HDFS-9709. DiskBalancer : Add tests for disk balancer using a Mock Mover class. Contributed by Anu Engineer.
This commit is contained in:
Anu Engineer
Arpit Agarwal
parent
9be9703716
commit
6c606bf5c8
@ -40,7 +40,11 @@
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import java.nio.charset.Charset;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.*;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.Future;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.locks.ReentrantLock;
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/**
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@ -106,6 +110,7 @@ public void shutdown() {
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this.isDiskBalancerEnabled = false;
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this.currentResult = Result.NO_PLAN;
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if ((this.future != null) && (!this.future.isDone())) {
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this.currentResult = Result.PLAN_CANCELLED;
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this.blockMover.setExitFlag();
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shutdownExecutor();
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}
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@ -120,9 +125,9 @@ public void shutdown() {
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private void shutdownExecutor() {
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scheduler.shutdown();
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try {
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if(!scheduler.awaitTermination(30, TimeUnit.SECONDS)) {
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if(!scheduler.awaitTermination(10, TimeUnit.SECONDS)) {
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scheduler.shutdownNow();
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if (!scheduler.awaitTermination(30, TimeUnit.SECONDS)) {
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if (!scheduler.awaitTermination(10, TimeUnit.SECONDS)) {
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LOG.error("Disk Balancer : Scheduler did not terminate.");
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}
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}
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@ -218,6 +223,7 @@ public void cancelPlan(String planID) throws DiskBalancerException {
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if (!this.future.isDone()) {
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this.blockMover.setExitFlag();
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shutdownExecutor();
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this.currentResult = Result.PLAN_CANCELLED;
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}
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} finally {
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lock.unlock();
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@ -537,7 +543,7 @@ public interface BlockMover {
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/**
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* Holds references to actual volumes that we will be operating against.
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*/
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static class VolumePair {
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public static class VolumePair {
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private final FsVolumeSpi source;
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private final FsVolumeSpi dest;
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@ -0,0 +1,42 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with this
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* work for additional information regarding copyright ownership. The ASF
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* licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package org.apache.hadoop.hdfs.server.diskbalancer;
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import org.hamcrest.Description;
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import org.hamcrest.TypeSafeMatcher;
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public class DiskBalancerResultVerifier
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extends TypeSafeMatcher<DiskBalancerException> {
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private final DiskBalancerException.Result expectedResult;
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DiskBalancerResultVerifier(DiskBalancerException.Result expectedResult) {
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this.expectedResult = expectedResult;
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}
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@Override
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protected boolean matchesSafely(DiskBalancerException exception) {
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return (this.expectedResult == exception.getResult());
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}
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@Override
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public void describeTo(Description description) {
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description.appendText("expects Result: ")
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.appendValue(this.expectedResult);
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}
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}
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@ -90,8 +90,7 @@ public void testSubmitPlanWithInvalidHash() throws Exception {
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int planVersion = rpcTestHelper.getPlanVersion();
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NodePlan plan = rpcTestHelper.getPlan();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new
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ResultVerifier(Result.INVALID_PLAN_HASH));
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thrown.expect(new DiskBalancerResultVerifier(Result.INVALID_PLAN_HASH));
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dataNode.submitDiskBalancerPlan(planHash, planVersion, 10, plan.toJson());
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}
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@ -104,8 +103,7 @@ public void testSubmitPlanWithInvalidVersion() throws Exception {
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planVersion++;
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NodePlan plan = rpcTestHelper.getPlan();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new
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ResultVerifier(Result.INVALID_PLAN_VERSION));
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thrown.expect(new DiskBalancerResultVerifier(Result.INVALID_PLAN_VERSION));
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dataNode.submitDiskBalancerPlan(planHash, planVersion, 10, plan.toJson());
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}
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@ -117,8 +115,7 @@ public void testSubmitPlanWithInvalidPlan() throws Exception {
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int planVersion = rpcTestHelper.getPlanVersion();
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NodePlan plan = rpcTestHelper.getPlan();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new
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ResultVerifier(Result.INVALID_PLAN));
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thrown.expect(new DiskBalancerResultVerifier(Result.INVALID_PLAN));
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dataNode.submitDiskBalancerPlan(planHash, planVersion, 10, "");
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}
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@ -143,8 +140,7 @@ public void testCancelNonExistentPlan() throws Exception {
