Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/15516#discussion_r83921132
--- Diff: R/pkg/inst/tests/testthat/test_sparkSQL.R ---
@@ -795,6 +795,8 @@ test_that("cache(), persist(), and unpersist() on a
DataFrame", {
persist(df, "MEMORY_AND_DISK")
expect_true(df@env$isCached)
+ expect_equal(storageLevel(df), "StorageLevel(disk, memory, deserialized,
1 replicas)")
--- End diff --
so the output of this doesn't say "MEMORY_AND_DISK"? Should we have that in
addition to "StorageLevel(disk, memory, deserialized, 1 replicas)"? It might be
confusing to set "MEMORY_AND_DISK" and get "StorageLevel(disk, memory,
deserialized, 1 replicas)" back?
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