Examples with MiniHBaseCluster org.apache.hadoop.hbase.MiniHBaseCluster used on opensource projects

Example 71 with MiniHBaseCluster

use of org.apache.hadoop.hbase.MiniHBaseCluster in project hbase by apache.

the class TestMasterFailover method testPendingOpenOrCloseWhenMasterFailover.

/**
   * Test region in pending_open/close when master failover
   */
@Test(timeout = 180000)
public void testPendingOpenOrCloseWhenMasterFailover() throws Exception {
    final int NUM_MASTERS = 1;
    final int NUM_RS = 1;
    // Create config to use for this cluster
    Configuration conf = HBaseConfiguration.create();
    // Start the cluster
    HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(conf);
    TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    log("Cluster started");
    // get all the master threads
    List<MasterThread> masterThreads = cluster.getMasterThreads();
    assertEquals(1, masterThreads.size());
    // only one master thread, let's wait for it to be initialized
    assertTrue(cluster.waitForActiveAndReadyMaster());
    HMaster master = masterThreads.get(0).getMaster();
    assertTrue(master.isActiveMaster());
    assertTrue(master.isInitialized());
    // Create a table with a region online
    Table onlineTable = TEST_UTIL.createTable(TableName.valueOf("onlineTable"), "family");
    onlineTable.close();
    // Create a table in META, so it has a region offline
    HTableDescriptor offlineTable = new HTableDescriptor(TableName.valueOf(Bytes.toBytes("offlineTable")));
    offlineTable.addFamily(new HColumnDescriptor(Bytes.toBytes("family")));
    FileSystem filesystem = FileSystem.get(conf);
    Path rootdir = FSUtils.getRootDir(conf);
    FSTableDescriptors fstd = new FSTableDescriptors(conf, filesystem, rootdir);
    fstd.createTableDescriptor(offlineTable);
    HRegionInfo hriOffline = new HRegionInfo(offlineTable.getTableName(), null, null);
    createRegion(hriOffline, rootdir, conf, offlineTable);
    MetaTableAccessor.addRegionToMeta(master.getConnection(), hriOffline);
    log("Regions in hbase:meta and namespace have been created");
    // at this point we only expect 3 regions to be assigned out
    // (catalogs and namespace, + 1 online region)
    assertEquals(3, cluster.countServedRegions());
    HRegionInfo hriOnline = null;
    try (RegionLocator locator = TEST_UTIL.getConnection().getRegionLocator(TableName.valueOf("onlineTable"))) {
        hriOnline = locator.getRegionLocation(HConstants.EMPTY_START_ROW).getRegionInfo();
    }
    RegionStates regionStates = master.getAssignmentManager().getRegionStates();
    RegionStateStore stateStore = master.getAssignmentManager().getRegionStateStore();
    // Put the online region in pending_close. It is actually already opened.
    // This is to simulate that the region close RPC is not sent out before failover
    RegionState oldState = regionStates.getRegionState(hriOnline);
    RegionState newState = new RegionState(hriOnline, State.PENDING_CLOSE, oldState.getServerName());
    stateStore.updateRegionState(HConstants.NO_SEQNUM, newState, oldState);
    // Put the offline region in pending_open. It is actually not opened yet.
    // This is to simulate that the region open RPC is not sent out before failover
    oldState = new RegionState(hriOffline, State.OFFLINE);
    newState = new RegionState(hriOffline, State.PENDING_OPEN, newState.getServerName());
    stateStore.updateRegionState(HConstants.NO_SEQNUM, newState, oldState);
    HRegionInfo failedClose = new HRegionInfo(offlineTable.getTableName(), null, null);
    createRegion(failedClose, rootdir, conf, offlineTable);
    MetaTableAccessor.addRegionToMeta(master.getConnection(), failedClose);
    oldState = new RegionState(failedClose, State.PENDING_CLOSE);
    newState = new RegionState(failedClose, State.FAILED_CLOSE, newState.getServerName());
    stateStore.updateRegionState(HConstants.NO_SEQNUM, newState, oldState);
    HRegionInfo failedOpen = new HRegionInfo(offlineTable.getTableName(), null, null);
    createRegion(failedOpen, rootdir, conf, offlineTable);
    MetaTableAccessor.addRegionToMeta(master.getConnection(), failedOpen);
    // Simulate a region transitioning to failed open when the region server reports the
    // transition as FAILED_OPEN
    oldState = new RegionState(failedOpen, State.PENDING_OPEN);
    newState = new RegionState(failedOpen, State.FAILED_OPEN, newState.getServerName());
    stateStore.updateRegionState(HConstants.NO_SEQNUM, newState, oldState);
    HRegionInfo failedOpenNullServer = new HRegionInfo(offlineTable.getTableName(), null, null);
    LOG.info("Failed open NUll server " + failedOpenNullServer.getEncodedName());
    createRegion(failedOpenNullServer, rootdir, conf, offlineTable);
    MetaTableAccessor.addRegionToMeta(master.getConnection(), failedOpenNullServer);
    // Simulate a region transitioning to failed open when the master couldn't find a plan for
    // the region
    oldState = new RegionState(failedOpenNullServer, State.OFFLINE);
    newState = new RegionState(failedOpenNullServer, State.FAILED_OPEN, null);
    stateStore.updateRegionState(HConstants.NO_SEQNUM, newState, oldState);
    // Stop the master
    log("Aborting master");
    cluster.abortMaster(0);
    cluster.waitOnMaster(0);
    log("Master has aborted");
    // Start up a new master
    log("Starting up a new master");
    master = cluster.startMaster().getMaster();
    log("Waiting for master to be ready");
    cluster.waitForActiveAndReadyMaster();
    log("Master is ready");
    // Wait till no region in transition any more
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    // Get new region states since master restarted
    regionStates = master.getAssignmentManager().getRegionStates();
    // Both pending_open (RPC sent/not yet) regions should be online
    assertTrue(regionStates.isRegionOnline(hriOffline));
    assertTrue(regionStates.isRegionOnline(hriOnline));
    assertTrue(regionStates.isRegionOnline(failedClose));
    assertTrue(regionStates.isRegionOnline(failedOpenNullServer));
    assertTrue(regionStates.isRegionOnline(failedOpen));
    log("Done with verification, shutting down cluster");
    // Done, shutdown the cluster
    TEST_UTIL.shutdownMiniCluster();
}