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planHash = String.valueOf(hashArray);
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NodePlan plan = rpcTestHelper.getPlan();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new
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ResultVerifier(Result.NO_SUCH_PLAN));
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thrown.expect(new DiskBalancerResultVerifier(Result.NO_SUCH_PLAN));
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dataNode.cancelDiskBalancePlan(planHash);
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}
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@ -155,8 +151,7 @@ public void testCancelEmptyPlan() throws Exception {
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String planHash = "";
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NodePlan plan = rpcTestHelper.getPlan();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new
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ResultVerifier(Result.NO_SUCH_PLAN));
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thrown.expect(new DiskBalancerResultVerifier(Result.NO_SUCH_PLAN));
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dataNode.cancelDiskBalancePlan(planHash);
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}
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@ -182,8 +177,7 @@ public void testGetDiskBalancerInvalidSetting() throws Exception {
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final String invalidSetting = "invalidSetting";
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DataNode dataNode = cluster.getDataNodes().get(dnIndex);
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new
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ResultVerifier(Result.UNKNOWN_KEY));
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thrown.expect(new DiskBalancerResultVerifier(Result.UNKNOWN_KEY));
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dataNode.getDiskBalancerSetting(invalidSetting);
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}
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@ -274,25 +268,4 @@ public RpcTestHelper invoke() throws Exception {
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return this;
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}
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}
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private class ResultVerifier
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extends TypeSafeMatcher<DiskBalancerException> {
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private final DiskBalancerException.Result expectedResult;
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ResultVerifier(DiskBalancerException.Result expectedResult){
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this.expectedResult = expectedResult;
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}
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@Override
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protected boolean matchesSafely(DiskBalancerException exception) {
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return (this.expectedResult == exception.getResult());
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}
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@Override
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public void describeTo(Description description) {
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description.appendText("expects Result: ")
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.appendValue(this.expectedResult);
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}
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}
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}
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@ -0,0 +1,570 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package org.apache.hadoop.hdfs.server.diskbalancer;
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import com.google.common.base.Preconditions;
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import org.apache.commons.codec.digest.DigestUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.hdfs.DFSConfigKeys;
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import org.apache.hadoop.hdfs.HdfsConfiguration;
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import org.apache.hadoop.hdfs.MiniDFSCluster;
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import org.apache.hadoop.hdfs.server.datanode.DataNode;
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import org.apache.hadoop.hdfs.server.datanode.DiskBalancer;
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import org.apache.hadoop.hdfs.server.datanode.DiskBalancerWorkItem;
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import org.apache.hadoop.hdfs.server.datanode.DiskBalancerWorkStatus;
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import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsDatasetSpi;
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import org.apache.hadoop.hdfs.server.diskbalancer.connectors.ClusterConnector;
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import org.apache.hadoop.hdfs.server.diskbalancer.connectors.ConnectorFactory;
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import org.apache.hadoop.hdfs.server.diskbalancer.datamodel.DiskBalancerCluster;
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import org.apache.hadoop.hdfs.server.diskbalancer.datamodel.DiskBalancerDataNode;
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import org.apache.hadoop.hdfs.server.diskbalancer.planner.GreedyPlanner;
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import org.apache.hadoop.hdfs.server.diskbalancer.planner.MoveStep;
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import org.apache.hadoop.hdfs.server.diskbalancer.planner.NodePlan;
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import org.apache.hadoop.hdfs.server.diskbalancer.planner.Step;
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import org.apache.hadoop.util.Time;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.ExpectedException;
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import java.io.IOException;
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import java.net.URI;
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import java.util.Iterator;
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import java.util.concurrent.atomic.AtomicBoolean;
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import static org.apache.hadoop.hdfs.server.datanode.DiskBalancerWorkStatus.Result.NO_PLAN;
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import static org.apache.hadoop.hdfs.server.datanode.DiskBalancerWorkStatus.Result.PLAN_DONE;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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public class TestDiskBalancerWithMockMover {
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static final Log LOG = LogFactory.getLog(TestDiskBalancerWithMockMover.class);
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@Rule
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public ExpectedException thrown = ExpectedException.none();
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MiniDFSCluster cluster;
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String sourceName;
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String destName;
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String sourceUUID;
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String destUUID;
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String nodeID;
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DataNode dataNode;
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/**
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* Checks that we return the right error if diskbalancer is not enabled.
