:
Before this change, `persist` surely write data to disk(means persistent) no
matter how many times the user calls.
After this change, `persist` may not write data to disk if some user change
the default storage level with `only_memory`.
So I think this change make a break change. It seems not change the logic is
better.
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