| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.hdds.scm.block; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.ArrayList; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ExecutorService; |
| |
| import org.apache.hadoop.hdds.HddsConfigKeys; |
| import org.apache.hadoop.hdds.conf.OzoneConfiguration; |
| import org.apache.hadoop.hdds.protocol.proto.HddsProtos; |
| import org.apache.hadoop.hdds.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMCommandProto; |
| import org.apache.hadoop.hdds.scm.ScmConfigKeys; |
| import org.apache.hadoop.hdds.scm.TestUtils; |
| import org.apache.hadoop.hdds.scm.node.NodeStatus; |
| import org.apache.hadoop.hdds.scm.container.CloseContainerEventHandler; |
| import org.apache.hadoop.hdds.scm.container.ContainerID; |
| import org.apache.hadoop.hdds.scm.container.MockNodeManager; |
| import org.apache.hadoop.hdds.scm.container.SCMContainerManager; |
| import org.apache.hadoop.hdds.scm.container.common.helpers.AllocatedBlock; |
| import org.apache.hadoop.hdds.scm.container.common.helpers.ExcludeList; |
| import org.apache.hadoop.hdds.scm.events.SCMEvents; |
| import org.apache.hadoop.hdds.scm.metadata.SCMMetadataStore; |
| import org.apache.hadoop.hdds.scm.metadata.SCMMetadataStoreImpl; |
| import org.apache.hadoop.hdds.scm.pipeline.MockRatisPipelineProvider; |
| import org.apache.hadoop.hdds.scm.pipeline.Pipeline; |
| import org.apache.hadoop.hdds.scm.pipeline.PipelineID; |
| import org.apache.hadoop.hdds.scm.pipeline.PipelineProvider; |
| import org.apache.hadoop.hdds.scm.pipeline.SCMPipelineManager; |
| import org.apache.hadoop.hdds.scm.safemode.SCMSafeModeManager; |
| import org.apache.hadoop.hdds.scm.server.SCMConfigurator; |
| import org.apache.hadoop.hdds.scm.server.StorageContainerManager; |
| import org.apache.hadoop.hdds.server.events.EventHandler; |
| import org.apache.hadoop.hdds.server.events.EventPublisher; |
| import org.apache.hadoop.hdds.server.events.EventQueue; |
| import org.apache.hadoop.ozone.OzoneConsts; |
| import org.apache.hadoop.ozone.container.common.SCMTestUtils; |
| import org.apache.hadoop.ozone.protocol.commands.CommandForDatanode; |
| import org.apache.hadoop.ozone.protocol.commands.CreatePipelineCommand; |
| import org.apache.hadoop.test.GenericTestUtils; |
| |
| import static org.apache.hadoop.ozone.OzoneConsts.GB; |
| import static org.apache.hadoop.ozone.OzoneConsts.MB; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| import org.junit.rules.TemporaryFolder; |
| |
| /** |
| * Tests for SCM Block Manager. |
| */ |
| public class TestBlockManager { |
| private StorageContainerManager scm; |
| private SCMContainerManager mapping; |
| private MockNodeManager nodeManager; |
| private SCMPipelineManager pipelineManager; |
| private BlockManagerImpl blockManager; |
| private final static long DEFAULT_BLOCK_SIZE = 128 * MB; |
| private static HddsProtos.ReplicationFactor factor; |
| private static HddsProtos.ReplicationType type; |
| private EventQueue eventQueue; |
| private int numContainerPerOwnerInPipeline; |
| private OzoneConfiguration conf; |
| |
| @Rule |
| public ExpectedException thrown = ExpectedException.none(); |
| |
| @Rule |
| public TemporaryFolder folder= new TemporaryFolder(); |
| private SCMMetadataStore scmMetadataStore; |
| |
| @Before |
| public void setUp() throws Exception { |
| conf = SCMTestUtils.getConf(); |
| numContainerPerOwnerInPipeline = conf.getInt( |
| ScmConfigKeys.OZONE_SCM_PIPELINE_OWNER_CONTAINER_COUNT, |
| ScmConfigKeys.OZONE_SCM_PIPELINE_OWNER_CONTAINER_COUNT_DEFAULT); |
| |
| |
| conf.set(HddsConfigKeys.OZONE_METADATA_DIRS, folder.newFolder().toString()); |
| conf.setBoolean(HddsConfigKeys.HDDS_SCM_SAFEMODE_PIPELINE_CREATION, false); |
| conf.setTimeDuration(HddsConfigKeys.HDDS_PIPELINE_REPORT_INTERVAL, 5, |
| TimeUnit.SECONDS); |
| |
| // Override the default Node Manager in SCM with this Mock Node Manager. |
| nodeManager = new MockNodeManager(true, 10); |
| eventQueue = new EventQueue(); |
| |
| scmMetadataStore = new SCMMetadataStoreImpl(conf); |
| scmMetadataStore.start(conf); |