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*/
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@Test
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public void testDiskBalancerDisabled() throws Exception {
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Configuration conf = new HdfsConfiguration();
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conf.setBoolean(DFSConfigKeys.DFS_DISK_BALANCER_ENABLED, false);
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restartDataNode();
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TestMover blockMover = new TestMover(cluster.getDataNodes()
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.get(0).getFSDataset());
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DiskBalancer balancer = new DiskBalancerBuilder(conf)
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.setMover(blockMover)
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.build();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.DISK_BALANCER_NOT_ENABLED));
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balancer.queryWorkStatus();
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}
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/**
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* Checks that Enable flag works correctly.
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*
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* @throws DiskBalancerException
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*/
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@Test
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public void testDiskBalancerEnabled() throws DiskBalancerException {
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Configuration conf = new HdfsConfiguration();
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conf.setBoolean(DFSConfigKeys.DFS_DISK_BALANCER_ENABLED, true);
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TestMover blockMover = new TestMover(cluster.getDataNodes()
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.get(0).getFSDataset());
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DiskBalancer balancer = new DiskBalancerBuilder(conf)
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.setMover(blockMover)
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.build();
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DiskBalancerWorkStatus status = balancer.queryWorkStatus();
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assertEquals(NO_PLAN, status.getResult());
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}
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private void executeSubmitPlan(NodePlan plan, DiskBalancer balancer,
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int version) throws IOException {
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String planJson = plan.toJson();
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String planID = DigestUtils.sha512Hex(planJson);
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balancer.submitPlan(planID, version, planJson, 10, false);
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}
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private void executeSubmitPlan(NodePlan plan, DiskBalancer balancer)
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throws IOException {
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executeSubmitPlan(plan, balancer, 1);
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}
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/**
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* Test a second submit plan fails.
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*
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* @throws Exception
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*/
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@Test
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public void testResubmitDiskBalancerPlan() throws Exception {
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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// ask block mover to get stuck in copy block
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mockMoverHelper.getBlockMover().setSleep();
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executeSubmitPlan(plan, balancer);
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.PLAN_ALREADY_IN_PROGRESS));
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executeSubmitPlan(plan, balancer);
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// Not needed but this is the cleanup step.
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mockMoverHelper.getBlockMover().clearSleep();
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}
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@Test
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public void testSubmitDiskBalancerPlan() throws Exception {
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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executeSubmitPlan(plan, balancer);
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int counter = 0;
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while ((balancer.queryWorkStatus().getResult() != PLAN_DONE) &&
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(counter < 3)) {
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Thread.sleep(1000);
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counter++;
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}
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// Asserts that submit plan caused an execution in the background.
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assertTrue(mockMoverHelper.getBlockMover().getRunCount() == 1);
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}
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@Test
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public void testSubmitWithOlderPlan() throws Exception {
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final long MILLISECOND_IN_AN_HOUR = 1000 * 60 * 60L;
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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plan.setTimeStamp(Time.now() - (32 * MILLISECOND_IN_AN_HOUR));
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.OLD_PLAN_SUBMITTED));
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executeSubmitPlan(plan, balancer);
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}
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@Test
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public void testSubmitWithOldInvalidVersion() throws Exception {
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.INVALID_PLAN_VERSION));
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// Plan version is invalid -- there is no version 0.
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executeSubmitPlan(plan, balancer, 0);
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}
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@Test
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public void testSubmitWithNullPlan() throws Exception {
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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String planJson = plan.toJson();
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String planID = DigestUtils.sha512Hex(planJson);
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.INVALID_PLAN));
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balancer.submitPlan(planID, 1, null, 10, false);
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}
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@Test
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public void testSubmitWithInvalidHash() throws Exception {
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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String planJson = plan.toJson();
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String planID = DigestUtils.sha512Hex(planJson);
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char repChar = planID.charAt(0);
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repChar++;
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.INVALID_PLAN_HASH));
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balancer.submitPlan(planID.replace(planID.charAt(0), repChar),
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1, planJson, 10, false);
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}
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/**
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* Test Cancel Plan.
