| /** |
| * 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; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicReference; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.CatalogFamilyFormat; |
| import org.apache.hadoop.hbase.ClientMetaTableAccessor; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.MetaTableAccessor; |
| import org.apache.hadoop.hbase.MiniHBaseCluster; |
| import org.apache.hadoop.hbase.PleaseHoldException; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.UnknownRegionException; |
| import org.apache.hadoop.hbase.client.Admin; |
| import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor; |
| import org.apache.hadoop.hbase.client.ColumnFamilyDescriptorBuilder; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.client.RegionInfoBuilder; |
| import org.apache.hadoop.hbase.client.Result; |
| 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.client.TableState; |
| import org.apache.hadoop.hbase.testclassification.MasterTests; |
| import org.apache.hadoop.hbase.testclassification.MediumTests; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.HBaseFsck; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.hadoop.hbase.util.Threads; |
| import org.apache.hadoop.util.StringUtils; |
| import org.junit.AfterClass; |
| 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.hbase.thirdparty.com.google.common.base.Joiner; |
| |
| @Category({MasterTests.class, MediumTests.class}) |
| public class TestMaster { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestMaster.class); |
| |
| private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| private static final Logger LOG = LoggerFactory.getLogger(TestMaster.class); |
| private static final TableName TABLENAME = TableName.valueOf("TestMaster"); |
| private static final byte[] FAMILYNAME = Bytes.toBytes("fam"); |
| private static Admin admin; |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| @BeforeClass |
| public static void beforeAllTests() throws Exception { |
| // we will retry operations when PleaseHoldException is thrown |
| TEST_UTIL.getConfiguration().setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 3); |
| // Start a cluster of two regionservers. |
| TEST_UTIL.startMiniCluster(2); |
| admin = TEST_UTIL.getAdmin(); |
| } |
| |
| @AfterClass |
| public static void afterAllTests() throws Exception { |
| TEST_UTIL.shutdownMiniCluster(); |
| } |
| |
| /** |
| * Return the region and current deployment for the region containing the given row. If the region |
| * cannot be found, returns null. If it is found, but not currently deployed, the second element |
| * of the pair may be null. |
| */ |
| private Pair<RegionInfo, ServerName> getTableRegionForRow(HMaster master, TableName tableName, |
| byte[] rowKey) throws IOException { |
| final AtomicReference<Pair<RegionInfo, ServerName>> result = new AtomicReference<>(null); |
| |
| ClientMetaTableAccessor.Visitor visitor = new ClientMetaTableAccessor.Visitor() { |
| @Override |
| public boolean visit(Result data) throws IOException { |
| if (data == null || data.size() <= 0) { |
| return true; |
| } |
| Pair<RegionInfo, ServerName> pair = new Pair<>(CatalogFamilyFormat.getRegionInfo(data), |
| CatalogFamilyFormat.getServerName(data, 0)); |
| if (!pair.getFirst().getTable().equals(tableName)) { |
| return false; |
| } |
| result.set(pair); |
| return true; |
| } |
| }; |
| |
| MetaTableAccessor.scanMeta(master.getConnection(), visitor, tableName, rowKey, 1); |
| return result.get(); |
| } |
| |
| @Test |
| @SuppressWarnings("deprecation") |
| public void testMasterOpsWhileSplitting() throws Exception { |
| MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster(); |
