| /* |
| * 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.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionStateTransitionState.REGION_STATE_TRANSITION_OPEN; |
| import static org.junit.Assert.assertThrows; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtil; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.client.Admin; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.master.assignment.TransitRegionStateProcedure.TransitionType; |
| import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv; |
| import org.apache.hadoop.hbase.procedure2.Procedure; |
| import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException; |
| import org.apache.hadoop.hbase.procedure2.ProcedureYieldException; |
| import org.apache.hadoop.hbase.testclassification.LargeTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.rules.TestName; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionStateTransitionState; |
| |
| /** |
| * Tests bypass on a region assign/unassign |
| */ |
| @Category({ LargeTests.class }) |
| public class TestRegionBypass { |
| private final static Logger LOG = LoggerFactory.getLogger(TestRegionBypass.class); |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRegionBypass.class); |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| private static final HBaseTestingUtil TEST_UTIL = new HBaseTestingUtil(); |
| private TableName tableName; |
| |
| @BeforeClass |
| public static void startCluster() throws Exception { |
| TEST_UTIL.startMiniCluster(2); |
| } |
| |
| @AfterClass |
| public static void stopCluster() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| @Before |
| public void before() throws IOException { |
| this.tableName = TableName.valueOf(this.name.getMethodName()); |
| // Create a table. Has one region at least. |
| TEST_UTIL.createTable(this.tableName, Bytes.toBytes("cf")); |
| |
| } |
| |
| @Test |
| public void testBypass() throws IOException, InterruptedException { |
| Admin admin = TEST_UTIL.getAdmin(); |
| MasterProcedureEnv env = |
| TEST_UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor().getEnvironment(); |
| List<RegionInfo> regions = admin.getRegions(this.tableName); |
| for (RegionInfo ri : regions) { |
| admin.unassign(ri.getRegionName()); |
| } |
| List<Long> pids = new ArrayList<>(regions.size()); |
| for (RegionInfo ri : regions) { |
| Procedure<MasterProcedureEnv> p = |
| new StallingAssignProcedure(env, ri, null, false, TransitionType.ASSIGN); |
| pids.add( |
| TEST_UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor().submitProcedure(p)); |
| } |
| TEST_UTIL.waitFor(30000, () -> pids.stream().allMatch( |
| pid -> TEST_UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor().isStarted(pid))); |
| List<Procedure<MasterProcedureEnv>> ps = |
| TEST_UTIL.getHBaseCluster().getMaster().getMasterProcedureExecutor().getProcedures(); |
| for (Procedure<MasterProcedureEnv> p : ps) { |
| if (p instanceof StallingAssignProcedure) { |
| List<Boolean> bs = |
| TEST_UTIL.getHbck().bypassProcedure(Arrays.asList(p.getProcId()), 1000, true, false); |
| for (Boolean b : bs) { |
| LOG.info("BYPASSED {} {}", p.getProcId(), b); |
| } |
| } |
| } |
| // Try and assign WITHOUT override flag. Should fail!. |
| for (RegionInfo ri : regions) { |
| IOException error = assertThrows(IOException.class, () -> admin.assign(ri.getRegionName())); |
| LOG.info("Expected {}", error); |
| } |
| TEST_UTIL.waitFor(30000, () -> TEST_UTIL.getHBaseCluster().getMaster() |
| .getMasterProcedureExecutor().getActiveProcIds().isEmpty()); |
| // Now assign with the override flag. |
| for (RegionInfo ri : regions) { |
| TEST_UTIL.getHbck().assigns(Arrays.<String> asList(ri.getEncodedName()), true, true); |
| } |
| TEST_UTIL.waitFor(60000, () -> TEST_UTIL.getHBaseCluster().getMaster() |
| .getMasterProcedureExecutor().getActiveProcIds().isEmpty()); |
| for (RegionInfo ri : regions) { |
| assertTrue(ri.toString(), TEST_UTIL.getMiniHBaseCluster().getMaster().getAssignmentManager() |
| .getRegionStates().isRegionOnline(ri)); |
| } |
| } |
| |
| /** |
| * An AssignProcedure that Stalls just before the finish. |
| */ |
| public static class StallingAssignProcedure extends TransitRegionStateProcedure { |
| public final CountDownLatch latch = new CountDownLatch(2); |
| |
| public StallingAssignProcedure() { |
| } |
| |
| public StallingAssignProcedure(MasterProcedureEnv env, RegionInfo hri, |
| ServerName assignCandidate, boolean forceNewPlan, TransitionType type) { |
| super(env, hri, assignCandidate, forceNewPlan, type); |
| init(env); |
| } |
| |
| private void init(MasterProcedureEnv env) { |
| RegionStateNode regionNode = |
| env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(getRegion()); |
| regionNode.setProcedure(this); |
| } |
| |
| @Override |
| protected Flow executeFromState(MasterProcedureEnv env, RegionStateTransitionState state) |
| throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException { |
| // add a sleep so we will not consume all the CPUs and write a bunch of logs |
| Thread.sleep(100); |
| switch (state) { |
| case REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE: |
| LOG.info("LATCH1 {}", this.latch.getCount()); |
| this.latch.countDown(); |
| setNextState(REGION_STATE_TRANSITION_OPEN); |
| return Flow.HAS_MORE_STATE; |
| case REGION_STATE_TRANSITION_OPEN: |
| if (latch.getCount() == 0) { |
| LOG.info("LATCH3 {}", this.latch.getCount()); |
| return Flow.NO_MORE_STATE; |
| } else { |
| LOG.info("LATCH2 {}", this.latch.getCount()); |
| return Flow.HAS_MORE_STATE; |
| } |
| default: |
| throw new UnsupportedOperationException("unhandled state=" + state); |
| } |
| } |
| } |
| } |