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*
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* @throws Exception
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*/
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@Test
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public void testCancelDiskBalancerPlan() throws Exception {
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MockMoverHelper mockMoverHelper = new MockMoverHelper().invoke();
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NodePlan plan = mockMoverHelper.getPlan();
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DiskBalancer balancer = mockMoverHelper.getBalancer();
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// ask block mover to delay execution
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mockMoverHelper.getBlockMover().setSleep();
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executeSubmitPlan(plan, balancer);
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String planJson = plan.toJson();
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String planID = DigestUtils.sha512Hex(planJson);
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balancer.cancelPlan(planID);
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DiskBalancerWorkStatus status = balancer.queryWorkStatus();
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assertEquals(DiskBalancerWorkStatus.Result.PLAN_CANCELLED,
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status.getResult());
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executeSubmitPlan(plan, balancer);
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// Send a Wrong cancellation request.
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char first = planID.charAt(0);
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first++;
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thrown.expect(DiskBalancerException.class);
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thrown.expect(new DiskBalancerResultVerifier(DiskBalancerException
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.Result.NO_SUCH_PLAN));
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balancer.cancelPlan(planID.replace(planID.charAt(0), first));
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// Now cancel the real one
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balancer.cancelPlan(planID);
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mockMoverHelper.getBlockMover().clearSleep(); // unblock mover.
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status = balancer.queryWorkStatus();
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assertEquals(DiskBalancerWorkStatus.Result.PLAN_CANCELLED,
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status.getResult());
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}
|
||||
|
||||
@Before
|
||||
public void setUp() throws Exception {
|
||||
Configuration conf = new HdfsConfiguration();
|
||||
final int NUM_STORAGES_PER_DN = 2;
|
||||
cluster = new MiniDFSCluster
|
||||
.Builder(conf).numDataNodes(3)
|
||||
.storagesPerDatanode(NUM_STORAGES_PER_DN)
|
||||
.build();
|
||||
cluster.waitActive();
|
||||
dataNode = cluster.getDataNodes().get(0);
|
||||
FsDatasetSpi.FsVolumeReferences references = dataNode.getFSDataset()
|
||||
.getFsVolumeReferences();
|
||||
|
||||
nodeID = dataNode.getDatanodeUuid();
|
||||
sourceName = references.get(0).getBasePath();
|
||||
destName = references.get(1).getBasePath();
|
||||
sourceUUID = references.get(0).getStorageID();
|
||||
destUUID = references.get(1).getStorageID();
|
||||
references.close();
|
||||
}
|
||||
|
||||
@After
|
||||
public void tearDown() throws Exception {
|
||||
if (cluster != null) {
|
||||
cluster.shutdown();
|
||||
}
|
||||
}
|
||||
|
||||
private void restartDataNode() throws IOException {
|
||||
if (cluster != null) {
|
||||
cluster.restartDataNode(0);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Allows us to control mover class for test purposes.
|
||||
*/
|
||||
public static class TestMover implements DiskBalancer.BlockMover {
|
||||
|
||||
private AtomicBoolean shouldRun;
|
||||
private FsDatasetSpi dataset;
|
||||
private Integer runCount;
|
||||
private volatile boolean sleepInCopyBlocks;
|
||||
private long delay;
|
||||
|
||||
public TestMover(FsDatasetSpi dataset) {
|
||||
this.dataset = dataset;
|
||||
this.shouldRun = new AtomicBoolean(false);
|
||||
this.runCount = new Integer(0);
|
||||
}
|
||||
|
||||
public void setSleep() {
|
||||
sleepInCopyBlocks = true;
|
||||
}
|
||||
|
||||
public void clearSleep() {
|
||||
sleepInCopyBlocks = false;
|
||||
}
|
||||
|
||||
public void setDelay(long milliseconds) {
|
||||
this.delay = milliseconds;
|
||||
}
|
||||
|
||||
/**
|
||||
* Copies blocks from a set of volumes.
