Java tutorial
/** * 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 com.datatorrent.stram; import java.io.IOException; import java.io.Serializable; import java.net.InetSocketAddress; import java.util.*; import java.util.concurrent.Future; import java.util.concurrent.TimeUnit; import org.apache.hadoop.io.DataInputByteBuffer; import org.apache.hadoop.io.DataOutputByteBuffer; import org.junit.Assert; import org.junit.Before; import org.junit.Rule; import org.junit.Test; import com.google.common.collect.Lists; import com.google.common.collect.Sets; import com.datatorrent.api.AutoMetric; import com.datatorrent.api.Context; import com.datatorrent.api.Context.OperatorContext; import com.datatorrent.api.Context.PortContext; import com.datatorrent.api.DAG.Locality; import com.datatorrent.api.Stats.OperatorStats; import com.datatorrent.api.Stats.OperatorStats.PortStats; import com.datatorrent.api.StatsListener; import com.datatorrent.api.annotation.Stateless; import com.datatorrent.common.metric.AutoMetricBuiltInTransport; import com.datatorrent.common.partitioner.StatelessPartitioner; import com.datatorrent.common.util.AsyncFSStorageAgent; import com.datatorrent.common.util.FSStorageAgent; import com.datatorrent.stram.MockContainer.MockOperatorStats; import com.datatorrent.stram.StreamingContainerAgent.ContainerStartRequest; import com.datatorrent.stram.StreamingContainerManager.ContainerResource; import com.datatorrent.stram.api.AppDataSource; import com.datatorrent.stram.api.Checkpoint; import com.datatorrent.stram.api.ContainerContext; import com.datatorrent.stram.api.OperatorDeployInfo; import com.datatorrent.stram.api.OperatorDeployInfo.InputDeployInfo; import com.datatorrent.stram.api.OperatorDeployInfo.OutputDeployInfo; import com.datatorrent.stram.api.StreamingContainerUmbilicalProtocol.ContainerHeartbeat; import com.datatorrent.stram.api.StreamingContainerUmbilicalProtocol.ContainerHeartbeatResponse; import com.datatorrent.stram.api.StreamingContainerUmbilicalProtocol.ContainerStats; import com.datatorrent.stram.api.StreamingContainerUmbilicalProtocol.OperatorHeartbeat; import com.datatorrent.stram.api.StreamingContainerUmbilicalProtocol.OperatorHeartbeat.DeployState; import com.datatorrent.stram.appdata.AppDataPushAgent; import com.datatorrent.stram.codec.DefaultStatefulStreamCodec; import com.datatorrent.stram.engine.*; import com.datatorrent.stram.plan.TestPlanContext; import com.datatorrent.stram.plan.logical.LogicalPlan; import com.datatorrent.stram.plan.logical.LogicalPlan.OperatorMeta; import com.datatorrent.stram.plan.physical.OperatorStatus.PortStatus; import com.datatorrent.stram.plan.physical.PTContainer; import com.datatorrent.stram.plan.physical.PTOperator; import com.datatorrent.stram.plan.physical.PhysicalPlan; import com.datatorrent.stram.plan.physical.PhysicalPlanTest; import com.datatorrent.stram.support.StramTestSupport; import com.datatorrent.stram.support.StramTestSupport.EmbeddedWebSocketServer; import com.datatorrent.stram.support.StramTestSupport.MemoryStorageAgent; import com.datatorrent.stram.support.StramTestSupport.TestMeta; import com.datatorrent.stram.tuple.Tuple; import com.datatorrent.stram.webapp.LogicalOperatorInfo; import org.apache.commons.lang.StringUtils; import org.codehaus.jettison.json.JSONObject; import org.eclipse.jetty.websocket.WebSocket; public class StreamingContainerManagerTest { @Rule public TestMeta testMeta = new TestMeta(); private LogicalPlan dag; @Before public void setup() { dag = StramTestSupport.createDAG(testMeta); } @Test public void testDeployInfoSerialization() throws Exception { OperatorDeployInfo ndi = new OperatorDeployInfo(); ndi.name = "node1"; ndi.type = OperatorDeployInfo.OperatorType.GENERIC; ndi.id = 1; ndi.contextAttributes = new com.datatorrent.api.Attribute.AttributeMap.DefaultAttributeMap(); ndi.contextAttributes.put(OperatorContext.SPIN_MILLIS, 100); OperatorDeployInfo.InputDeployInfo input = new OperatorDeployInfo.InputDeployInfo(); input.declaredStreamId = "streamToNode"; input.portName = "inputPortNameOnNode"; input.sourceNodeId = 99; ndi.inputs = new ArrayList<OperatorDeployInfo.InputDeployInfo>(); ndi.inputs.add(input); OperatorDeployInfo.OutputDeployInfo output = new OperatorDeployInfo.OutputDeployInfo(); output.declaredStreamId = "streamFromNode"; output.portName = "outputPortNameOnNode"; ndi.outputs = new ArrayList<OperatorDeployInfo.OutputDeployInfo>(); ndi.outputs.add(output); ContainerHeartbeatResponse scc = new ContainerHeartbeatResponse(); scc.deployRequest = Collections.singletonList(ndi); DataOutputByteBuffer out = new DataOutputByteBuffer(); scc.write(out); DataInputByteBuffer in = new DataInputByteBuffer(); in.reset(out.getData()); ContainerHeartbeatResponse clone = new ContainerHeartbeatResponse(); clone.readFields(in); Assert.assertNotNull(clone.deployRequest); Assert.assertEquals(1, clone.deployRequest.size()); OperatorDeployInfo ndiClone = clone.deployRequest.get(0); Assert.assertEquals("name", ndi.name, ndiClone.name); Assert.assertEquals("type", ndi.type, ndiClone.type); String nodeToString = ndi.toString(); Assert.assertTrue(nodeToString.contains(input.portName)); Assert.assertTrue(nodeToString.contains(output.portName)); Assert.assertEquals("contextAttributes " + ndiClone.contextAttributes, Integer.valueOf(100), ndiClone.contextAttributes.get(OperatorContext.SPIN_MILLIS)); } @Test public void testGenerateDeployInfo() { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); GenericTestOperator o3 = dag.addOperator("o3", GenericTestOperator.class); GenericTestOperator o4 = dag.addOperator("o4", GenericTestOperator.class); dag.setOutputPortAttribute(o1.outport, PortContext.BUFFER_MEMORY_MB, 256); dag.addStream("o1.outport", o1.outport, o2.inport1); dag.setOutputPortAttribute(o1.outport, PortContext.SPIN_MILLIS, 99); dag.addStream("o2.outport1", o2.outport1, o3.inport1).setLocality(Locality.CONTAINER_LOCAL); dag.addStream("o3.outport1", o3.outport1, o4.inport1).setLocality(Locality.THREAD_LOCAL); dag.getAttributes().put(LogicalPlan.CONTAINERS_MAX_COUNT, 2); dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); Assert.assertEquals("number operators", 4, dag.getAllOperators().size()); Assert.assertEquals("number root operators", 1, dag.getRootOperators().size()); StreamingContainerManager dnm = new StreamingContainerManager(dag); Assert.assertEquals("number containers", 2, dnm.getPhysicalPlan().getContainers().size()); dnm.assignContainer(new ContainerResource(0, "container1Id", "host1", 1024, 0, null), InetSocketAddress.createUnresolved("host1", 9001)); dnm.assignContainer(new ContainerResource(0, "container2Id", "host2", 1024, 0, null), InetSocketAddress.createUnresolved("host2", 9002)); StreamingContainerAgent sca1 = dnm .getContainerAgent(dnm.getPhysicalPlan().getContainers().get(0).getExternalId()); StreamingContainerAgent sca2 = dnm .getContainerAgent(dnm.getPhysicalPlan().getContainers().get(1).getExternalId()); Assert.assertEquals("", dnm.getPhysicalPlan().getContainers().get(0), sca1.container); Assert.assertEquals("", PTContainer.State.ALLOCATED, sca1.container.getState()); List<OperatorDeployInfo> c1 = sca1.getDeployInfoList(sca1.container.getOperators()); Assert.assertEquals("number operators assigned to c1", 1, c1.size()); OperatorDeployInfo o1DI = getNodeDeployInfo(c1, dag.getMeta(o1)); Assert.assertNotNull(o1 + " assigned to " + sca1.container.getExternalId(), o1DI); Assert.assertEquals("type " + o1DI, OperatorDeployInfo.OperatorType.INPUT, o1DI.type); Assert.assertEquals("inputs " + o1DI.name, 0, o1DI.inputs.size()); Assert.assertEquals("outputs " + o1DI.name, 1, o1DI.outputs.size()); Assert.assertNotNull("contextAttributes " + o1DI.name, o1DI.contextAttributes); OutputDeployInfo c1o1outport = o1DI.outputs.get(0); Assert.assertNotNull("stream connection for container1", c1o1outport); Assert.assertEquals("stream connection for container1", "o1.outport", c1o1outport.declaredStreamId); Assert.assertEquals("stream connects to upstream host", sca1.container.host, c1o1outport.bufferServerHost); Assert.assertEquals("stream connects to upstream port", sca1.container.bufferServerAddress.getPort(), c1o1outport.bufferServerPort); Assert.assertNotNull("contextAttributes " + c1o1outport, c1o1outport.contextAttributes); Assert.assertEquals("contextAttributes " + c1o1outport, Integer.valueOf(99), c1o1outport.contextAttributes.get(PortContext.SPIN_MILLIS)); List<OperatorDeployInfo> c2 = sca2.getDeployInfoList(sca2.container.getOperators()); Assert.assertEquals("number operators assigned to container", 3, c2.size()); OperatorDeployInfo o2DI = getNodeDeployInfo(c2, dag.getMeta(o2)); OperatorDeployInfo o3DI = getNodeDeployInfo(c2, dag.getMeta(o3)); Assert.assertNotNull(dag.getMeta(o2) + " assigned to " + sca2.container.getExternalId(), o2DI); Assert.assertNotNull(dag.getMeta(o3) + " assigned to " + sca2.container.getExternalId(), o3DI); Assert.assertTrue("The buffer server memory for container 1", 256 == sca1.getInitContext().getValue(ContainerContext.BUFFER_SERVER_MB)); Assert.assertTrue("The buffer server memory for container 2", 0 == sca2.getInitContext().getValue(ContainerContext.BUFFER_SERVER_MB)); // buffer server input o2 from o1 InputDeployInfo c2o2i1 = getInputDeployInfo(o2DI, "o1.outport"); Assert.assertNotNull("stream connection for container2", c2o2i1); Assert.assertEquals("stream connects to upstream host", sca1.container.host, c2o2i1.bufferServerHost); Assert.assertEquals("stream connects to upstream port", sca1.container.bufferServerAddress.getPort(), c2o2i1.bufferServerPort); Assert.assertEquals("portName " + c2o2i1, dag.getMeta(o2).getMeta(o2.inport1).getPortName(), c2o2i1.portName); Assert.assertNull("partitionKeys " + c2o2i1, c2o2i1.partitionKeys); Assert.assertEquals("sourceNodeId " + c2o2i1, o1DI.id, c2o2i1.sourceNodeId); Assert.assertEquals("sourcePortName " + c2o2i1, TestGeneratorInputOperator.OUTPUT_PORT, c2o2i1.sourcePortName); Assert.assertNotNull("contextAttributes " + c2o2i1, c2o2i1.contextAttributes); // inline input o3 from o2 InputDeployInfo c2o3i1 = getInputDeployInfo(o3DI, "o2.outport1"); Assert.assertNotNull("input from o2.outport1", c2o3i1); Assert.assertEquals("portName " + c2o3i1, GenericTestOperator.IPORT1, c2o3i1.portName); Assert.assertNotNull("stream connection for container2", c2o3i1); Assert.assertNull("bufferServerHost " + c2o3i1, c2o3i1.bufferServerHost); Assert.assertEquals("bufferServerPort " + c2o3i1, 0, c2o3i1.bufferServerPort); Assert.assertNull("partitionKeys " + c2o3i1, c2o3i1.partitionKeys); Assert.assertEquals("sourceNodeId " + c2o3i1, o2DI.id, c2o3i1.sourceNodeId); Assert.assertEquals("sourcePortName " + c2o3i1, GenericTestOperator.OPORT1, c2o3i1.sourcePortName); Assert.assertEquals("locality " + c2o3i1, Locality.CONTAINER_LOCAL, c2o3i1.locality); // THREAD_LOCAL o4.inport1 OperatorDeployInfo o4DI = getNodeDeployInfo(c2, dag.getMeta(o4)); Assert.assertNotNull(dag.getMeta(o4) + " assigned to " + sca2.container.getExternalId(), o4DI); InputDeployInfo c2o4i1 = getInputDeployInfo(o4DI, "o3.outport1"); Assert.assertNotNull("input from o3.outport1", c2o4i1); Assert.assertEquals("portName " + c2o4i1, GenericTestOperator.IPORT1, c2o4i1.portName); Assert.assertNotNull("stream connection for container2", c2o4i1); Assert.assertNull("bufferServerHost " + c2o4i1, c2o4i1.bufferServerHost); Assert.assertEquals("bufferServerPort " + c2o4i1, 0, c2o4i1.bufferServerPort); Assert.assertNull("partitionKeys " + c2o4i1, c2o4i1.partitionKeys); Assert.assertEquals("sourceNodeId " + c2o4i1, o3DI.id, c2o4i1.sourceNodeId); Assert.assertEquals("sourcePortName " + c2o4i1, GenericTestOperator.OPORT1, c2o4i1.sourcePortName); Assert.assertEquals("locality " + c2o4i1, Locality.THREAD_LOCAL, c2o4i1.locality); } @Test public void testStaticPartitioning() { // // ,---> node2----, // | | // node1---+---> node2----+--->unifier--->node3 // | | // '---> node2----' // GenericTestOperator node1 = dag.addOperator("node1", GenericTestOperator.class); PhysicalPlanTest.PartitioningTestOperator node2 = dag.addOperator("node2", PhysicalPlanTest.PartitioningTestOperator.class); node2.setPartitionCount(3); dag.setAttribute(node2, OperatorContext.SPIN_MILLIS, 10); /* this should not affect anything materially */ dag.setOutputPortAttribute(node2.outport1, PortContext.QUEUE_CAPACITY, 1111); GenericTestOperator node3 = dag.addOperator("node3", GenericTestOperator.class); dag.setInputPortAttribute(node3.inport1, PortContext.QUEUE_CAPACITY, 2222); LogicalPlan.StreamMeta n1n2 = dag.addStream("n1n2", node1.outport1, node2.inport1); LogicalPlan.StreamMeta n2n3 = dag.addStream("n2n3", node2.outport1, node3.inport1); dag.setAttribute(LogicalPlan.CONTAINERS_MAX_COUNT, Integer.MAX_VALUE); MemoryStorageAgent msa = new MemoryStorageAgent(); dag.setAttribute(OperatorContext.STORAGE_AGENT, msa); StreamingContainerManager dnm = new StreamingContainerManager(dag); PhysicalPlan plan = dnm.getPhysicalPlan(); Assert.assertEquals("number containers", 6, plan.getContainers().size()); List<StreamingContainerAgent> containerAgents = Lists.newArrayList(); for (int i = 0; i < plan.getContainers().size(); i++) { containerAgents.add(assignContainer(dnm, "container" + (i + 1))); } PTContainer c = plan.getOperators(dag.getMeta(node1)).get(0).getContainer(); StreamingContainerAgent sca1 = dnm.getContainerAgent(c.getExternalId()); List<OperatorDeployInfo> c1 = getDeployInfo(sca1); Assert.assertEquals("number operators assigned to container", 1, c1.size()); Assert.assertTrue(dag.getMeta(node2) + " assigned to " + sca1.container.getExternalId(), containsNodeContext(c1, dag.getMeta(node1))); List<PTOperator> o2Partitions = plan.getOperators(dag.getMeta(node2)); Assert.assertEquals("number partitions", TestStaticPartitioningSerDe.partitions.length, o2Partitions.size()); for (int i = 0; i < o2Partitions.size(); i++) { String containerId = o2Partitions.get(i).getContainer().getExternalId(); List<OperatorDeployInfo> cc = getDeployInfo(dnm.getContainerAgent(containerId)); Assert.assertEquals("number operators assigned to container", 1, cc.size()); Assert.assertTrue(dag.getMeta(node2) + " assigned to " + containerId, containsNodeContext(cc, dag.getMeta(node2))); // n1n2 in, mergeStream out OperatorDeployInfo ndi = cc.get(0); Assert.assertEquals("type " + ndi, OperatorDeployInfo.OperatorType.GENERIC, ndi.type); Assert.assertEquals("inputs " + ndi, 1, ndi.inputs.size()); Assert.assertEquals("outputs " + ndi, 1, ndi.outputs.size()); InputDeployInfo nidi = ndi.inputs.get(0); Assert.assertEquals("stream " + nidi, n1n2.getName(), nidi.declaredStreamId); Assert.assertEquals("partition for " + containerId, Sets.newHashSet(node2.partitionKeys[i]), nidi.partitionKeys); Assert.assertEquals("number stream codecs for " + nidi, 1, nidi.streamCodecs.size()); } // unifier List<PTOperator> o2Unifiers = plan.getMergeOperators(dag.getMeta(node2)); Assert.assertEquals("number unifiers", 1, o2Unifiers.size()); List<OperatorDeployInfo> cUnifier = getDeployInfo( dnm.getContainerAgent(o2Unifiers.get(0).getContainer().getExternalId())); Assert.assertEquals("number operators " + cUnifier, 1, cUnifier.size()); OperatorDeployInfo mergeNodeDI = getNodeDeployInfo(cUnifier, dag.getMeta(node2).getMeta(node2.outport1).getUnifierMeta()); Assert.assertNotNull("unifier for " + node2, mergeNodeDI); Assert.assertEquals("type " + mergeNodeDI, OperatorDeployInfo.OperatorType.UNIFIER, mergeNodeDI.type); Assert.assertEquals("inputs " + mergeNodeDI, 3, mergeNodeDI.inputs.size()); List<Integer> sourceNodeIds = Lists.newArrayList(); for (InputDeployInfo nidi : mergeNodeDI.inputs) { Assert.assertEquals("streamName " + nidi, n2n3.getName(), nidi.declaredStreamId); String mergePortName = "<merge#" + dag.getMeta(node2).getMeta(node2.outport1).getPortName() + ">"; Assert.assertEquals("portName " + nidi, mergePortName, nidi.portName); Assert.assertNotNull("sourceNodeId " + nidi, nidi.sourceNodeId); Assert.assertNotNull("contextAttributes " + nidi, nidi.contextAttributes); Assert.assertEquals("contextAttributes ", new Integer(1111), nidi.getValue(PortContext.QUEUE_CAPACITY)); sourceNodeIds.add(nidi.sourceNodeId); } for (PTOperator node : dnm.getPhysicalPlan().getOperators(dag.getMeta(node2))) { Assert.assertTrue(sourceNodeIds + " contains " + node.getId(), sourceNodeIds.contains(node.getId())); } Assert.assertEquals("outputs " + mergeNodeDI, 1, mergeNodeDI.outputs.size()); for (OutputDeployInfo odi : mergeNodeDI.outputs) { Assert.assertNotNull("contextAttributes " + odi, odi.contextAttributes); Assert.assertEquals("contextAttributes ", new