| /** |
| * 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.regionserver; |
| |
| import java.io.IOException; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.NotServingRegionException; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.Put; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.client.RegionInfoBuilder; |
| import org.apache.hadoop.hbase.client.RegionLocator; |
| import org.apache.hadoop.hbase.client.Table; |
| import org.apache.hadoop.hbase.client.TableDescriptor; |
| import org.apache.hadoop.hbase.master.HMaster; |
| import org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.testclassification.RegionServerTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.JVMClusterUtil.RegionServerThread; |
| import org.apache.hadoop.hbase.util.Threads; |
| import org.apache.hadoop.hbase.zookeeper.MetaTableLocator; |
| import org.apache.hadoop.hbase.zookeeper.ZKWatcher; |
| import org.junit.AfterClass; |
| import org.junit.Assert; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil; |
| import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos; |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.CloseRegionRequest; |
| |
| /** |
| * Tests on the region server, without the master. |
| */ |
| @Category({RegionServerTests.class, MediumTests.class}) |
| public class TestRegionServerNoMaster { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRegionServerNoMaster.class); |
| |
| private static final Logger LOG = LoggerFactory.getLogger(TestRegionServerNoMaster.class); |
| private static final int NB_SERVERS = 1; |
| private static Table table; |
| private static final byte[] row = Bytes.toBytes("ee"); |
| |
| private static RegionInfo hri; |
| |
| private static byte[] regionName; |
| private static final HBaseTestingUtility HTU = new HBaseTestingUtility(); |
| |
| |
| @BeforeClass |
| public static void before() throws Exception { |
| HTU.startMiniCluster(NB_SERVERS); |
| final TableName tableName = TableName.valueOf(TestRegionServerNoMaster.class.getSimpleName()); |
| |
| // Create table then get the single region for our new table. |
| table = HTU.createTable(tableName,HConstants.CATALOG_FAMILY); |
| Put p = new Put(row); |
| p.addColumn(HConstants.CATALOG_FAMILY, row, row); |
| table.put(p); |
| |
| try (RegionLocator locator = HTU.getConnection().getRegionLocator(tableName)) { |
| hri = locator.getRegionLocation(row, false).getRegion(); |
| } |
| regionName = hri.getRegionName(); |
| |
| stopMasterAndAssignMeta(HTU); |
| } |
| |
| public static void stopMasterAndAssignMeta(HBaseTestingUtility HTU) |
| throws IOException, InterruptedException { |
| // Stop master |
| HMaster master = HTU.getHBaseCluster().getMaster(); |
| Thread masterThread = HTU.getHBaseCluster().getMasterThread(); |
| ServerName masterAddr = master.getServerName(); |
| master.stopMaster(); |
| |
| LOG.info("Waiting until master thread exits"); |
| while (masterThread != null && masterThread.isAlive()) { |
| Threads.sleep(100); |
| } |
| |
| HRegionServer.TEST_SKIP_REPORTING_TRANSITION = true; |
| // Master is down, so is the meta. We need to assign it somewhere |
| // so that regions can be assigned during the mocking phase. |
| HRegionServer hrs = HTU.getHBaseCluster() |
| .getLiveRegionServerThreads().get(0).getRegionServer(); |
| ZKWatcher zkw = hrs.getZooKeeper(); |
| ServerName sn = MetaTableLocator.getMetaRegionLocation(zkw); |
| if (sn != null && !masterAddr.equals(sn)) { |
| return; |
| } |
| |
| ProtobufUtil.openRegion(null, hrs.getRSRpcServices(), |
| hrs.getServerName(), RegionInfoBuilder.FIRST_META_REGIONINFO); |
| while (true) { |
