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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 org.apache.spark.util
import org.apache.spark.SparkFunSuite
class AccumulatorV2Suite extends SparkFunSuite {
test("LongAccumulator add/avg/sum/count/isZero") {
val acc = new LongAccumulator
assert(acc.isZero)
assert(acc.count == 0)
assert(acc.sum == 0)
assert(acc.avg.isNaN)
acc.add(0)
assert(!acc.isZero)
assert(acc.count == 1)
assert(acc.sum == 0)
assert(acc.avg == 0.0)
acc.add(1)
assert(acc.count == 2)
assert(acc.sum == 1)
assert(acc.avg == 0.5)
// Also test add using non-specialized add function
acc.add(new java.lang.Long(2))
assert(acc.count == 3)
assert(acc.sum == 3)
assert(acc.avg == 1.0)
// Test merging
val acc2 = new LongAccumulator
acc2.add(2)
acc.merge(acc2)
assert(acc.count == 4)
assert(acc.sum == 5)
assert(acc.avg == 1.25)
}
test("DoubleAccumulator add/avg/sum/count/isZero") {
val acc = new DoubleAccumulator
assert(acc.isZero)
assert(acc.count == 0)
assert(acc.sum == 0.0)
assert(acc.avg.isNaN)
acc.add(0.0)
assert(!acc.isZero)
assert(acc.count == 1)
assert(acc.sum == 0.0)
assert(acc.avg == 0.0)
acc.add(1.0)
assert(acc.count == 2)
assert(acc.sum == 1.0)
assert(acc.avg == 0.5)
// Also test add using non-specialized add function
acc.add(new java.lang.Double(2.0))
assert(acc.count == 3)
assert(acc.sum == 3.0)
assert(acc.avg == 1.0)
// Test merging
val acc2 = new DoubleAccumulator
acc2.add(2.0)
acc.merge(acc2)
assert(acc.count == 4)
assert(acc.sum == 5.0)
assert(acc.avg == 1.25)
}
}
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