Integer(2222), odi.getValue(PortContext.QUEUE_CAPACITY)); } try { Object operator = msa.load(mergeNodeDI.id, Stateless.WINDOW_ID); Assert.assertTrue("" + operator, operator instanceof DefaultUnifier); } catch (IOException ex) { throw new RuntimeException(ex); } // node3 container c = plan.getOperators(dag.getMeta(node3)).get(0).getContainer(); List<OperatorDeployInfo> cmerge = getDeployInfo(dnm.getContainerAgent(c.getExternalId())); Assert.assertEquals("number operators " + cmerge, 1, cmerge.size()); OperatorDeployInfo node3DI = getNodeDeployInfo(cmerge, dag.getMeta(node3)); Assert.assertNotNull(dag.getMeta(node3) + " assigned", node3DI); Assert.assertEquals("inputs " + node3DI, 1, node3DI.inputs.size()); InputDeployInfo node3In = node3DI.inputs.get(0); Assert.assertEquals("streamName " + node3In, n2n3.getName(), node3In.declaredStreamId); Assert.assertEquals("portName " + node3In, dag.getMeta(node3).getMeta(node3.inport1).getPortName(), node3In.portName); Assert.assertNotNull("sourceNodeId " + node3DI, node3In.sourceNodeId); Assert.assertEquals("sourcePortName " + node3DI, mergeNodeDI.outputs.get(0).portName, node3In.sourcePortName); } @Test public void testRecoveryOrder() throws Exception { GenericTestOperator node1 = dag.addOperator("node1", GenericTestOperator.class); GenericTestOperator node2 = dag.addOperator("node2", GenericTestOperator.class); GenericTestOperator node3 = dag.addOperator("node3", GenericTestOperator.class); dag.addStream("n1n2", node1.outport1, node2.inport1); dag.addStream("n2n3", node2.outport1, node3.inport1); dag.getAttributes().put(LogicalPlan.CONTAINERS_MAX_COUNT, 2); dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); StreamingContainerManager scm = new StreamingContainerManager(dag); Assert.assertEquals("" + scm.containerStartRequests, 2, scm.containerStartRequests.size()); scm.containerStartRequests.clear(); PhysicalPlan plan = scm.getPhysicalPlan(); List<PTContainer> containers = plan.getContainers(); Assert.assertEquals("" + containers, 2, plan.getContainers().size()); PTContainer c1 = containers.get(0); Assert.assertEquals("c1.operators " + c1.getOperators(), 2, c1.getOperators().size()); PTContainer c2 = containers.get(1); Assert.assertEquals("c2.operators " + c2.getOperators(), 1, c2.getOperators().size()); assignContainer(scm, "container1"); assignContainer(scm, "container2"); StreamingContainerAgent sca1 = scm.getContainerAgent(c1.getExternalId()); StreamingContainerAgent sca2 = scm.getContainerAgent(c2.getExternalId()); Assert.assertEquals("", 0, countState(sca1.container, PTOperator.State.PENDING_UNDEPLOY)); Assert.assertEquals("", 2, countState(sca1.container, PTOperator.State.PENDING_DEPLOY)); scm.scheduleContainerRestart(c1.getExternalId()); Assert.assertEquals("", 0, countState(sca1.container, PTOperator.State.PENDING_UNDEPLOY)); Assert.assertEquals("", 2, countState(sca1.container, PTOperator.State.PENDING_DEPLOY)); Assert.assertEquals("" + scm.containerStartRequests, 1, scm.containerStartRequests.size()); ContainerStartRequest dr = scm.containerStartRequests.peek(); Assert.assertNotNull(dr); Assert.assertEquals("" + sca2.container, 1, countState(sca2.container, PTOperator.State.PENDING_UNDEPLOY)); Assert.assertEquals("" + sca2.container, 0, countState(sca2.container, PTOperator.State.PENDING_DEPLOY)); } @Test public void testRecoveryUpstreamInline() throws Exception { GenericTestOperator o1 = dag.addOperator("o1", GenericTestOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); GenericTestOperator o3 = dag.addOperator("o3", GenericTestOperator.class); dag.addStream("o1o3", o1.outport1, o3.inport1); dag.addStream("o2o3", o2.outport1, o3.inport2); dag.getAttributes().put(LogicalPlan.CONTAINERS_MAX_COUNT, 2); dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); StreamingContainerManager scm = new StreamingContainerManager(dag); PhysicalPlan plan = scm.getPhysicalPlan(); Assert.assertEquals(2, plan.getContainers().size()); plan.getOperators(dag.getMeta(o1)).get(0); Assert.assertEquals(2, plan.getContainers().size()); PTContainer c1 = plan.getContainers().get(0); Assert.assertEquals(Sets.newHashSet(plan.getOperators(dag.getMeta(o1)).get(0), plan.getOperators(dag.getMeta(o3)).get(0)), Sets.newHashSet(c1.getOperators())); PTContainer c2 = plan.getContainers().get(1); assignContainer(scm, "c1"); assignContainer(scm, "c2"); for (PTOperator oper : c1.getOperators()) { Assert.assertEquals("state " + oper, PTOperator.State.PENDING_DEPLOY, oper.getState()); } scm.scheduleContainerRestart(c2.getExternalId()); for (PTOperator oper : c1.getOperators()) { Assert.assertEquals("state " + oper, PTOperator.State.PENDING_UNDEPLOY, oper.getState()); } } @Test public void testCheckpointWindowIds() throws Exception { FSStorageAgent sa = new FSStorageAgent(testMeta.getPath(), null); long[] windowIds = new long[] { 123L, 345L, 234L }; for (long windowId : windowIds) { sa.save(windowId, 1, windowId); } Arrays.sort(windowIds); long[] windowsIds = sa.getWindowIds(1); Arrays.sort(windowsIds); Assert.assertArrayEquals("Saved windowIds", windowIds, windowsIds); for (long windowId : windowIds) { sa.delete(1, windowId); } try { sa.getWindowIds(1); Assert.fail("There should not be any most recently saved windowId!"); } catch (IOException io) { Assert.assertTrue("No State Saved", true); } } @Test public void testAsyncCheckpointWindowIds() throws Exception { AsyncFSStorageAgent sa = new AsyncFSStorageAgent(testMeta.getPath(), null); long[] windowIds = new long[] { 123L, 345L, 234L }; for (long windowId : windowIds) { sa.save(windowId, 1, windowId); sa.copyToHDFS(1, windowId); } Arrays.sort(windowIds); long[] windowsIds = sa.getWindowIds(1); Arrays.sort(windowsIds); Assert.assertArrayEquals("Saved windowIds", windowIds, windowsIds); for (long windowId : windowIds) { sa.delete(1, windowId); } try { sa.getWindowIds(1); Assert.fail("There should not be any most recently saved windowId!"); } catch (IOException io) { Assert.assertTrue("No State Saved", true); } } @Test public void testProcessHeartbeat() throws Exception { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); dag.setAttribute(o1, OperatorContext.STATS_LISTENERS, Arrays.asList(new StatsListener[] { new PartitioningTest.PartitionLoadWatch() })); dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); StreamingContainerManager scm = new StreamingContainerManager(dag); PhysicalPlan plan = scm.getPhysicalPlan(); Assert.assertEquals("number required containers", 1, plan.getContainers().size()); PTOperator o1p1 = plan.getOperators(dag.getMeta(o1)).get(0); // assign container String containerId = "container1"; StreamingContainerAgent sca = scm.assignContainer( new ContainerResource(0, containerId, "localhost", 512, 0, null), InetSocketAddress.createUnresolved("localhost", 0)); Assert.assertNotNull(sca); Assert.assertEquals(PTContainer.State.ALLOCATED, o1p1.getContainer().getState()); Assert.assertEquals(PTOperator.State.PENDING_DEPLOY, o1p1.getState()); ContainerStats cstats = new ContainerStats(containerId); ContainerHeartbeat hb = new ContainerHeartbeat(); hb.setContainerStats(cstats); ContainerHeartbeatResponse chr = scm.processHeartbeat(hb); // get deploy request Assert.assertNotNull(chr.deployRequest); Assert.assertEquals("" + chr.deployRequest, 1, chr.deployRequest.size()); Assert.assertEquals(PTContainer.State.ACTIVE, o1p1.getContainer().getState()); Assert.assertEquals("state " + o1p1, PTOperator.State.PENDING_DEPLOY, o1p1.getState()); // first operator heartbeat OperatorHeartbeat ohb = new OperatorHeartbeat(); ohb.setNodeId(o1p1.getId()); ohb.setState(OperatorHeartbeat.DeployState.ACTIVE); OperatorStats stats = new OperatorStats(); stats.checkpoint = new Checkpoint(2, 0, 0); stats.windowId = 3; stats.outputPorts = Lists.newArrayList(); PortStats ps = new PortStats(TestGeneratorInputOperator.OUTPUT_PORT); ps.bufferServerBytes = 101; ps.tupleCount = 1; stats.outputPorts.add(ps); ohb.windowStats = Lists.newArrayList(stats); cstats.operators.add(ohb); scm.processHeartbeat(hb); // activate operator Assert.assertEquals(PTContainer.State.ACTIVE, o1p1.getContainer().getState()); Assert.assertEquals("state " + o1p1, PTOperator.State.ACTIVE, o1p1.getState()); Assert.assertEquals("tuples " + o1p1, 1, o1p1.stats.totalTuplesEmitted.get()); Assert.assertEquals("tuples " + o1p1, 0, o1p1.stats.totalTuplesProcessed.get()); Assert.assertEquals("window " + o1p1, 3, o1p1.stats.currentWindowId.get()); Assert.assertEquals("port stats", 1, o1p1.stats.outputPortStatusList.size()); PortStatus o1p1ps = o1p1.stats.outputPortStatusList.get(TestGeneratorInputOperator.OUTPUT_PORT); Assert.assertNotNull("port stats", o1p1ps); Assert.assertEquals("port stats", 1, o1p1ps.totalTuples); // second operator heartbeat stats = new OperatorStats(); stats.checkpoint = new Checkpoint(2, 0, 0); stats.windowId = 4; stats.outputPorts = Lists.newArrayList(); ps = new PortStats(TestGeneratorInputOperator.OUTPUT_PORT); ps.bufferServerBytes = 1; ps.tupleCount = 1; stats.outputPorts.add(ps); ohb.windowStats = Lists.newArrayList(stats); cstats.operators.clear(); cstats.operators.add(ohb); scm.processHeartbeat(hb); Assert.assertEquals("tuples " + o1p1, 2, o1p1.stats.totalTuplesEmitted.get()); Assert.assertEquals("window " + o1p1, 4, o1p1.stats.currentWindowId.get()); Assert.assertEquals("statsQueue " + o1p1, 2, o1p1.stats.listenerStats.size()); scm.processEvents(); Assert.assertEquals("statsQueue " + o1p1, 0, o1p1.stats.listenerStats.size()); Assert.assertEquals("lastStats " + o1p1, 2, o1p1.stats.lastWindowedStats.size()); } public static class TestStaticPartitioningSerDe extends DefaultStatefulStreamCodec<Object> { public final static int[] partitions = new int[] { 0, 1, 2 }; @Override public int getPartition(Object o) { if (o instanceof Tuple) { throw new UnsupportedOperationException("should not be called with control tuple"); } return partitions[0]; } } private int countState(PTContainer c, PTOperator.State state) { int count = 0; for (PTOperator o : c.getOperators()) { if (o.getState() == state) { count++; } } return count; } private boolean containsNodeContext(List<OperatorDeployInfo> di, OperatorMeta nodeConf) { return getNodeDeployInfo(di, nodeConf) != null; } public static List<OperatorDeployInfo> getDeployInfo(StreamingContainerAgent sca) { return sca.getDeployInfoList(sca.container.getOperators()); } private static OperatorDeployInfo getNodeDeployInfo(List<OperatorDeployInfo> di, OperatorMeta nodeConf) { for (OperatorDeployInfo ndi : di) { if (nodeConf.getName().equals(ndi.name)) { return ndi; } } return null; } private static InputDeployInfo getInputDeployInfo(OperatorDeployInfo ndi, String streamId) { for (InputDeployInfo in : ndi.inputs) { if (streamId.equals(in.declaredStreamId)) { return in; } } return null; } public static StreamingContainerAgent assignContainer(StreamingContainerManager scm, String containerId) { return scm.assignContainer(new ContainerResource(0, containerId, "localhost", 1024, 0, null), InetSocketAddress.createUnresolved(containerId + "Host", 0)); } @Test public void