Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/9421#discussion_r44324452
--- Diff:
extras/kinesis-asl/src/test/scala/org/apache/spark/streaming/kinesis/KinesisCheckpointerSuite.scala
---
@@ -0,0 +1,156 @@
+/*
+ * 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.streaming.kinesis
+
+import java.util.concurrent.{TimeoutException, ExecutorService}
+
+import scala.concurrent.{Await, ExecutionContext, Future}
+import scala.concurrent.duration._
+import scala.language.postfixOps
+
+import
com.amazonaws.services.kinesis.clientlibrary.interfaces.IRecordProcessorCheckpointer
+import org.mockito.Matchers._
+import org.mockito.Mockito._
+import org.mockito.invocation.InvocationOnMock
+import org.mockito.stubbing.Answer
+import org.scalatest.{PrivateMethodTester, BeforeAndAfterEach}
+import org.scalatest.concurrent.Eventually
+import org.scalatest.concurrent.Eventually._
+import org.scalatest.mock.MockitoSugar
+
+import org.apache.spark.streaming.{Duration, TestSuiteBase}
+import org.apache.spark.util.ManualClock
+
+class KinesisCheckpointerSuite extends TestSuiteBase
+ with MockitoSugar
+ with BeforeAndAfterEach
+ with PrivateMethodTester
+ with Eventually {
+
+ private val workerId = "dummyWorkerId"
+ private val shardId = "dummyShardId"
+ private val seqNum = "123"
+ private val otherSeqNum = "245"
+ private val checkpointInterval = Duration(10)
+ private val someSeqNum = Some(seqNum)
+ private val someOtherSeqNum = Some(otherSeqNum)
+
+ private var receiverMock: KinesisReceiver[Array[Byte]] = _
+ private var checkpointerMock: IRecordProcessorCheckpointer = _
+ private var kinesisCheckpointer: KinesisCheckpointer = _
+ private var clock: ManualClock = _
+
+ private val checkpoint = PrivateMethod[Unit]('checkpoint)
+
+ override def beforeEach(): Unit = {
+ receiverMock = mock[KinesisReceiver[Array[Byte]]]
+ checkpointerMock = mock[IRecordProcessorCheckpointer]
+ clock = new ManualClock()
+ kinesisCheckpointer = new KinesisCheckpointer(receiverMock,
checkpointInterval, workerId, clock)
+ }
+
+ test("checkpoint is not called twice for the same sequence number") {
+
when(receiverMock.getLatestSeqNumToCheckpoint(shardId)).thenReturn(someSeqNum)
+ kinesisCheckpointer.invokePrivate(checkpoint(shardId,
checkpointerMock))
+ kinesisCheckpointer.invokePrivate(checkpoint(shardId,
checkpointerMock))
+
+ verify(checkpointerMock, times(1)).checkpoint(anyString())
+ }
+
+ test("checkpoint is called after sequence number increases") {
+ when(receiverMock.getLatestSeqNumToCheckpoint(shardId))
+ .thenReturn(someSeqNum).thenReturn(someOtherSeqNum)
+ kinesisCheckpointer.invokePrivate(checkpoint(shardId,
checkpointerMock))
+ kinesisCheckpointer.invokePrivate(checkpoint(shardId,
checkpointerMock))
+
+ verify(checkpointerMock, times(1)).checkpoint(seqNum)
+ verify(checkpointerMock, times(1)).checkpoint(otherSeqNum)
+ }
+
+ test("should checkpoint if we have exceeded the checkpoint interval") {
+ when(receiverMock.getLatestSeqNumToCheckpoint(shardId))
+ .thenReturn(someSeqNum).thenReturn(someOtherSeqNum)
+
+ kinesisCheckpointer.setCheckpointer(shardId, checkpointerMock)
+ clock.advance(5 * checkpointInterval.milliseconds)
+
+ eventually(timeout(1 second)) {
+ verify(checkpointerMock, times(1)).checkpoint(seqNum)
+ verify(checkpointerMock, times(1)).checkpoint(otherSeqNum)
+ }
+ }
+
+ test("shouldn't checkpoint if we have not exceeded the checkpoint
interval") {
+
when(receiverMock.getLatestSeqNumToCheckpoint(shardId)).thenReturn(someSeqNum)
+
+ kinesisCheckpointer.setCheckpointer(shardId, checkpointerMock)
+ clock.advance(checkpointInterval.milliseconds / 2)
--- End diff --
Sorry, never mind. This is a manually clock. It should be safe.
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