|
||||
*
|
||||
* @param pair - Source and Destination Volumes.
|
||||
* @param item - Number of bytes to move from volumes.
|
||||
*/
|
||||
@Override
|
||||
public void copyBlocks(DiskBalancer.VolumePair pair,
|
||||
DiskBalancerWorkItem item) {
|
||||
|
||||
try {
|
||||
// get stuck if we are asked to sleep.
|
||||
while (sleepInCopyBlocks) {
|
||||
if (!this.shouldRun()) {
|
||||
return;
|
||||
}
|
||||
Thread.sleep(10);
|
||||
}
|
||||
if (delay > 0) {
|
||||
Thread.sleep(delay);
|
||||
}
|
||||
synchronized (runCount) {
|
||||
if (shouldRun()) {
|
||||
runCount++;
|
||||
}
|
||||
}
|
||||
} catch (InterruptedException ex) {
|
||||
// A failure here can be safely ignored with no impact for tests.
|
||||
LOG.error(ex.toString());
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets copyblocks into runnable state.
|
||||
*/
|
||||
@Override
|
||||
public void setRunnable() {
|
||||
this.shouldRun.set(true);
|
||||
}
|
||||
|
||||
/**
|
||||
* Signals copy block to exit.
|
||||
*/
|
||||
@Override
|
||||
public void setExitFlag() {
|
||||
this.shouldRun.set(false);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the shouldRun boolean flag.
|
||||
*/
|
||||
public boolean shouldRun() {
|
||||
return this.shouldRun.get();
|
||||
}
|
||||
|
||||
@Override
|
||||
public FsDatasetSpi getDataset() {
|
||||
return this.dataset;
|
||||
}
|
||||
|
||||
public int getRunCount() {
|
||||
synchronized (runCount) {
|
||||
LOG.info("Run count : " + runCount.intValue());
|
||||
return runCount.intValue();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private class MockMoverHelper {
|
||||
private DiskBalancer balancer;
|
||||
private NodePlan plan;
|
||||
private TestMover blockMover;
|
||||
|
||||
public DiskBalancer getBalancer() {
|
||||
return balancer;
|
||||
}
|
||||
|
||||
public NodePlan getPlan() {
|
||||
return plan;
|
||||
}
|
||||
|
||||
public TestMover getBlockMover() {
|
||||
return blockMover;
|
||||
}
|
||||
|
||||
public MockMoverHelper invoke() throws Exception {
|
||||
Configuration conf = new HdfsConfiguration();
|
||||
conf.setBoolean(DFSConfigKeys.DFS_DISK_BALANCER_ENABLED, true);
|
||||
restartDataNode();
|
||||
|
||||
blockMover = new TestMover(dataNode.getFSDataset());
|
||||
blockMover.setRunnable();
|
||||
|
||||
balancer = new DiskBalancerBuilder(conf)
|
||||
.setMover(blockMover)
|
||||
.setNodeID(nodeID)
|
||||
.build();
|
||||
|
||||
DiskBalancerCluster diskBalancerCluster = new DiskBalancerClusterBuilder()
|
||||
.setClusterSource("/diskBalancer/data-cluster-3node-3disk.json")
|
||||
.build();
|
||||
|
||||
plan = new PlanBuilder(diskBalancerCluster, nodeID)
|
||||
.setPathMap(sourceName, destName)
|
||||
.setUUIDMap(sourceUUID, destUUID)
|
||||
.build();
|
||||
return this;
|
||||
}
|
||||
}
|
||||
|
||||
private class DiskBalancerBuilder {
|
||||
private TestMover blockMover;
|
||||
private Configuration conf;
|
||||
private String nodeID;
|
||||
|
||||
public DiskBalancerBuilder(Configuration conf) {
|
||||
this.conf = conf;
|
||||
}
|
||||
|
||||
public DiskBalancerBuilder setNodeID(String nodeID) {
|
||||
this.nodeID = nodeID;
|
||||
return this;
|
||||
}
|
||||
|
||||
public DiskBalancerBuilder setConf(Configuration conf) {
|
||||
this.conf = conf;
|
||||
return this;
|
||||
}