| sn = MetaTableLocator.getMetaRegionLocation(zkw); |
| if (sn != null && sn.equals(hrs.getServerName()) |
| && hrs.getOnlineRegions().containsKey( |
| RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedName())) { |
| break; |
| } |
| Thread.sleep(100); |
| } |
| } |
| |
| /** Flush the given region in the mini cluster. Since no master, we cannot use HBaseAdmin.flush() */ |
| public static void flushRegion(HBaseTestingUtility HTU, RegionInfo regionInfo) |
| throws IOException { |
| for (RegionServerThread rst : HTU.getMiniHBaseCluster().getRegionServerThreads()) { |
| HRegion region = rst.getRegionServer().getRegionByEncodedName(regionInfo.getEncodedName()); |
| if (region != null) { |
| region.flush(true); |
| return; |
| } |
| } |
| throw new IOException("Region to flush cannot be found"); |
| } |
| |
| @AfterClass |
| public static void afterClass() throws Exception { |
| HRegionServer.TEST_SKIP_REPORTING_TRANSITION = false; |
| if (table != null) { |
| table.close(); |
| } |
| HTU.shutdownMiniCluster(); |
| } |
| |
| private static HRegionServer getRS() { |
| return HTU.getHBaseCluster().getLiveRegionServerThreads().get(0).getRegionServer(); |
| } |
| |
| |
| public static void openRegion(HBaseTestingUtility HTU, HRegionServer rs, RegionInfo hri) |
| throws Exception { |
| AdminProtos.OpenRegionRequest orr = |
| RequestConverter.buildOpenRegionRequest(rs.getServerName(), hri, null); |
| AdminProtos.OpenRegionResponse responseOpen = rs.rpcServices.openRegion(null, orr); |
| |
| Assert.assertTrue(responseOpen.getOpeningStateCount() == 1); |
| Assert.assertTrue(responseOpen.getOpeningState(0). |
| equals(AdminProtos.OpenRegionResponse.RegionOpeningState.OPENED)); |
| |
| |
| checkRegionIsOpened(HTU, rs, hri); |
| } |
| |
| public static void checkRegionIsOpened(HBaseTestingUtility HTU, HRegionServer rs, |
| RegionInfo hri) throws Exception { |
| while (!rs.getRegionsInTransitionInRS().isEmpty()) { |
| Thread.sleep(1); |
| } |
| |
| Assert.assertTrue(rs.getRegion(hri.getRegionName()).isAvailable()); |
| } |
| |
| public static void closeRegion(HBaseTestingUtility HTU, HRegionServer rs, RegionInfo hri) |
| throws Exception { |
| AdminProtos.CloseRegionRequest crr = ProtobufUtil.buildCloseRegionRequest( |
| rs.getServerName(), hri.getRegionName()); |
| AdminProtos.CloseRegionResponse responseClose = rs.rpcServices.closeRegion(null, crr); |
| Assert.assertTrue(responseClose.getClosed()); |
| checkRegionIsClosed(HTU, rs, hri); |
| } |
| |
| public static void checkRegionIsClosed(HBaseTestingUtility HTU, HRegionServer rs, |
| RegionInfo hri) throws Exception { |
| while (!rs.getRegionsInTransitionInRS().isEmpty()) { |
| Thread.sleep(1); |
| } |
| |
| try { |
| Assert.assertFalse(rs.getRegion(hri.getRegionName()).isAvailable()); |
| } catch (NotServingRegionException expected) { |
| // That's how it work: if the region is closed we have an exception. |
| } |
| } |
| |
| /** |
| * Close the region without using ZK |
| */ |
| private void closeRegionNoZK() throws Exception { |
| // no transition in ZK |
| AdminProtos.CloseRegionRequest crr = |
| ProtobufUtil.buildCloseRegionRequest(getRS().getServerName(), regionName); |
| AdminProtos.CloseRegionResponse responseClose = getRS().rpcServices.closeRegion(null, crr); |
| Assert.assertTrue(responseClose.getClosed()); |
| |
| // now waiting & checking. After a while, the transition should be done and the region closed |
| checkRegionIsClosed(HTU, getRS(), hri); |
| } |
| |
| |
| @Test |
| public void testCloseByRegionServer() throws Exception { |
| closeRegionNoZK(); |
| openRegion(HTU, getRS(), hri); |