| pipelineManager = |
| new SCMPipelineManager(conf, nodeManager, |
| scmMetadataStore.getPipelineTable(), |
| eventQueue); |
| pipelineManager.allowPipelineCreation(); |
| |
| PipelineProvider mockRatisProvider = |
| new MockRatisPipelineProvider(nodeManager, |
| pipelineManager.getStateManager(), conf, eventQueue); |
| pipelineManager.setPipelineProvider(HddsProtos.ReplicationType.RATIS, |
| mockRatisProvider); |
| SCMContainerManager containerManager = |
| new SCMContainerManager(conf, |
| scmMetadataStore.getContainerTable(), |
| scmMetadataStore.getStore(), |
| pipelineManager); |
| SCMSafeModeManager safeModeManager = new SCMSafeModeManager(conf, |
| containerManager.getContainers(), pipelineManager, eventQueue) { |
| @Override |
| public void emitSafeModeStatus() { |
| // skip |
| } |
| }; |
| SCMConfigurator configurator = new SCMConfigurator(); |
| configurator.setScmNodeManager(nodeManager); |
| configurator.setPipelineManager(pipelineManager); |
| configurator.setContainerManager(containerManager); |
| configurator.setScmSafeModeManager(safeModeManager); |
| configurator.setMetadataStore(scmMetadataStore); |
| scm = TestUtils.getScm(conf, configurator); |
| |
| // Initialize these fields so that the tests can pass. |
| mapping = (SCMContainerManager) scm.getContainerManager(); |
| blockManager = (BlockManagerImpl) scm.getScmBlockManager(); |
| DatanodeCommandHandler handler = new DatanodeCommandHandler(); |
| eventQueue.addHandler(SCMEvents.DATANODE_COMMAND, handler); |
| CloseContainerEventHandler closeContainerHandler = |
| new CloseContainerEventHandler(pipelineManager, mapping); |
| eventQueue.addHandler(SCMEvents.CLOSE_CONTAINER, closeContainerHandler); |
| factor = HddsProtos.ReplicationFactor.THREE; |
| type = HddsProtos.ReplicationType.RATIS; |
| |
| |
| blockManager.onMessage( |
| new SCMSafeModeManager.SafeModeStatus(false, false), null); |
| } |
| |
| @After |
| public void cleanup() throws Exception { |
| scm.stop(); |
| scm.join(); |
| eventQueue.close(); |
| scmMetadataStore.stop(); |
| } |
| |
| @Test |
| public void testAllocateBlock() throws Exception { |
| pipelineManager.createPipeline(type, factor); |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| AllocatedBlock block = blockManager.allocateBlock(DEFAULT_BLOCK_SIZE, |
| type, factor, OzoneConsts.OZONE, new ExcludeList()); |
| Assert.assertNotNull(block); |
| } |
| |
| @Test |
| public void testAllocateBlockWithExclusion() throws Exception { |
| try { |
| while (true) { |
| pipelineManager.createPipeline(type, factor); |
| } |
| } catch (IOException e) { |
| } |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| ExcludeList excludeList = new ExcludeList(); |
| excludeList |
| .addPipeline(pipelineManager.getPipelines(type, factor).get(0).getId()); |
| AllocatedBlock block = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| excludeList); |
| Assert.assertNotNull(block); |
| for (PipelineID id : excludeList.getPipelineIds()) { |
| Assert.assertNotEquals(block.getPipeline().getId(), id); |
| } |
| |
| for (Pipeline pipeline : pipelineManager.getPipelines(type, factor)) { |
| excludeList.addPipeline(pipeline.getId()); |
| } |
| block = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| excludeList); |
| Assert.assertNotNull(block); |
| Assert.assertTrue( |
| excludeList.getPipelineIds().contains(block.getPipeline().getId())); |
| } |
| |
| @Test |
| public void testAllocateBlockInParallel() throws Exception { |
| int threadCount = 20; |
| List<ExecutorService> executors = new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| executors.add(Executors.newSingleThreadExecutor()); |
| } |
| List<CompletableFuture<AllocatedBlock>> futureList = |
| new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| final CompletableFuture<AllocatedBlock> future = |
| new CompletableFuture<>(); |
| CompletableFuture.supplyAsync(() -> { |
| try { |
| future.complete(blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, |
| OzoneConsts.OZONE, |
| new ExcludeList())); |
| } catch (IOException e) { |