|
||||
|
||||
public DiskBalancerBuilder setMover(TestMover mover) {
|
||||
this.blockMover = mover;
|
||||
return this;
|
||||
}
|
||||
|
||||
public DiskBalancerBuilder setRunnable() {
|
||||
blockMover.setRunnable();
|
||||
return this;
|
||||
}
|
||||
|
||||
public DiskBalancer build() {
|
||||
Preconditions.checkNotNull(blockMover);
|
||||
return new DiskBalancer(nodeID, conf,
|
||||
blockMover);
|
||||
}
|
||||
}
|
||||
|
||||
private class DiskBalancerClusterBuilder {
|
||||
private String jsonFilePath;
|
||||
private Configuration conf;
|
||||
|
||||
public DiskBalancerClusterBuilder setConf(Configuration conf) {
|
||||
this.conf = conf;
|
||||
return this;
|
||||
}
|
||||
|
||||
public DiskBalancerClusterBuilder setClusterSource(String jsonFilePath)
|
||||
throws Exception {
|
||||
this.jsonFilePath = jsonFilePath;
|
||||
return this;
|
||||
}
|
||||
|
||||
public DiskBalancerCluster build() throws Exception {
|
||||
DiskBalancerCluster diskBalancerCluster;
|
||||
URI clusterJson = getClass().getResource(jsonFilePath).toURI();
|
||||
ClusterConnector jsonConnector =
|
||||
ConnectorFactory.getCluster(clusterJson, conf);
|
||||
diskBalancerCluster = new DiskBalancerCluster(jsonConnector);
|
||||
diskBalancerCluster.readClusterInfo();
|
||||
diskBalancerCluster.setNodesToProcess(diskBalancerCluster.getNodes());
|
||||
return diskBalancerCluster;
|
||||
}
|
||||
}
|
||||
|
||||
private class PlanBuilder {
|
||||
private String sourcePath;
|
||||
private String destPath;
|
||||
private String sourceUUID;
|
||||
private String destUUID;
|
||||
private DiskBalancerCluster balancerCluster;
|
||||
private String nodeID;
|
||||
|
||||
public PlanBuilder(DiskBalancerCluster balancerCluster, String nodeID) {
|
||||
this.balancerCluster = balancerCluster;
|
||||
this.nodeID = nodeID;
|
||||
}
|
||||
|
||||
public PlanBuilder setPathMap(String sourcePath, String destPath) {
|
||||
this.sourcePath = sourcePath;
|
||||
this.destPath = destPath;
|
||||
return this;
|
||||
}
|
||||
|
||||
public PlanBuilder setUUIDMap(String sourceUUID, String destUUID) {
|
||||
this.sourceUUID = sourceUUID;
|
||||
this.destUUID = destUUID;
|
||||
return this;
|
||||
}
|
||||
|
||||
public NodePlan build() throws Exception {
|
||||
final int dnIndex = 0;
|
||||
Preconditions.checkNotNull(balancerCluster);
|
||||
Preconditions.checkState(nodeID.length() > 0);
|
||||
|
||||
DiskBalancerDataNode node = balancerCluster.getNodes().get(dnIndex);
|
||||
node.setDataNodeUUID(nodeID);
|
||||
GreedyPlanner planner = new GreedyPlanner(10.0f, node);
|
||||
NodePlan plan = new NodePlan(node.getDataNodeName(), node.getDataNodePort
|
||||
());
|
||||
planner.balanceVolumeSet(node, node.getVolumeSets().get("DISK"), plan);
|
||||
setVolumeNames(plan);
|
||||
return plan;
|
||||
}
|
||||
|
||||
private void setVolumeNames(NodePlan plan) {
|
||||
Iterator<Step> iter = plan.getVolumeSetPlans().iterator();
|
||||
while (iter.hasNext()) {
|
||||
MoveStep nextStep = (MoveStep) iter.next();
|
||||
nextStep.getSourceVolume().setPath(sourcePath);
|
||||
nextStep.getSourceVolume().setUuid(sourceUUID);
|
||||
nextStep.getDestinationVolume().setPath(destPath);
|
||||
nextStep.getDestinationVolume().setUuid(destUUID);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user