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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package spark
import org.scalatest.FunSuite
import spark.SparkContext._
class SparkContextInfoSuite extends FunSuite with LocalSparkContext {
test("getPersistentRDDs only returns RDDs that are marked as cached") {
sc = new SparkContext("local", "test")
assert(sc.getPersistentRDDs.isEmpty === true)
val rdd = sc.makeRDD(Array(1, 2, 3, 4), 2)
assert(sc.getPersistentRDDs.isEmpty === true)
rdd.cache()
assert(sc.getPersistentRDDs.size === 1)
assert(sc.getPersistentRDDs.values.head === rdd)
}
test("getPersistentRDDs returns an immutable map") {
sc = new SparkContext("local", "test")
val rdd1 = sc.makeRDD(Array(1, 2, 3, 4), 2).cache()
val myRdds = sc.getPersistentRDDs
assert(myRdds.size === 1)
assert(myRdds.values.head === rdd1)
val rdd2 = sc.makeRDD(Array(5, 6, 7, 8), 1).cache()
// getPersistentRDDs should have 2 RDDs, but myRdds should not change
assert(sc.getPersistentRDDs.size === 2)
assert(myRdds.size === 1)
}
test("getRDDStorageInfo only reports on RDDs that actually persist data") {
sc = new SparkContext("local", "test")
val rdd = sc.makeRDD(Array(1, 2, 3, 4), 2).cache()
assert(sc.getRDDStorageInfo.size === 0)
rdd.collect()
assert(sc.getRDDStorageInfo.size === 1)
}
}
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