| future.completeExceptionally(e); |
| } |
| return future; |
| }, executors.get(i)); |
| futureList.add(future); |
| } |
| try { |
| CompletableFuture |
| .allOf(futureList.toArray(new CompletableFuture[futureList.size()])) |
| .get(); |
| } catch (Exception e) { |
| Assert.fail("testAllocateBlockInParallel failed"); |
| } |
| } |
| |
| @Test |
| public void testBlockDistribution() throws Exception { |
| int threadCount = numContainerPerOwnerInPipeline * |
| numContainerPerOwnerInPipeline; |
| nodeManager.setNumPipelinePerDatanode(1); |
| List<ExecutorService> executors = new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| executors.add(Executors.newSingleThreadExecutor()); |
| } |
| pipelineManager.createPipeline(type, factor); |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| Map<Long, List<AllocatedBlock>> allocatedBlockMap = |
| new ConcurrentHashMap<>(); |
| List<CompletableFuture<AllocatedBlock>> futureList = |
| new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| final CompletableFuture<AllocatedBlock> future = |
| new CompletableFuture<>(); |
| CompletableFuture.supplyAsync(() -> { |
| try { |
| List<AllocatedBlock> blockList; |
| AllocatedBlock block = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, |
| OzoneConsts.OZONE, |
| new ExcludeList()); |
| long containerId = block.getBlockID().getContainerID(); |
| if (!allocatedBlockMap.containsKey(containerId)) { |
| blockList = new ArrayList<>(); |
| } else { |
| blockList = allocatedBlockMap.get(containerId); |
| } |
| blockList.add(block); |
| allocatedBlockMap.put(containerId, blockList); |
| future.complete(block); |
| } catch (IOException e) { |
| future.completeExceptionally(e); |
| } |
| return future; |
| }, executors.get(i)); |
| futureList.add(future); |
| } |
| try { |
| CompletableFuture |
| .allOf(futureList.toArray( |
| new CompletableFuture[futureList.size()])).get(); |
| Assert.assertTrue(pipelineManager.getPipelines(type).size() == 1); |
| Assert.assertTrue( |
| allocatedBlockMap.size() == numContainerPerOwnerInPipeline); |
| Assert.assertTrue(allocatedBlockMap. |
| values().size() == numContainerPerOwnerInPipeline); |
| allocatedBlockMap.values().stream().forEach(v -> { |
| Assert.assertTrue(v.size() == numContainerPerOwnerInPipeline); |
| }); |
| } catch (Exception e) { |
| Assert.fail("testAllocateBlockInParallel failed"); |
| } |
| } |
| |
| |
| @Test |
| public void testBlockDistributionWithMultipleDisks() throws Exception { |
| int threadCount = numContainerPerOwnerInPipeline * |
| numContainerPerOwnerInPipeline; |
| nodeManager.setNumHealthyVolumes(numContainerPerOwnerInPipeline); |
| nodeManager.setNumPipelinePerDatanode(1); |
| List<ExecutorService> executors = new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| executors.add(Executors.newSingleThreadExecutor()); |
| } |
| pipelineManager.createPipeline(type, factor); |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| Map<Long, List<AllocatedBlock>> allocatedBlockMap = |
| new ConcurrentHashMap<>(); |
| List<CompletableFuture<AllocatedBlock>> futureList = |
| new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| final CompletableFuture<AllocatedBlock> future = |
| new CompletableFuture<>(); |
| CompletableFuture.supplyAsync(() -> { |
| try { |
| List<AllocatedBlock> blockList; |
| AllocatedBlock block = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, |
| OzoneConsts.OZONE, |
| new ExcludeList()); |
| long containerId = block.getBlockID().getContainerID(); |
| if (!allocatedBlockMap.containsKey(containerId)) { |
| blockList = new ArrayList<>(); |
| } else { |
| blockList = allocatedBlockMap.get(containerId); |
| } |
| blockList.add(block); |
| allocatedBlockMap.put(containerId, blockList); |
| future.complete(block); |
| } catch (IOException e) { |
| future.completeExceptionally(e); |
| } |
| return future; |
| }, executors.get(i)); |
| futureList.add(future); |
| } |
| try { |
| CompletableFuture |
| .allOf(futureList.toArray( |
| new CompletableFuture[futureList.size()])).get(); |
| Assert.assertTrue( |
