Examples with HMaster org.apache.hadoop.hbase.master.HMaster used on opensource projects

Example 26 with HMaster

use of org.apache.hadoop.hbase.master.HMaster in project hbase by apache.

the class TestAsyncRegionAdminApi method createTableAndGetOneRegion.

RegionInfo createTableAndGetOneRegion(final TableName tableName) throws IOException, InterruptedException, ExecutionException {
    TableDescriptor desc = TableDescriptorBuilder.newBuilder(tableName).setColumnFamily(ColumnFamilyDescriptorBuilder.of(FAMILY)).build();
    admin.createTable(desc, Bytes.toBytes("A"), Bytes.toBytes("Z"), 5).get();
    // wait till the table is assigned
    HMaster master = TEST_UTIL.getHBaseCluster().getMaster();
    long timeoutTime = EnvironmentEdgeManager.currentTime() + 3000;
    while (true) {
        List<RegionInfo> regions = master.getAssignmentManager().getRegionStates().getRegionsOfTable(tableName);
        if (regions.size() > 3) {
            return regions.get(2);
        }
        long now = EnvironmentEdgeManager.currentTime();
        if (now > timeoutTime) {
            fail("Could not find an online region");
        }
        Thread.sleep(10);
    }
}

Example 27 with HMaster

use of org.apache.hadoop.hbase.master.HMaster in project hbase by apache.

the class HBaseTestingUtility method expireMasterSession.

/**
 * Expire the Master's session
 * @throws Exception
 */
public void expireMasterSession() throws Exception {
    HMaster master = getMiniHBaseCluster().getMaster();
    expireSession(master.getZooKeeper(), false);
}

Example 28 with HMaster

use of org.apache.hadoop.hbase.master.HMaster in project hbase by apache.

the class HBaseTestingUtility method moveRegionAndWait.

/**
 * Move region to destination server and wait till region is completely moved and online
 *
 * @param destRegion region to move
 * @param destServer destination server of the region
 * @throws InterruptedException
 * @throws IOException
 */
public void moveRegionAndWait(RegionInfo destRegion, ServerName destServer) throws InterruptedException, IOException {
    HMaster master = getMiniHBaseCluster().getMaster();
    // TODO: Here we start the move. The move can take a while.
    getAdmin().move(destRegion.getEncodedNameAsBytes(), destServer);
    while (true) {
        ServerName serverName = master.getAssignmentManager().getRegionStates().getRegionServerOfRegion(destRegion);
        if (serverName != null && serverName.equals(destServer)) {
            assertRegionOnServer(destRegion, serverName, 2000);
            break;
        }
        Thread.sleep(10);
    }
}

Example 29 with HMaster

use of org.apache.hadoop.hbase.master.HMaster in project hbase by apache.

the class TestSeparateClientZKCluster method testMasterSwitch.

@Test
public void testMasterSwitch() throws Exception {
    // get an admin instance and issue some request first
    Connection conn = TEST_UTIL.getConnection();
    try (Admin admin = conn.getAdmin()) {
        LOG.debug("Tables: " + admin.listTableDescriptors());
        SingleProcessHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
        // switch active master
        HMaster master = cluster.getMaster();
        master.stopMaster();
        LOG.info("Stopped master {}", master.getServerName());
        while (master.isAlive()) {
            Thread.sleep(200);
        }
        LOG.info("Shutdown master {}", master.getServerName());
        while (cluster.getMaster() == null || !cluster.getMaster().isInitialized()) {
            LOG.info("Get master {}", cluster.getMaster() == null ? "null" : cluster.getMaster().getServerName());
            Thread.sleep(200);
        }
        LOG.info("Got master {}", cluster.getMaster().getServerName());
        // confirm client access still works
        assertTrue(admin.balance(BalanceRequest.defaultInstance()).isBalancerRan());
    }
}

Example 30 with HMaster

use of org.apache.hadoop.hbase.master.HMaster in project hbase by apache.

the class TestMasterObserverPostCalls method testPostCreateNamespace.

@Test
public void testPostCreateNamespace() throws IOException {
    final Admin admin = UTIL.getAdmin();
    final String ns = "postcreatens";
    HMaster master = UTIL.getMiniHBaseCluster().getMaster();
    MasterObserverForTest observer = master.getMasterCoprocessorHost().findCoprocessor(MasterObserverForTest.class);
    // Validate that the post hook is called
    int preCount = observer.postHookCalls.get();
    NamespaceDescriptor nsDesc = NamespaceDescriptor.create(ns).build();
    admin.createNamespace(nsDesc);
    int postCount = observer.postHookCalls.get();
    assertEquals("Expected 1 invocation of postModifyNamespace", preCount + 1, postCount);
    // Then, validate that it's not called when the call fails
    preCount = observer.postHookCalls.get();
    try {
        admin.createNamespace(nsDesc);
        fail("Creating an already present namespace should fail");
    } catch (IOException e) {
    // Pass
    }
    postCount = observer.postHookCalls.get();
    assertEquals("Expected no invocations of postModifyNamespace when the operation fails", preCount, postCount);
}