testValidGenericOperatorDeployInfoType() { GenericTestOperator o1 = dag.addOperator("o1", GenericTestOperator.class); TestGeneratorInputOperator.ValidGenericOperator o2 = dag.addOperator("o2", TestGeneratorInputOperator.ValidGenericOperator.class); dag.addStream("stream1", o1.outport1, o2.input); dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); StreamingContainerManager scm = new StreamingContainerManager(dag); PhysicalPlan physicalPlan = scm.getPhysicalPlan(); List<PTContainer> containers = physicalPlan.getContainers(); for (int i = 0; i < containers.size(); ++i) { assignContainer(scm, "container" + (i + 1)); } OperatorMeta o2Meta = dag.getMeta(o2); PTOperator o2Physical = physicalPlan.getOperators(o2Meta).get(0); String containerId = o2Physical.getContainer().getExternalId(); OperatorDeployInfo o1DeployInfo = getDeployInfo(scm.getContainerAgent(containerId)).get(0); Assert.assertEquals("type " + o1DeployInfo, OperatorDeployInfo.OperatorType.GENERIC, o1DeployInfo.type); } @Test public void testValidInputOperatorDeployInfoType() { TestGeneratorInputOperator.ValidInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.ValidInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); dag.addStream("stream1", o1.outport, o2.inport1); dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); StreamingContainerManager scm = new StreamingContainerManager(dag); PhysicalPlan physicalPlan = scm.getPhysicalPlan(); List<PTContainer> containers = physicalPlan.getContainers(); for (int i = 0; i < containers.size(); ++i) { assignContainer(scm, "container" + (i + 1)); } OperatorMeta o1Meta = dag.getMeta(o1); PTOperator o1Physical = physicalPlan.getOperators(o1Meta).get(0); String containerId = o1Physical.getContainer().getExternalId(); OperatorDeployInfo o1DeployInfo = getDeployInfo(scm.getContainerAgent(containerId)).get(0); Assert.assertEquals("type " + o1DeployInfo, OperatorDeployInfo.OperatorType.INPUT, o1DeployInfo.type); } @Test public void testOperatorShutdown() { dag.setAttribute(OperatorContext.STORAGE_AGENT, new MemoryStorageAgent()); GenericTestOperator o1 = dag.addOperator("o1", GenericTestOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); GenericTestOperator o3 = dag.addOperator("o3", GenericTestOperator.class); dag.addStream("stream1", o1.outport1, o2.inport1); dag.addStream("stream2", o2.outport1, o3.inport1); dag.setAttribute(o2, OperatorContext.PARTITIONER, new StatelessPartitioner<GenericTestOperator>(2)); StreamingContainerManager scm = new StreamingContainerManager(dag); PhysicalPlan physicalPlan = scm.getPhysicalPlan(); Map<PTContainer, MockContainer> mockContainers = new HashMap<>(); for (PTContainer c : physicalPlan.getContainers()) { MockContainer mc = new MockContainer(scm, c); mockContainers.put(c, mc); } // deploy all containers for (Map.Entry<PTContainer, MockContainer> ce : mockContainers.entrySet()) { ce.getValue().deploy(); } for (Map.Entry<PTContainer, MockContainer> ce : mockContainers.entrySet()) { // skip buffer server purge in monitorHeartbeat ce.getKey().bufferServerAddress = null; } PTOperator o1p1 = physicalPlan.getOperators(dag.getMeta(o1)).get(0); MockContainer mc1 = mockContainers.get(o1p1.getContainer()); MockOperatorStats o1p1mos = mc1.stats(o1p1.getId()); o1p1mos.currentWindowId(1).checkpointWindowId(1).deployState(DeployState.ACTIVE); mc1.sendHeartbeat(); PTOperator o2p1 = physicalPlan.getOperators(dag.getMeta(o2)).get(0); MockContainer mc2 = mockContainers.get(o2p1.getContainer()); MockOperatorStats o2p1mos = mc2.stats(o2p1.getId()); o2p1mos.currentWindowId(1).checkpointWindowId(1).deployState(DeployState.ACTIVE); mc2.sendHeartbeat(); Assert.assertEquals("2 partitions", 2, physicalPlan.getOperators(dag.getMeta(o2)).size()); PTOperator o2p2 = physicalPlan.getOperators(dag.getMeta(o2)).get(1); MockContainer mc3 = mockContainers.get(o2p2.getContainer()); MockOperatorStats o2p2mos = mc3.stats(o2p2.getId()); o2p2mos.currentWindowId(1).checkpointWindowId(1).deployState(DeployState.ACTIVE); mc3.sendHeartbeat(); PTOperator o3p1 = physicalPlan.getOperators(dag.getMeta(o3)).get(0); MockContainer mc4 = mockContainers.get(o3p1.getContainer()); MockOperatorStats o3p1mos = mc4.stats(o3p1.getId()); o3p1mos.currentWindowId(1).checkpointWindowId(1).deployState(DeployState.ACTIVE); mc4.sendHeartbeat(); // unifier PTOperator unifier = physicalPlan.getMergeOperators(dag.getMeta(o2)).get(0); MockContainer mc5 = mockContainers.get(unifier.getContainer()); MockOperatorStats unifierp1mos = mc5.stats(unifier.getId()); unifierp1mos.currentWindowId(1).checkpointWindowId(1).deployState(DeployState.ACTIVE); mc5.sendHeartbeat(); o1p1mos.currentWindowId(2).deployState(DeployState.SHUTDOWN); mc1.sendHeartbeat(); scm.monitorHeartbeat(); Assert.assertEquals("committedWindowId", -1, scm.getCommittedWindowId()); scm.monitorHeartbeat(); // committedWindowId updated in next cycle Assert.assertEquals("committedWindowId", 1, scm.getCommittedWindowId()); scm.processEvents(); Assert.assertEquals("containers at committedWindowId=1", 5, physicalPlan.getContainers().size()); // checkpoint window 2 o1p1mos.checkpointWindowId(2); mc1.sendHeartbeat(); scm.monitorHeartbeat(); Assert.assertEquals("committedWindowId", 1, scm.getCommittedWindowId()); o2p1mos.currentWindowId(2).checkpointWindowId(2); o2p2mos.currentWindowId(2).checkpointWindowId(2); o3p1mos.currentWindowId(2).checkpointWindowId(2); unifierp1mos.currentWindowId(2).checkpointWindowId(2); mc2.sendHeartbeat(); mc3.sendHeartbeat(); mc4.sendHeartbeat(); mc5.sendHeartbeat(); scm.monitorHeartbeat(); // Operators