| pipelineManager.getPipelines(type).size() == 1); |
| Pipeline pipeline = pipelineManager.getPipelines(type).get(0); |
| // total no of containers to be created will be number of healthy |
| // volumes * number of numContainerPerOwnerInPipeline which is equal to |
| // the thread count |
| Assert.assertTrue(threadCount == pipelineManager. |
| getNumberOfContainers(pipeline.getId())); |
| Assert.assertTrue( |
| allocatedBlockMap.size() == threadCount); |
| Assert.assertTrue(allocatedBlockMap. |
| values().size() == threadCount); |
| allocatedBlockMap.values().stream().forEach(v -> { |
| Assert.assertTrue(v.size() == 1); |
| }); |
| } catch (Exception e) { |
| Assert.fail("testAllocateBlockInParallel failed"); |
| } |
| } |
| |
| @Test |
| public void testBlockDistributionWithMultipleRaftLogDisks() throws Exception { |
| int threadCount = numContainerPerOwnerInPipeline * |
| numContainerPerOwnerInPipeline; |
| int numMetaDataVolumes = 2; |
| nodeManager.setNumHealthyVolumes(numContainerPerOwnerInPipeline); |
| nodeManager.setNumMetaDataVolumes(numMetaDataVolumes); |
| List<ExecutorService> executors = new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| executors.add(Executors.newSingleThreadExecutor()); |
| } |
| pipelineManager.createPipeline(type, factor); |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| Map<Long, List<AllocatedBlock>> allocatedBlockMap = |
| new ConcurrentHashMap<>(); |
| List<CompletableFuture<AllocatedBlock>> futureList = |
| new ArrayList<>(threadCount); |
| for (int i = 0; i < threadCount; i++) { |
| final CompletableFuture<AllocatedBlock> future = |
| new CompletableFuture<>(); |
| CompletableFuture.supplyAsync(() -> { |
| try { |
| List<AllocatedBlock> blockList; |
| AllocatedBlock block = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, |
| OzoneConsts.OZONE, |
| new ExcludeList()); |
| long containerId = block.getBlockID().getContainerID(); |
| if (!allocatedBlockMap.containsKey(containerId)) { |
| blockList = new ArrayList<>(); |
| } else { |
| blockList = allocatedBlockMap.get(containerId); |
| } |
| blockList.add(block); |
| allocatedBlockMap.put(containerId, blockList); |
| future.complete(block); |
| } catch (IOException e) { |
| future.completeExceptionally(e); |
| } |
| return future; |
| }, executors.get(i)); |
| futureList.add(future); |
| } |
| try { |
| CompletableFuture |
| .allOf(futureList.toArray( |
| new CompletableFuture[futureList.size()])).get(); |
| Assert.assertTrue( |
| pipelineManager.getPipelines(type).size() == 1); |
| Pipeline pipeline = pipelineManager.getPipelines(type).get(0); |
| // the pipeline per raft log disk config is set to 1 by default |
| int numContainers = (int)Math.ceil((double) |
| (numContainerPerOwnerInPipeline * |
| numContainerPerOwnerInPipeline)/numMetaDataVolumes); |
| Assert.assertTrue(numContainers == pipelineManager. |
| getNumberOfContainers(pipeline.getId())); |
| Assert.assertTrue( |
| allocatedBlockMap.size() == numContainers); |
| Assert.assertTrue(allocatedBlockMap. |
| values().size() == numContainers); |
| } catch (Exception e) { |
| Assert.fail("testAllocateBlockInParallel failed"); |
| } |
| } |
| |
| @Test |
| public void testAllocateOversizedBlock() throws Exception { |
| long size = 6 * GB; |
| thrown.expectMessage("Unsupported block size"); |
| AllocatedBlock block = blockManager.allocateBlock(size, |
| type, factor, OzoneConsts.OZONE, new ExcludeList()); |
| } |
| |
| |
| @Test |
| public void testAllocateBlockFailureInSafeMode() throws Exception { |
| blockManager.onMessage( |
| new SCMSafeModeManager.SafeModeStatus(true, true), null); |
| // Test1: In safe mode expect an SCMException. |
| thrown.expectMessage("SafeModePrecheck failed for " |
| + "allocateBlock"); |
| blockManager.allocateBlock(DEFAULT_BLOCK_SIZE, |
| type, factor, OzoneConsts.OZONE, new ExcludeList()); |
| } |
| |
| @Test |
| public void testAllocateBlockSucInSafeMode() throws Exception { |
| // Test2: Exit safe mode and then try allocateBock again. |
| Assert.assertNotNull(blockManager.allocateBlock(DEFAULT_BLOCK_SIZE, |
