Xiao Li created SPARK-12061:
-------------------------------
Summary: [SQL] Dataset API: Adding Persist for Map/filter with
Lambda Functions
Key: SPARK-12061
URL: https://issues.apache.org/jira/browse/SPARK-12061
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.6.0
Reporter: Xiao Li
So far, the existing caching mechanisms do not work on dataset operations when
using map/filter with lambda functions. For example,
test("persist and then map/filter with lambda functions") {
val f = (i: Int) => i + 1
val ds = Seq(1, 2, 3).toDS()
val mapped = ds.map(f)
mapped.cache()
val mapped2 = ds.map(f)
assertCached(mapped2)
}
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