are shutdown when both operators reach window Id 2 Assert.assertEquals(0, o1p1.getContainer().getOperators().size()); Assert.assertEquals(0, o2p1.getContainer().getOperators().size()); Assert.assertEquals(0, physicalPlan.getContainers().size()); } private void testDownStreamPartition(Locality locality) throws Exception { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); dag.setAttribute(o2, OperatorContext.PARTITIONER, new StatelessPartitioner<GenericTestOperator>(2)); dag.addStream("o1Output1", o1.outport, o2.inport1).setLocality(locality); int maxContainers = 5; dag.setAttribute(LogicalPlan.CONTAINERS_MAX_COUNT, maxContainers); dag.setAttribute(OperatorContext.STORAGE_AGENT, new StramTestSupport.MemoryStorageAgent()); dag.validate(); PhysicalPlan plan = new PhysicalPlan(dag, new TestPlanContext()); Assert.assertEquals("number of containers", 1, plan.getContainers().size()); PTContainer container1 = plan.getContainers().get(0); Assert.assertEquals("number operators " + container1, 3, container1.getOperators().size()); StramLocalCluster slc = new StramLocalCluster(dag); slc.run(5000); } @Test public void testOIODownstreamPartition() throws Exception { testDownStreamPartition(Locality.THREAD_LOCAL); } @Test public void testContainerLocalDownstreamPartition() throws Exception { testDownStreamPartition(Locality.CONTAINER_LOCAL); } @Test public void testPhysicalPropertyUpdate() throws Exception { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); dag.addStream("o1.outport", o1.outport, o2.inport1); StramLocalCluster lc = new StramLocalCluster(dag); lc.runAsync(); StreamingContainerManager dnmgr = lc.dnmgr; Map<Integer, PTOperator> operatorMap = dnmgr.getPhysicalPlan().getAllOperators(); for (PTOperator p : operatorMap.values()) { StramTestSupport.waitForActivation(lc, p); } dnmgr.setPhysicalOperatorProperty(lc.getPlanOperators(dag.getMeta(o1)).get(0).getId(), "maxTuples", "2"); Future<?> future = dnmgr.getPhysicalOperatorProperty(lc.getPlanOperators(dag.getMeta(o1)).get(0).getId(), "maxTuples", 10000); Object object = future.get(10000, TimeUnit.MILLISECONDS); Assert.assertNotNull(object); @SuppressWarnings("unchecked") Map<String, Object> propertyValue = (Map<String, Object>) object; Assert.assertEquals(2, propertyValue.get("maxTuples")); lc.shutdown(); } private void setupAppDataSourceLogicalPlan(Class<? extends TestAppDataQueryOperator> qClass, Class<? extends TestAppDataSourceOperator> dsClass, Class<? extends TestAppDataResultOperator> rClass) { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); TestAppDataQueryOperator q = dag.addOperator("q", qClass); TestAppDataResultOperator r = dag.addOperator("r", rClass); TestAppDataSourceOperator ds = dag.addOperator("ds", dsClass); q.setAppDataUrl("ws://123.123.123.123:9090/pubsub"); q.setTopic("xyz.query"); r.setAppDataUrl("ws://123.123.123.124:9090/pubsub"); r.setTopic("xyz.result"); dag.addStream("o1-to-ds", o1.outport, ds.inport1); dag.addStream("q-to-ds", q.outport, ds.query); dag.addStream("ds-to-r", ds.result, r.inport); } private void testAppDataSources(boolean appendQIDToTopic) throws Exception { StramLocalCluster lc = new StramLocalCluster(dag); lc.runAsync(); StreamingContainerManager dnmgr = lc.dnmgr; List<AppDataSource> appDataSources = dnmgr.getAppDataSources(); Assert.assertEquals("There should be exactly one data source", 1, appDataSources.size()); AppDataSource ads = appDataSources.get(0); Assert.assertEquals("Data Source name verification", "ds.result", ads.getName()); AppDataSource.QueryInfo query = ads.getQuery(); Assert.assertEquals("Query operator name verification", "q", query.operatorName); Assert.assertEquals("Query topic verification", "xyz.query", query.topic); Assert.assertEquals("Query URL verification", "ws://123.123.123.123:9090/pubsub", query.url); AppDataSource.ResultInfo result = ads.getResult(); Assert.assertEquals("Result operator name verification", "r", result.operatorName); Assert.assertEquals("Result topic verification", "xyz.result", result.topic); Assert.assertEquals("Result URL verification", "ws://123.123.123.124:9090/pubsub", result.url); Assert.assertEquals("Result QID append verification", appendQIDToTopic, result.appendQIDToTopic); lc.shutdown(); } @Test public void testGetAppDataSources1() throws Exception { setupAppDataSourceLogicalPlan(TestAppDataQueryOperator.class, TestAppDataSourceOperator.class, TestAppDataResultOperator.ResultOperator1.class); testAppDataSources(true); } @Test public void testGetAppDataSources2() throws Exception { setupAppDataSourceLogicalPlan(TestAppDataQueryOperator.class, TestAppDataSourceOperator.class, TestAppDataResultOperator.ResultOperator2.class); testAppDataSources(false); } @Test public void testGetAppDataSources3() throws Exception { setupAppDataSourceLogicalPlan(TestAppDataQueryOperator.class, TestAppDataSourceOperator.class, TestAppDataResultOperator.ResultOperator3.class); testAppDataSources(false); } @Test public void testAppDataPush() throws Exception { final String topic = "xyz"; final List<String> messages = new ArrayList<>(); EmbeddedWebSocketServer server = new EmbeddedWebSocketServer(0); server.setWebSocket(new WebSocket.OnTextMessage() { @Override public void onMessage(String data) { messages.add(data); } @Override public void onOpen(WebSocket.Connection connection) { } @Override public void onClose(int closeCode, String message) { } }); try { server.start(); int port = server.getPort(); TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); dag.addStream("o1.outport", o1.outport, o2.inport1); dag.setAttribute(LogicalPlan.METRICS_TRANSPORT, new AutoMetricBuiltInTransport(topic)); dag.setAttribute(LogicalPlan.GATEWAY_CONNECT_ADDRESS, "localhost:" + port); StramLocalCluster lc = new StramLocalCluster(dag); StreamingContainerManager dnmgr = lc.dnmgr; StramAppContext appContext = new StramTestSupport.TestAppContext(dag.getAttributes()); AppDataPushAgent pushAgent = new AppDataPushAgent(dnmgr, appContext); pushAgent.init(); pushAgent.pushData(); Thread.sleep(1000); Assert.assertTrue(messages.size() > 0); pushAgent.close(); JSONObject message = new JSONObject(messages.get(0)); Assert.assertEquals(topic, message.getString("topic")); Assert.assertEquals("publish", message.getString("type")); JSONObject data = message.getJSONObject("data"); Assert.assertTrue(StringUtils.isNotBlank(data.getString("appId"))); Assert.assertTrue(StringUtils.isNotBlank(data.getString("appUser"))); Assert.assertTrue(StringUtils.isNotBlank(data.getString("appName"))); JSONObject logicalOperators = data.getJSONObject("logicalOperators"); for (String opName : new String[] { "o1", "o2" }) { JSONObject opObj = logicalOperators.getJSONObject(opName); Assert.assertTrue(opObj.has("totalTuplesProcessed")); Assert.assertTrue(opObj.has("totalTuplesEmitted")); Assert.assertTrue(opObj.has("tuplesProcessedPSMA")); Assert.assertTrue(opObj.has("tuplesEmittedPSMA")); Assert.assertTrue(opObj.has("latencyMA")); } } finally { server.stop(); } } public static class TestMetricTransport implements AutoMetric.Transport, Serializable { private String prefix; private static List<String> messages = new ArrayList<>(); public TestMetricTransport(String prefix) { this.prefix = prefix; } @Override public void push(String jsonData) throws IOException { messages.add(prefix + ":" + jsonData); } @Override public long getSchemaResendInterval() { return 0; } } @Test public void testCustomMetricsTransport() throws Exception { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); dag.addStream("o1.outport", o1.outport, o2.inport1); dag.setAttribute(LogicalPlan.METRICS_TRANSPORT, new TestMetricTransport("xyz")); StramLocalCluster lc = new StramLocalCluster(dag); StreamingContainerManager dnmgr = lc.dnmgr; StramAppContext appContext = new StramTestSupport.TestAppContext(dag.getAttributes()); AppDataPushAgent pushAgent = new AppDataPushAgent(dnmgr, appContext); pushAgent.init(); pushAgent.pushData(); Assert.assertTrue(TestMetricTransport.messages.size() > 0); pushAgent.close(); String msg = TestMetricTransport.messages.get(0); Assert.assertTrue(msg.startsWith("xyz:")); } public static class HighLatencyTestOperator extends GenericTestOperator { private long firstWindowMillis; private long windowWidthMillis; private long currentWindowId; private long latency; @Override public void setup(OperatorContext context) { firstWindowMillis = System.currentTimeMillis(); // this is an approximation because there is no way to get to the actual value in the DAG windowWidthMillis = context.getValue(Context.DAGContext.STREAMING_WINDOW_SIZE_MILLIS); } @Override public void beginWindow(long windowId) { currentWindowId = windowId; } @Override public void endWindow() { long sleepMillis = latency - (System.currentTimeMillis() - WindowGenerator.getWindowMillis(currentWindowId, firstWindowMillis, windowWidthMillis)); if (sleepMillis > 0) { try { Thread.sleep(sleepMillis); } catch (InterruptedException ex) { // move on } } } public void setLatency(long latency) { this.latency = latency; } } @Test public void testLatency() throws Exception { TestGeneratorInputOperator o1 = dag.addOperator("o1", TestGeneratorInputOperator.class); GenericTestOperator o2 = dag.addOperator("o2", GenericTestOperator.class); HighLatencyTestOperator o3 = dag.addOperator("o3", HighLatencyTestOperator.class); GenericTestOperator o4 = dag.addOperator("o4", GenericTestOperator.class); long latency = 5000; // 5 seconds o3.setLatency(latency); dag.addStream("o1.outport", o1.outport, o2.inport1, o3.inport1); dag.addStream("o2.outport1", o2.outport1, o4.inport1); dag.addStream("o3.outport1", o3.outport1, o4.inport2); dag.setAttribute(Context.DAGContext.STATS_MAX_ALLOWABLE_WINDOWS_LAG, 2); // 1 second StramLocalCluster lc = new StramLocalCluster(dag); StreamingContainerManager dnmgr = lc.dnmgr; lc.runAsync(); Thread.sleep(10000); LogicalOperatorInfo o1Info = dnmgr.getLogicalOperatorInfo("o1"); LogicalOperatorInfo o2Info = dnmgr.getLogicalOperatorInfo("o2"); LogicalOperatorInfo o3Info = dnmgr.getLogicalOperatorInfo("o3"); LogicalOperatorInfo o4Info = dnmgr.getLogicalOperatorInfo("o4"); Assert.assertEquals("Input operator latency must be zero", 0, o1Info.latencyMA); Assert.assertTrue("Latency must be greater than or equal to zero", o2Info.latencyMA >= 0); Assert.assertTrue("Actual latency must be greater than the artificially introduced latency", o3Info.latencyMA > latency); Assert.assertTrue("Latency must be greater than or equal to zero", o4Info.latencyMA >= 0); StreamingContainerManager.CriticalPathInfo criticalPathInfo = dnmgr.getCriticalPathInfo(); Assert.assertArrayEquals( "Critical Path must be the path in the DAG that includes the HighLatencyTestOperator", new Integer[] { o1Info.partitions.iterator().next(), o3Info.partitions.iterator().next(), o4Info.partitions.iterator().next() }, criticalPathInfo.path.toArray()); Assert.assertTrue("Whole DAG latency must be greater than the artificially introduced latency", criticalPathInfo.latency > latency); lc.shutdown(); } }