| type, factor, OzoneConsts.OZONE, new ExcludeList())); |
| } |
| |
| @Test(timeout = 10000) |
| public void testMultipleBlockAllocation() |
| throws IOException, TimeoutException, InterruptedException { |
| |
| pipelineManager.createPipeline(type, factor); |
| pipelineManager.createPipeline(type, factor); |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| |
| AllocatedBlock allocatedBlock = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| new ExcludeList()); |
| // block should be allocated in different pipelines |
| GenericTestUtils.waitFor(() -> { |
| try { |
| AllocatedBlock block = blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| new ExcludeList()); |
| return !block.getPipeline().getId() |
| .equals(allocatedBlock.getPipeline().getId()); |
| } catch (IOException e) { |
| } |
| return false; |
| }, 100, 1000); |
| } |
| |
| private boolean verifyNumberOfContainersInPipelines( |
| int numContainersPerPipeline) { |
| try { |
| for (Pipeline pipeline : pipelineManager.getPipelines(type, factor)) { |
| if (pipelineManager.getNumberOfContainers(pipeline.getId()) |
| != numContainersPerPipeline) { |
| return false; |
| } |
| } |
| } catch (IOException e) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Test(timeout = 10000) |
| public void testMultipleBlockAllocationWithClosedContainer() |
| throws IOException, TimeoutException, InterruptedException { |
| nodeManager.setNumPipelinePerDatanode(1); |
| nodeManager.setNumHealthyVolumes(1); |
| // create pipelines |
| for (int i = 0; |
| i < nodeManager.getNodes(NodeStatus.inServiceHealthy()).size() |
| / factor.getNumber(); i++) { |
| pipelineManager.createPipeline(type, factor); |
| } |
| TestUtils.openAllRatisPipelines(pipelineManager); |
| |
| // wait till each pipeline has the configured number of containers. |
| // After this each pipeline has numContainerPerOwnerInPipeline containers |
| // for each owner |
| GenericTestUtils.waitFor(() -> { |
| try { |
| blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| new ExcludeList()); |
| } catch (IOException e) { |
| } |
| return verifyNumberOfContainersInPipelines( |
| numContainerPerOwnerInPipeline); |
| }, 10, 1000); |
| |
| // close all the containers in all the pipelines |
| for (Pipeline pipeline : pipelineManager.getPipelines(type, factor)) { |
| for (ContainerID cid : pipelineManager |
| .getContainersInPipeline(pipeline.getId())) { |
| eventQueue.fireEvent(SCMEvents.CLOSE_CONTAINER, cid); |
| } |
| } |
| // wait till no containers are left in the pipelines |
| GenericTestUtils |
| .waitFor(() -> verifyNumberOfContainersInPipelines(0), 10, 5000); |
| |
| // allocate block so that each pipeline has the configured number of |
| // containers. |
| GenericTestUtils.waitFor(() -> { |
| try { |
| blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| new ExcludeList()); |
| } catch (IOException e) { |
| } |
| return verifyNumberOfContainersInPipelines( |
| numContainerPerOwnerInPipeline); |
| }, 10, 1000); |
| } |
| |
| @Test(timeout = 10000) |
| public void testBlockAllocationWithNoAvailablePipelines() |
| throws IOException, TimeoutException, InterruptedException { |
| for (Pipeline pipeline : pipelineManager.getPipelines()) { |
| pipelineManager.finalizeAndDestroyPipeline(pipeline, false); |
| } |
| Assert.assertEquals(0, pipelineManager.getPipelines(type, factor).size()); |
| Assert.assertNotNull(blockManager |
| .allocateBlock(DEFAULT_BLOCK_SIZE, type, factor, OzoneConsts.OZONE, |
| new ExcludeList())); |
| } |
| |
| private class DatanodeCommandHandler implements |
| EventHandler<CommandForDatanode> { |
| |
| @Override |
| public void onMessage(final CommandForDatanode command, |
| final EventPublisher publisher) { |
| final SCMCommandProto.Type commandType = command.getCommand().getType(); |
| if (commandType == SCMCommandProto.Type.createPipelineCommand) { |
| CreatePipelineCommand createCommand = |
| (CreatePipelineCommand) command.getCommand(); |
| try { |
| pipelineManager.openPipeline(createCommand.getPipelineID()); |
| } catch (IOException e) { |
| } |
| } |
| } |
| } |
| } |