| HMaster m = cluster.getMaster(); |
| |
| try (Table ht = TEST_UTIL.createTable(TABLENAME, FAMILYNAME)) { |
| assertTrue(m.getTableStateManager().isTableState(TABLENAME, TableState.State.ENABLED)); |
| TEST_UTIL.loadTable(ht, FAMILYNAME, false); |
| } |
| |
| List<Pair<RegionInfo, ServerName>> tableRegions = MetaTableAccessor.getTableRegionsAndLocations( |
| m.getConnection(), TABLENAME); |
| LOG.info("Regions after load: " + Joiner.on(',').join(tableRegions)); |
| assertEquals(1, tableRegions.size()); |
| assertArrayEquals(HConstants.EMPTY_START_ROW, |
| tableRegions.get(0).getFirst().getStartKey()); |
| assertArrayEquals(HConstants.EMPTY_END_ROW, |
| tableRegions.get(0).getFirst().getEndKey()); |
| |
| // Now trigger a split and stop when the split is in progress |
| LOG.info("Splitting table"); |
| TEST_UTIL.getAdmin().split(TABLENAME); |
| |
| LOG.info("Making sure we can call getTableRegions while opening"); |
| while (tableRegions.size() < 3) { |
| tableRegions = MetaTableAccessor.getTableRegionsAndLocations(m.getConnection(), |
| TABLENAME, false); |
| Thread.sleep(100); |
| } |
| LOG.info("Regions: " + Joiner.on(',').join(tableRegions)); |
| // We have three regions because one is split-in-progress |
| assertEquals(3, tableRegions.size()); |
| LOG.info("Making sure we can call getTableRegionClosest while opening"); |
| Pair<RegionInfo, ServerName> pair = getTableRegionForRow(m, TABLENAME, Bytes.toBytes("cde")); |
| LOG.info("Result is: " + pair); |
| Pair<RegionInfo, ServerName> tableRegionFromName = |
| MetaTableAccessor.getRegion(m.getConnection(), |
| pair.getFirst().getRegionName()); |
| assertTrue(RegionInfo.COMPARATOR.compare(tableRegionFromName.getFirst(), pair.getFirst()) == 0); |
| } |
| |
| @Test |
| public void testMoveRegionWhenNotInitialized() { |
| MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster(); |
| HMaster m = cluster.getMaster(); |
| try { |
| m.setInitialized(false); // fake it, set back later |
| RegionInfo meta = RegionInfoBuilder.FIRST_META_REGIONINFO; |
| m.move(meta.getEncodedNameAsBytes(), null); |
| fail("Region should not be moved since master is not initialized"); |
| } catch (IOException ioe) { |
| assertTrue(ioe instanceof PleaseHoldException); |
| } finally { |
| m.setInitialized(true); |
| } |
| } |
| |
| @Test |
| public void testMoveThrowsUnknownRegionException() throws IOException { |
| final TableName tableName = TableName.valueOf(name.getMethodName()); |
| TableDescriptorBuilder tableDescriptorBuilder = |
| TableDescriptorBuilder.newBuilder(tableName); |
| ColumnFamilyDescriptor columnFamilyDescriptor = |
| ColumnFamilyDescriptorBuilder.newBuilder(Bytes.toBytes("value")).build(); |
| tableDescriptorBuilder.setColumnFamily(columnFamilyDescriptor); |
| |
| admin.createTable(tableDescriptorBuilder.build()); |
| try { |
| RegionInfo hri = RegionInfoBuilder.newBuilder(tableName) |
| .setStartKey(Bytes.toBytes("A")) |
| .setEndKey(Bytes.toBytes("Z")) |
| .build(); |
| admin.move(hri.getEncodedNameAsBytes()); |
| fail("Region should not be moved since it is fake"); |
| } catch (IOException ioe) { |
| assertTrue(ioe instanceof UnknownRegionException); |
| } finally { |
| TEST_UTIL.deleteTable(tableName); |
| } |
| } |
| |
| @Test |
| public void testMoveThrowsPleaseHoldException() throws IOException { |
| final TableName tableName = TableName.valueOf(name.getMethodName()); |
| HMaster master = TEST_UTIL.getMiniHBaseCluster().getMaster(); |
| TableDescriptorBuilder tableDescriptorBuilder = |
| TableDescriptorBuilder.newBuilder(tableName); |
| ColumnFamilyDescriptor columnFamilyDescriptor = |
| ColumnFamilyDescriptorBuilder.newBuilder(Bytes.toBytes("value")).build(); |
