Terry Kim 0f1a18370a [SPARK-33817][SQL] CACHE TABLE uses a logical plan when caching a query to avoid creating a dataframe ... ### What changes were proposed in this pull request? This PR proposes to update `CACHE TABLE` to use a `LogicalPlan` when caching a query to avoid creating a `DataFrame` as suggested here: https://github.com/apache/spark/pull/30743#discussion_r543123190 For reference, `UNCACHE TABLE` also uses `LogicalPlan`: 0c12900120/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/CacheTableExec.scala (L91-L98) ### Why are the changes needed? To avoid creating an unnecessary dataframe and make it consistent with `uncacheQuery` used in `UNCACHE TABLE`. ### Does this PR introduce _any_ user-facing change? No, just internal changes. ### How was this patch tested? Existing tests since this is an internal refactoring change. Closes #30815 from imback82/cache_with_logical_plan. Authored-by: Terry Kim <yuminkim@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>		2020-12-18 04:30:15 +00:00
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benchmarks	[SPARK-30413][SQL] Avoid WrappedArray roundtrip in GenericArrayData constructor, plus related optimization in ParquetMapConverter	2020-01-19 19:12:19 -08:00
src	[SPARK-33817][SQL] CACHE TABLE uses a logical plan when caching a query to avoid creating a dataframe	2020-12-18 04:30:15 +00:00
pom.xml	[SPARK-33662][BUILD] Setting version to 3.2.0-SNAPSHOT	2020-12-04 14:10:42 -08:00