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https://issues.apache.org/jira/browse/SPARK-12061?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li updated SPARK-12061:
----------------------------
Description:
So far, the existing caching mechanisms do not work on dataset operations when
using map/filter with lambda functions. For example,
[code]
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)
}
[code]
was:
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)
}
> [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,
> [code]
> 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)
> }
> [code]
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