scala - How to uncache RDD?

Question

I used cache() to cache the data in memory but I realized to see the performance without cached data I need to uncache it to remove data from memory:

rdd.cache();
//doing some computation
...
rdd.uncache()

but I got the error said:

value uncache is not a member of org.apache.spark.rdd.RDD[(Int, Array[Float])]

I don't know how to do the uncache then!

Answer 1

RDD can be uncached using unpersist()

rdd.unpersist()

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