Description Usage Arguments Details Value Examples
Functions to manage the storage of spark_tbl
objects.
persist
is capable of various storage modes (see details), and
cache
is shorthand for "MEMORY_AND_DISK"
storage level.
1 2 3 4 5 6 7 | cache(.data)
persist(.data, newLevel)
unpersist(.data, blocking = TRUE)
storage_level(.data)
|
.data |
a |
newLevel |
storage level chosen for the persistence. See available options in the details. |
blocking |
boolean, whether to block until all blocks are deleted. |
For details of the supported storage levels, refer to rdd-persistence.
a spark_tbl
1 2 3 4 5 6 7 8 9 10 11 12 13 | ## Not run:
spark_session()
iris_tbl <- spark_tbl(iris)
storage_level(iris_tbl)
persist(iris_tbl, "MEMORY_AND_DISK")
storage_level(iris_tbl)
unpersist(iris_tbl)
storage_level(iris_tbl)
## End(Not run)
|
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