| } |
| |
| @Test |
| public void testMultipleCloseFromMaster() throws Exception { |
| for (int i = 0; i < 10; i++) { |
| AdminProtos.CloseRegionRequest crr = |
| ProtobufUtil.buildCloseRegionRequest(getRS().getServerName(), regionName, null); |
| try { |
| AdminProtos.CloseRegionResponse responseClose = getRS().rpcServices.closeRegion(null, crr); |
| Assert.assertTrue("request " + i + " failed", |
| responseClose.getClosed() || responseClose.hasClosed()); |
| } catch (org.apache.hbase.thirdparty.com.google.protobuf.ServiceException se) { |
| Assert.assertTrue("The next queries may throw an exception.", i > 0); |
| } |
| } |
| |
| checkRegionIsClosed(HTU, getRS(), hri); |
| |
| openRegion(HTU, getRS(), hri); |
| } |
| |
| /** |
| * Test that if we do a close while opening it stops the opening. |
| */ |
| @Test |
| public void testCancelOpeningWithoutZK() throws Exception { |
| // We close |
| closeRegionNoZK(); |
| checkRegionIsClosed(HTU, getRS(), hri); |
| |
| // Let do the initial steps, without having a handler |
| getRS().getRegionsInTransitionInRS().put(hri.getEncodedNameAsBytes(), Boolean.TRUE); |
| |
| // That's a close without ZK. |
| AdminProtos.CloseRegionRequest crr = |
| ProtobufUtil.buildCloseRegionRequest(getRS().getServerName(), regionName); |
| try { |
| getRS().rpcServices.closeRegion(null, crr); |
| Assert.assertTrue(false); |
| } catch (org.apache.hbase.thirdparty.com.google.protobuf.ServiceException expected) { |
| } |
| |
| // The state in RIT should have changed to close |
| Assert.assertEquals(Boolean.FALSE, getRS().getRegionsInTransitionInRS().get( |
| hri.getEncodedNameAsBytes())); |
| |
| // Let's start the open handler |
| TableDescriptor htd = getRS().tableDescriptors.get(hri.getTable()); |
| |
| getRS().executorService.submit(new OpenRegionHandler(getRS(), getRS(), hri, htd, -1)); |
| |
| // The open handler should have removed the region from RIT but kept the region closed |
| checkRegionIsClosed(HTU, getRS(), hri); |
| |
| openRegion(HTU, getRS(), hri); |
| } |
| |
| /** |
| * Tests an on-the-fly RPC that was scheduled for the earlier RS on the same port |
| * for openRegion. The region server should reject this RPC. (HBASE-9721) |
| */ |
| @Test |
| public void testOpenCloseRegionRPCIntendedForPreviousServer() throws Exception { |
| Assert.assertTrue(getRS().getRegion(regionName).isAvailable()); |
| |
| ServerName sn = getRS().getServerName(); |
| ServerName earlierServerName = ServerName.valueOf(sn.getHostname(), sn.getPort(), 1); |
| |
| try { |
| CloseRegionRequest request = ProtobufUtil.buildCloseRegionRequest(earlierServerName, regionName); |
| getRS().getRSRpcServices().closeRegion(null, request); |
| Assert.fail("The closeRegion should have been rejected"); |
| } catch (org.apache.hbase.thirdparty.com.google.protobuf.ServiceException se) { |
| Assert.assertTrue(se.getCause() instanceof IOException); |
| Assert.assertTrue(se.getCause().getMessage().contains("This RPC was intended for a different server")); |
| } |
| |
| //actual close |
| closeRegionNoZK(); |
| try { |
| AdminProtos.OpenRegionRequest orr = RequestConverter.buildOpenRegionRequest( |
| earlierServerName, hri, null); |
| getRS().getRSRpcServices().openRegion(null, orr); |
| Assert.fail("The openRegion should have been rejected"); |
| } catch (org.apache.hbase.thirdparty.com.google.protobuf.ServiceException se) { |
| Assert.assertTrue(se.getCause() instanceof IOException); |
| Assert.assertTrue(se.getCause().getMessage().contains("This RPC was intended for a different server")); |
| } finally { |
| openRegion(HTU, getRS(), hri); |
| } |
| } |
| } |