Example 72 with MiniHBaseCluster

use of org.apache.hadoop.hbase.MiniHBaseCluster in project hbase by apache.

the class TestMasterFailoverBalancerPersistence method testMasterFailoverBalancerPersistence.

/**
   * Test that if the master fails, the load balancer maintains its
   * state (running or not) when the next master takes over
   *
   * @throws Exception
   */
@Test(timeout = 240000)
public void testMasterFailoverBalancerPersistence() throws Exception {
    final int NUM_MASTERS = 3;
    final int NUM_RS = 1;
    // Start the cluster
    HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
    TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    assertTrue(cluster.waitForActiveAndReadyMaster());
    HMaster active = cluster.getMaster();
    // check that the balancer is on by default for the active master
    ClusterStatus clusterStatus = active.getClusterStatus();
    assertTrue(clusterStatus.isBalancerOn());
    active = killActiveAndWaitForNewActive(cluster);
    // ensure the load balancer is still running on new master
    clusterStatus = active.getClusterStatus();
    assertTrue(clusterStatus.isBalancerOn());
    // turn off the load balancer
    active.balanceSwitch(false);
    // once more, kill active master and wait for new active master to show up
    active = killActiveAndWaitForNewActive(cluster);
    // ensure the load balancer is not running on the new master
    clusterStatus = active.getClusterStatus();
    assertFalse(clusterStatus.isBalancerOn());
    // Stop the cluster
    TEST_UTIL.shutdownMiniCluster();
}

Example 73 with MiniHBaseCluster

use of org.apache.hadoop.hbase.MiniHBaseCluster in project hbase by apache.

the class TestMetaShutdownHandler method testExpireMetaRegionServer.

/**
   * This test will test the expire handling of a meta-carrying
   * region server.
   * After HBaseMiniCluster is up, we will delete the ephemeral
   * node of the meta-carrying region server, which will trigger
   * the expire of this region server on the master.
   * On the other hand, we will slow down the abort process on
   * the region server so that it is still up during the master SSH.
   * We will check that the master SSH is still successfully done.
   */
@Test(timeout = 180000)
public void testExpireMetaRegionServer() throws Exception {
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    HMaster master = cluster.getMaster();
    RegionStates regionStates = master.getAssignmentManager().getRegionStates();
    ServerName metaServerName = regionStates.getRegionServerOfRegion(HRegionInfo.FIRST_META_REGIONINFO);
    if (master.getServerName().equals(metaServerName) || metaServerName == null || !metaServerName.equals(cluster.getServerHoldingMeta())) {
        // Move meta off master
        metaServerName = cluster.getLiveRegionServerThreads().get(0).getRegionServer().getServerName();
        master.move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(), Bytes.toBytes(metaServerName.getServerName()));
        TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    }
    RegionState metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper());
    assertEquals("Meta should be not in transition", metaState.getState(), RegionState.State.OPEN);
    assertNotEquals("Meta should be moved off master", metaServerName, master.getServerName());
    // Delete the ephemeral node of the meta-carrying region server.
    // This is trigger the expire of this region server on the master.
    String rsEphemeralNodePath = ZKUtil.joinZNode(master.getZooKeeper().znodePaths.rsZNode, metaServerName.toString());
    ZKUtil.deleteNode(master.getZooKeeper(), rsEphemeralNodePath);
    // Wait for SSH to finish
    final ServerManager serverManager = master.getServerManager();
    final ServerName priorMetaServerName = metaServerName;
    TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {

        @Override
        public boolean evaluate() throws Exception {
            return !serverManager.isServerOnline(priorMetaServerName) && !serverManager.areDeadServersInProgress();
        }
    });
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    // Now, make sure meta is assigned
    assertTrue("Meta should be assigned", regionStates.isRegionOnline(HRegionInfo.FIRST_META_REGIONINFO));
    // Now, make sure meta is registered in zk
    metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper());
    assertEquals("Meta should be not in transition", metaState.getState(), RegionState.State.OPEN);
    assertEquals("Meta should be assigned", metaState.getServerName(), regionStates.getRegionServerOfRegion(HRegionInfo.FIRST_META_REGIONINFO));
    assertNotEquals("Meta should be assigned on a different server", metaState.getServerName(), metaServerName);
}

Example 74 with MiniHBaseCluster

use of org.apache.hadoop.hbase.MiniHBaseCluster in project hbase by apache.

the class TestRegionPlacement method verifyRegionMovementNum.

/**
   * Verify the number of region movement is expected
   */
private void verifyRegionMovementNum(int expected) throws InterruptedException, IOException {
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    HMaster m = cluster.getMaster();
    int lastRegionOpenedCount = m.getAssignmentManager().getNumRegionsOpened();
    // get the assignments start to execute
    m.balance();
    int retry = 10;
    long sleep = 3000;
    int attempt = 0;
    int currentRegionOpened, regionMovement;
    do {
        currentRegionOpened = m.getAssignmentManager().getNumRegionsOpened();
        regionMovement = currentRegionOpened - lastRegionOpenedCount;
        LOG.debug("There are " + regionMovement + "/" + expected + " regions moved after " + attempt + " attempts");
        Thread.sleep((++attempt) * sleep);
    } while (regionMovement != expected && attempt <= retry);
    // update the lastRegionOpenedCount
    lastRegionOpenedCount = currentRegionOpened;
    assertEquals("There are only " + regionMovement + " instead of " + expected + " region movement for " + attempt + " attempts", regionMovement, expected);
}

Example 75 with MiniHBaseCluster

use of org.apache.hadoop.hbase.MiniHBaseCluster in project hbase by apache.

the class TestMasterRestartAfterDisablingTable method testForCheckingIfEnableAndDisableWorksFineAfterSwitch.

@Test
public void testForCheckingIfEnableAndDisableWorksFineAfterSwitch() throws Exception {
    final int NUM_MASTERS = 2;
    final int NUM_RS = 1;
    final int NUM_REGIONS_TO_CREATE = 4;
    // Start the cluster
    log("Starting cluster");
    Configuration conf = HBaseConfiguration.create();
    HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(conf);
    TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    log("Waiting for active/ready master");
    cluster.waitForActiveAndReadyMaster();
    // Create a table with regions
    final TableName tableName = TableName.valueOf(name.getMethodName());
    byte[] family = Bytes.toBytes("family");
    log("Creating table with " + NUM_REGIONS_TO_CREATE + " regions");
    Table ht = TEST_UTIL.createMultiRegionTable(tableName, family, NUM_REGIONS_TO_CREATE);
    int numRegions = -1;
    try (RegionLocator r = TEST_UTIL.getConnection().getRegionLocator(tableName)) {
        numRegions = r.getStartKeys().length;
    }
    // catalogs
    numRegions += 1;
    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Disabling table\n");
    TEST_UTIL.getAdmin().disableTable(tableName);
    NavigableSet<String> regions = HBaseTestingUtility.getAllOnlineRegions(cluster);
    assertEquals("The number of regions for the table tableRestart should be 0 and only" + "the catalog and namespace tables should be present.", 2, regions.size());
    List<MasterThread> masterThreads = cluster.getMasterThreads();
    MasterThread activeMaster = null;
    if (masterThreads.get(0).getMaster().isActiveMaster()) {
        activeMaster = masterThreads.get(0);
    } else {
        activeMaster = masterThreads.get(1);
    }
    activeMaster.getMaster().stop("stopping the active master so that the backup can become active");
    cluster.hbaseCluster.waitOnMaster(activeMaster);
    cluster.waitForActiveAndReadyMaster();
    assertTrue("The table should not be in enabled state", cluster.getMaster().getTableStateManager().isTableState(TableName.valueOf(name.getMethodName()), TableState.State.DISABLED, TableState.State.DISABLING));
    log("Enabling table\n");
    // Need a new Admin, the previous one is on the old master
    Admin admin = TEST_UTIL.getAdmin();
    admin.enableTable(tableName);
    admin.close();
    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Verifying there are " + numRegions + " assigned on cluster\n");
    regions = HBaseTestingUtility.getAllOnlineRegions(cluster);
    assertEquals("The assigned regions were not onlined after master" + " switch except for the catalog and namespace tables.", 6, regions.size());
    assertTrue("The table should be in enabled state", cluster.getMaster().getTableStateManager().isTableState(TableName.valueOf(name.getMethodName()), TableState.State.ENABLED));
    ht.close();
    TEST_UTIL.shutdownMiniCluster();
}