| tableDescriptorBuilder.setColumnFamily(columnFamilyDescriptor); |
| |
| admin.createTable(tableDescriptorBuilder.build()); |
| try { |
| List<RegionInfo> tableRegions = admin.getRegions(tableName); |
| |
| master.setInitialized(false); // fake it, set back later |
| admin.move(tableRegions.get(0).getEncodedNameAsBytes()); |
| fail("Region should not be moved since master is not initialized"); |
| } catch (IOException ioe) { |
| assertTrue(StringUtils.stringifyException(ioe).contains("PleaseHoldException")); |
| } finally { |
| master.setInitialized(true); |
| TEST_UTIL.deleteTable(tableName); |
| } |
| } |
| |
| @Test |
| public void testFlushedSequenceIdPersistLoad() throws Exception { |
| Configuration conf = TEST_UTIL.getConfiguration(); |
| int msgInterval = conf.getInt("hbase.regionserver.msginterval", 100); |
| // insert some data into META |
| TableName tableName = TableName.valueOf("testFlushSeqId"); |
| TableDescriptor tableDescriptor = TableDescriptorBuilder.newBuilder(tableName) |
| .setColumnFamily(ColumnFamilyDescriptorBuilder.of(Bytes.toBytes("cf"))).build(); |
| Table table = TEST_UTIL.createTable(tableDescriptor, null); |
| // flush META region |
| TEST_UTIL.flush(TableName.META_TABLE_NAME); |
| // wait for regionserver report |
| Threads.sleep(msgInterval * 2); |
| // record flush seqid before cluster shutdown |
| Map<byte[], Long> regionMapBefore = |
| TEST_UTIL.getHBaseCluster().getMaster().getServerManager() |
| .getFlushedSequenceIdByRegion(); |
| // restart hbase cluster which will cause flushed sequence id persist and reload |
| TEST_UTIL.getMiniHBaseCluster().shutdown(); |
| TEST_UTIL.restartHBaseCluster(2); |
| TEST_UTIL.waitUntilNoRegionsInTransition(); |
| // check equality after reloading flushed sequence id map |
| Map<byte[], Long> regionMapAfter = |
| TEST_UTIL.getHBaseCluster().getMaster().getServerManager() |
| .getFlushedSequenceIdByRegion(); |
| assertTrue(regionMapBefore.equals(regionMapAfter)); |
| } |
| |
| @Test |
| public void testBlockingHbkc1WithLockFile() throws IOException { |
| // This is how the patch to the lock file is created inside in HBaseFsck. Too hard to use its |
| // actual method without disturbing HBaseFsck... Do the below mimic instead. |
| Path hbckLockPath = new Path(HBaseFsck.getTmpDir(TEST_UTIL.getConfiguration()), |
| HBaseFsck.HBCK_LOCK_FILE); |
| FileSystem fs = TEST_UTIL.getTestFileSystem(); |
| assertTrue(fs.exists(hbckLockPath)); |
| TEST_UTIL.getMiniHBaseCluster(). |
| killMaster(TEST_UTIL.getMiniHBaseCluster().getMaster().getServerName()); |
| assertTrue(fs.exists(hbckLockPath)); |
| TEST_UTIL.getMiniHBaseCluster().startMaster(); |
| TEST_UTIL.waitFor(30000, () -> TEST_UTIL.getMiniHBaseCluster().getMaster() != null && |
| TEST_UTIL.getMiniHBaseCluster().getMaster().isInitialized()); |
| assertTrue(fs.exists(hbckLockPath)); |
| // Start a second Master. Should be fine. |
| TEST_UTIL.getMiniHBaseCluster().startMaster(); |
| assertTrue(fs.exists(hbckLockPath)); |
| fs.delete(hbckLockPath, true); |
| assertFalse(fs.exists(hbckLockPath)); |
| // Kill all Masters. |
| TEST_UTIL.getMiniHBaseCluster().getLiveMasterThreads().stream(). |
| map(sn -> sn.getMaster().getServerName()).forEach(sn -> { |
| try { |
| TEST_UTIL.getMiniHBaseCluster().killMaster(sn); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| }); |
| // Start a new one. |
| TEST_UTIL.getMiniHBaseCluster().startMaster(); |
| TEST_UTIL.waitFor(30000, () -> TEST_UTIL.getMiniHBaseCluster().getMaster() != null && |
| TEST_UTIL.getMiniHBaseCluster().getMaster().isInitialized()); |
| // Assert lock gets put in place again. |
| assertTrue(fs.exists(hbckLockPath)); |
| } |
| } |
| |