From 741b4b4674be0c500bc7a474739d6481834c5e4a Mon Sep 17 00:00:00 2001 From: Duo Zhang Date: Tue, 18 May 2021 08:08:03 +0800 Subject: [PATCH] HBASE-25032 Do not assign regions to region server which has not called regionServerReport yet (#3268) Signed-off-by: Bharath Vissapragada Signed-off-by: Michael Stack --- .../hadoop/hbase/ServerMetricsBuilder.java | 2 +- .../hadoop/hbase/master/ServerManager.java | 19 +- .../rsgroup/RSGroupBasedLoadBalancer.java | 4 +- .../hbase/master/TestMasterMetrics.java | 37 ++++ .../master/assignment/MockMasterServices.java | 6 +- ...signRegionToUninitializedRegionServer.java | 163 ++++++++++++++++++ .../assignment/TestAssignmentManagerBase.java | 3 +- ...tRefreshPeerWhileRegionServerRestarts.java | 115 ++++++++++++ .../hbase/rsgroup/TestRSGroupsKillRS.java | 9 +- 9 files changed, 346 insertions(+), 12 deletions(-) create mode 100644 hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignRegionToUninitializedRegionServer.java create mode 100644 hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRefreshPeerWhileRegionServerRestarts.java diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerMetricsBuilder.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerMetricsBuilder.java index 5975d392ac7..3c84097b0af 100644 --- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerMetricsBuilder.java +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/ServerMetricsBuilder.java @@ -320,7 +320,7 @@ public final class ServerMetricsBuilder { Map> sourcesMap = new HashMap<>(); for(ReplicationLoadSource loadSource : sources){ sourcesMap.computeIfAbsent(loadSource.getPeerID(), - peerId -> new ArrayList()).add(loadSource); + peerId -> new ArrayList<>()).add(loadSource); } return sourcesMap; } diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java index 7304235ed31..47a34ccd16e 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java @@ -24,6 +24,7 @@ import java.io.IOException; import java.net.InetAddress; import java.util.ArrayList; import java.util.Collections; +import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Map; @@ -959,11 +960,19 @@ public class ServerManager { /** * Creates a list of possible destinations for a region. It contains the online servers, but not - * the draining or dying servers. - * @param serversToExclude can be null if there is no server to exclude + * the draining or dying servers. + * @param serversToExclude can be null if there is no server to exclude */ - public List createDestinationServersList(final List serversToExclude){ - final List destServers = getOnlineServersList(); + public List createDestinationServersList(final List serversToExclude) { + Set destServers = new HashSet<>(); + onlineServers.forEach((sn, sm) -> { + if (sm.getLastReportTimestamp() > 0) { + // This means we have already called regionServerReport at leaset once, then let's include + // this server for region assignment. This is an optimization to avoid assigning regions to + // an uninitialized server. See HBASE-25032 for more details. + destServers.add(sn); + } + }); if (serversToExclude != null) { destServers.removeAll(serversToExclude); @@ -973,7 +982,7 @@ public class ServerManager { final List drainingServersCopy = getDrainingServersList(); destServers.removeAll(drainingServersCopy); - return destServers; + return new ArrayList<>(destServers); } /** diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java index c602705c0f4..183a4774e8b 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java @@ -76,7 +76,7 @@ public class RSGroupBasedLoadBalancer implements LoadBalancer { private MasterServices masterServices; private FavoredNodesManager favoredNodesManager; private volatile RSGroupInfoManager rsGroupInfoManager; - private LoadBalancer internalBalancer; + private volatile LoadBalancer internalBalancer; /** * Set this key to {@code true} to allow region fallback. @@ -87,7 +87,7 @@ public class RSGroupBasedLoadBalancer implements LoadBalancer { */ public static final String FALLBACK_GROUP_ENABLE_KEY = "hbase.rsgroup.fallback.enable"; - private boolean fallbackEnabled = false; + private volatile boolean fallbackEnabled = false; /** * Used by reflection in {@link org.apache.hadoop.hbase.master.balancer.LoadBalancerFactory}. diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterMetrics.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterMetrics.java index 5dc2161e434..890399c54ca 100644 --- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterMetrics.java +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterMetrics.java @@ -18,13 +18,18 @@ package org.apache.hadoop.hbase.master; import java.io.IOException; +import java.io.UncheckedIOException; +import java.util.HashMap; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.CompatibilityFactory; import org.apache.hadoop.hbase.HBaseClassTestRule; import org.apache.hadoop.hbase.HBaseTestingUtility; import org.apache.hadoop.hbase.MiniHBaseCluster; +import org.apache.hadoop.hbase.ServerMetricsBuilder; import org.apache.hadoop.hbase.ServerName; import org.apache.hadoop.hbase.StartMiniClusterOption; +import org.apache.hadoop.hbase.YouAreDeadException; +import org.apache.hadoop.hbase.regionserver.RSRpcServices; import org.apache.hadoop.hbase.test.MetricsAssertHelper; import org.apache.hadoop.hbase.testclassification.MasterTests; import org.apache.hadoop.hbase.testclassification.MediumTests; @@ -37,9 +42,14 @@ import org.junit.experimental.categories.Category; import org.slf4j.Logger; import org.slf4j.LoggerFactory; +import org.apache.hbase.thirdparty.com.google.protobuf.RpcController; +import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException; + import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil; import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos; import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos; +import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStartupRequest; +import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse; @Category({ MasterTests.class, MediumTests.class }) public class TestMasterMetrics { @@ -66,6 +76,33 @@ public class TestMasterMetrics { protected void tryRegionServerReport(long reportStartTime, long reportEndTime) { // do nothing } + + @Override + protected RSRpcServices createRpcServices() throws IOException { + return new MasterRpcServices(this) { + + @Override + public RegionServerStartupResponse regionServerStartup(RpcController controller, + RegionServerStartupRequest request) throws ServiceException { + RegionServerStartupResponse resp = super.regionServerStartup(controller, request); + ServerManager serverManager = getServerManager(); + // to let the region server actual online otherwise we can not assign meta region + new HashMap<>(serverManager.getOnlineServers()).forEach((sn, sm) -> { + if (sm.getLastReportTimestamp() <= 0) { + try { + serverManager.regionServerReport(sn, + ServerMetricsBuilder.newBuilder(sn).setVersionNumber(sm.getVersionNumber()) + .setVersion(sm.getVersion()).setLastReportTimestamp(System.currentTimeMillis()) + .build()); + } catch (YouAreDeadException e) { + throw new UncheckedIOException(e); + } + } + }); + return resp; + } + }; + } } public static class MyRegionServer extends MiniHBaseCluster.MiniHBaseClusterRegionServer { diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/MockMasterServices.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/MockMasterServices.java index e899cee3ea4..acd76ee40f8 100644 --- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/MockMasterServices.java +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/MockMasterServices.java @@ -148,7 +148,8 @@ public class MockMasterServices extends MockNoopMasterServices { this.assignmentManager.start(); for (int i = 0; i < numServes; ++i) { ServerName sn = ServerName.valueOf("localhost", 100 + i, 1); - serverManager.regionServerReport(sn, ServerMetricsBuilder.of(sn)); + serverManager.regionServerReport(sn, ServerMetricsBuilder.newBuilder(sn) + .setLastReportTimestamp(System.currentTimeMillis()).build()); } this.procedureExecutor.getEnvironment().setEventReady(initialized, true); } @@ -174,7 +175,8 @@ public class MockMasterServices extends MockNoopMasterServices { return; } ServerName sn = ServerName.valueOf(serverName.getAddress().toString(), startCode); - serverManager.regionServerReport(sn, ServerMetricsBuilder.of(sn)); + serverManager.regionServerReport(sn, ServerMetricsBuilder.newBuilder(sn) + .setLastReportTimestamp(System.currentTimeMillis()).build()); } @Override diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignRegionToUninitializedRegionServer.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignRegionToUninitializedRegionServer.java new file mode 100644 index 00000000000..289016f7a33 --- /dev/null +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignRegionToUninitializedRegionServer.java @@ -0,0 +1,163 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.hadoop.hbase.master.assignment; + +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertSame; +import static org.junit.Assert.assertTrue; + +import java.io.IOException; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.ForkJoinPool; +import java.util.concurrent.Future; +import java.util.concurrent.atomic.AtomicBoolean; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.HBaseClassTestRule; +import org.apache.hadoop.hbase.HBaseTestingUtility; +import org.apache.hadoop.hbase.HConstants; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.regionserver.HRegionServer; +import org.apache.hadoop.hbase.regionserver.RSRpcServices; +import org.apache.hadoop.hbase.testclassification.MasterTests; +import org.apache.hadoop.hbase.testclassification.MediumTests; +import org.apache.hadoop.hbase.util.Bytes; +import org.junit.AfterClass; +import org.junit.BeforeClass; +import org.junit.ClassRule; +import org.junit.Test; +import org.junit.experimental.categories.Category; + +import org.apache.hbase.thirdparty.com.google.protobuf.RpcController; +import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException; + +import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ExecuteProceduresRequest; +import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.ExecuteProceduresResponse; + +/** + * UT for HBASE-25032. + */ +@Category({ MasterTests.class, MediumTests.class }) +public class TestAssignRegionToUninitializedRegionServer { + + @ClassRule + public static final HBaseClassTestRule CLASS_RULE = + HBaseClassTestRule.forClass(TestAssignRegionToUninitializedRegionServer.class); + + private static CountDownLatch ARRIVE; + + private static CountDownLatch RESUME; + + private static AtomicBoolean ASSIGN_CALLED = new AtomicBoolean(false); + + public static final class RSRpcServicesForTest extends RSRpcServices { + + public RSRpcServicesForTest(HRegionServer rs) throws IOException { + super(rs); + } + + @Override + public ExecuteProceduresResponse executeProcedures(RpcController controller, + ExecuteProceduresRequest request) throws ServiceException { + if (request.getOpenRegionCount() > 0) { + ASSIGN_CALLED.set(true); + } + return super.executeProcedures(controller, request); + } + } + + public static final class RegionServerForTest extends HRegionServer { + + public RegionServerForTest(Configuration conf) throws IOException { + super(conf); + } + + @Override + protected void tryRegionServerReport(long reportStartTime, long reportEndTime) + throws IOException { + if (ARRIVE != null) { + ARRIVE.countDown(); + ARRIVE = null; + try { + RESUME.await(); + } catch (InterruptedException e) { + } + } + super.tryRegionServerReport(reportStartTime, reportEndTime); + } + + @Override + protected RSRpcServices createRpcServices() throws IOException { + return new RSRpcServicesForTest(this); + } + } + + private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); + + private static TableName NAME = TableName.valueOf("test"); + + private static byte[] FAMILY = Bytes.toBytes("family"); + + @BeforeClass + public static void setUp() throws Exception { + UTIL.startMiniCluster(1); + UTIL.createTable(NAME, FAMILY); + UTIL.waitTableAvailable(NAME); + } + + @AfterClass + public static void tearDown() throws IOException { + UTIL.shutdownMiniCluster(); + } + + @Test + public void testMove() throws Exception { + UTIL.getMiniHBaseCluster().getConfiguration().setClass(HConstants.REGION_SERVER_IMPL, + RegionServerForTest.class, HRegionServer.class); + CountDownLatch arrive = new CountDownLatch(1); + ARRIVE = arrive; + RESUME = new CountDownLatch(1); + // restart a new region server, and wait until it finish