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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.sql.execution.streaming
import java.util.concurrent.{CountDownLatch, TimeUnit}
import org.apache.spark.SparkFunSuite
import org.apache.spark.sql.ProcessingTime
import org.apache.spark.util.ManualClock
class ProcessingTimeExecutorSuite extends SparkFunSuite {
test("nextBatchTime") {
val processingTimeExecutor = ProcessingTimeExecutor(ProcessingTime(100))
assert(processingTimeExecutor.nextBatchTime(1) === 100)
assert(processingTimeExecutor.nextBatchTime(99) === 100)
assert(processingTimeExecutor.nextBatchTime(100) === 100)
assert(processingTimeExecutor.nextBatchTime(101) === 200)
assert(processingTimeExecutor.nextBatchTime(150) === 200)
}
private def testBatchTermination(intervalMs: Long): Unit = {
var batchCounts = 0
val processingTimeExecutor = ProcessingTimeExecutor(ProcessingTime(intervalMs))
processingTimeExecutor.execute(() => {
batchCounts += 1
// If the batch termination works well, batchCounts should be 3 after `execute`
batchCounts < 3
})
assert(batchCounts === 3)
}
test("batch termination") {
testBatchTermination(0)
testBatchTermination(10)
}
test("notifyBatchFallingBehind") {
val clock = new ManualClock()
@volatile var batchFallingBehindCalled = false
val latch = new CountDownLatch(1)
val t = new Thread() {
override def run(): Unit = {
val processingTimeExecutor = new ProcessingTimeExecutor(ProcessingTime(100), clock) {
override def notifyBatchFallingBehind(realElapsedTimeMs: Long): Unit = {
batchFallingBehindCalled = true
}
}
processingTimeExecutor.execute(() => {
latch.countDown()
clock.waitTillTime(200)
false
})
}
}
t.start()
// Wait until the batch is running so that we don't call `advance` too early
assert(latch.await(10, TimeUnit.SECONDS), "the batch has not yet started in 10 seconds")
clock.advance(200)
t.join()
assert(batchFallingBehindCalled === true)
}
}
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