initialization and want to call + // regionServerReport, so it will load the peer state to peer cache. + Future regionServerFuture = ForkJoinPool.commonPool() + .submit(() -> UTIL.getMiniHBaseCluster().startRegionServer().getRegionServer()); + ARRIVE.await(); + // try move region to the new region server, it will fail, but we need to make sure that we do + // not try to assign it to the new server. + HRegionServer src = UTIL.getRSForFirstRegionInTable(NAME); + HRegionServer dst = UTIL.getOtherRegionServer(src); + try { + UTIL.getAdmin().move(UTIL.getAdmin().getRegions(NAME).get(0).getEncodedNameAsBytes(), + dst.getServerName()); + // assert the region should still on the original region server, and we didn't call assign to + // the new server + assertSame(src, UTIL.getRSForFirstRegionInTable(NAME)); + assertFalse(ASSIGN_CALLED.get()); + } finally { + // let the region server go + RESUME.countDown(); + } + // wait the new region server online + assertSame(dst, regionServerFuture.get()); + // try move again + UTIL.getAdmin().move(UTIL.getAdmin().getRegions(NAME).get(0).getEncodedNameAsBytes(), + dst.getServerName()); + // this time the region should be on the new region server + assertSame(dst, UTIL.getRSForFirstRegionInTable(NAME)); + assertTrue(ASSIGN_CALLED.get()); + } +} diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManagerBase.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManagerBase.java index 2451f41fdb2..c3a613ce9fa 100644 --- a/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManagerBase.java +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestAssignmentManagerBase.java @@ -309,7 +309,8 @@ public abstract class TestAssignmentManagerBase { ServerName newSn = ServerName.valueOf("localhost", 10000 + newRsAdded, 1); newRsAdded++; try { - this.master.getServerManager().regionServerReport(newSn, ServerMetricsBuilder.of(newSn)); + this.master.getServerManager().regionServerReport(newSn, ServerMetricsBuilder + .newBuilder(newSn).setLastReportTimestamp(System.currentTimeMillis()).build()); } catch (YouAreDeadException e) { // should not happen throw new UncheckedIOException(e); diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRefreshPeerWhileRegionServerRestarts.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRefreshPeerWhileRegionServerRestarts.java new file mode 100644 index 00000000000..80d416c0505 --- /dev/null +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRefreshPeerWhileRegionServerRestarts.java @@ -0,0 +1,115 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.hadoop.hbase.replication.regionserver; + +import static org.junit.Assert.assertEquals; + +import java.io.IOException; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.ForkJoinPool; +import java.util.concurrent.Future; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.HBaseClassTestRule; +import org.apache.hadoop.hbase.HConstants; +import org.apache.hadoop.hbase.master.replication.DisablePeerProcedure; +import org.apache.hadoop.hbase.procedure2.Procedure; +import org.apache.hadoop.hbase.regionserver.HRegionServer; +import org.apache.hadoop.hbase.replication.ReplicationPeer; +import org.apache.hadoop.hbase.replication.ReplicationPeer.PeerState; +import org.apache.hadoop.hbase.replication.TestReplicationBase; +import org.apache.hadoop.hbase.testclassification.MasterTests; +import org.apache.hadoop.hbase.testclassification.MediumTests; +import org.junit.ClassRule; +import org.junit.Test; +import org.junit.experimental.categories.Category; + +import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos; + +/** + * This UT is used to make sure that we will not accidentally change the way to generate online + * servers. See HBASE-25774 and HBASE-25032 for more details. + */ +@Category({ MasterTests.class, MediumTests.class }) +public class TestRefreshPeerWhileRegionServerRestarts extends TestReplicationBase { + + @ClassRule + public static final HBaseClassTestRule CLASS_RULE = + HBaseClassTestRule.forClass(TestRefreshPeerWhileRegionServerRestarts.class); + + private static CountDownLatch ARRIVE; + + private static CountDownLatch RESUME; + + public static final class RegionServerForTest extends HRegionServer { + + public RegionServerForTest(Configuration conf) throws IOException { + super(conf); + } + + @Override + protected void tryRegionServerReport(long reportStartTime, long reportEndTime) + throws IOException { + if (ARRIVE != null) { + ARRIVE.countDown(); + ARRIVE = null; + try { + RESUME.await(); + } catch (InterruptedException e) { + } + } + super.tryRegionServerReport(reportStartTime, reportEndTime); + } + } + + @Test + public void testRestart() throws Exception { + UTIL1.getMiniHBaseCluster().getConfiguration().setClass(HConstants.REGION_SERVER_IMPL, + RegionServerForTest.class, HRegionServer.class); + CountDownLatch arrive = new CountDownLatch(1); + ARRIVE = arrive; + RESUME = new CountDownLatch(1); + // restart a new region server, and wait until it finish initialization and want to call + // regionServerReport, so it will load the peer state to peer cache. + Future regionServerFuture = ForkJoinPool.commonPool() + .submit(() -> UTIL1.getMiniHBaseCluster().startRegionServer().getRegionServer()); + ARRIVE.await(); + // change the peer state, wait until it reach the last state, where we have already get the + // region server list for refreshing + Future future = hbaseAdmin.disableReplicationPeerAsync(PEER_ID2); + try { + UTIL1.waitFor(30000, () -> { + for (Procedure proc : UTIL1.getMiniHBaseCluster().getMaster().getProcedures()) { + if (proc instanceof DisablePeerProcedure) { + return ((DisablePeerProcedure) proc).getCurrentStateId() == + MasterProcedureProtos.PeerModificationState.POST_PEER_MODIFICATION_VALUE; + } + } + return false; + }); + } finally { + // let the new region server go + RESUME.countDown(); + } + // wait the disable peer operation to finish + future.get(); + // assert that the peer cache on the new region server has also been refreshed + ReplicationPeer peer = regionServerFuture.get().getReplicationSourceService() + .getReplicationPeers().getPeer(PEER_ID2); + assertEquals(PeerState.DISABLED, peer.getPeerState()); + } +} diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsKillRS.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsKillRS.java index b4b62cef435..09038ddcdac 100644 --- a/hbase-server/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsKillRS.java +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsKillRS.java @@ -29,6 +29,7 @@ import java.util.List; import java.util.Map; import java.util.Set; import org.apache.hadoop.hbase.HBaseClassTestRule; +import org.apache.hadoop.hbase.HConstants; import org.apache.hadoop.hbase.NamespaceDescriptor; import org.apache.hadoop.hbase.ServerName; import org.apache.hadoop.hbase.TableName; @@ -39,6 +40,7 @@ import org.apache.hadoop.hbase.client.RegionInfo; import org.apache.hadoop.hbase.client.Table; import org.apache.hadoop.hbase.client.TableDescriptor; import org.apache.hadoop.hbase.client.TableDescriptorBuilder; +import org.apache.hadoop.hbase.ipc.MetaRWQueueRpcExecutor; import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure; import org.apache.hadoop.hbase.net.Address; import org.apache.hadoop.hbase.testclassification.MediumTests; @@ -69,6 +71,11 @@ public class TestRSGroupsKillRS extends TestRSGroupsBase { @BeforeClass public static void setUp() throws Exception { + // avoid all the handlers blocked when meta is offline, and regionServerReport can not be + // processed which causes dead lock. + TEST_UTIL.getConfiguration().setInt(HConstants.REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT, 10); + TEST_UTIL.getConfiguration() + .setFloat(MetaRWQueueRpcExecutor.META_CALL_QUEUE_READ_SHARE_CONF_KEY, 0.5f); setUpTestBeforeClass(); } @@ -262,7 +269,7 @@ public class TestRSGroupsKillRS extends TestRSGroupsBase { assertTrue(majorVersion >= 1); String lowerVersion = String.valueOf(majorVersion - 1) + originVersion.split("\\.")[1]; setFinalStatic(Version.class.getField("version"), lowerVersion); - TEST_UTIL.getMiniHBaseCluster().startRegionServer(address.getHostname(), address.getPort()); + TEST_UTIL.getMiniHBaseCluster().startRegionServer(address.getHostName(), address.getPort()); assertEquals(NUM_SLAVES_BASE, TEST_UTIL.getMiniHBaseCluster().getLiveRegionServerThreads().size()); assertTrue(VersionInfo.compareVersion(originVersion,