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

Example 96 with HRegionInfo

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

the class TestBaseLoadBalancer method assignRegions.

private void assignRegions(List<HRegionInfo> regions, List<ServerName> servers, Map<ServerName, List<HRegionInfo>> clusterState) {
    for (int i = 0; i < regions.size(); i++) {
        ServerName sn = servers.get(i % servers.size());
        List<HRegionInfo> regionsOfServer = clusterState.get(sn);
        if (regionsOfServer == null) {
            regionsOfServer = new ArrayList<>(10);
            clusterState.put(sn, regionsOfServer);
        }
        regionsOfServer.add(regions.get(i));
    }
}

Example 97 with HRegionInfo

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

the class TestStochasticLoadBalancer method testNeedsBalanceForColocatedReplicas.

@Test
public void testNeedsBalanceForColocatedReplicas() {
    // check for the case where there are two hosts and with one rack, and where
    // both the replicas are hosted on the same server
    List<HRegionInfo> regions = randomRegions(1);
    ServerName s1 = ServerName.valueOf("host1", 1000, 11111);
    ServerName s2 = ServerName.valueOf("host11", 1000, 11111);
    Map<ServerName, List<HRegionInfo>> map = new HashMap<>();
    map.put(s1, regions);
    regions.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(0), 1));
    // until the step above s1 holds two replicas of a region
    regions = randomRegions(1);
    map.put(s2, regions);
    assertTrue(loadBalancer.needsBalance(new Cluster(map, null, null, null)));
    // check for the case where there are two hosts on the same rack and there are two racks
    // and both the replicas are on the same rack
    map.clear();
    regions = randomRegions(1);
    List<HRegionInfo> regionsOnS2 = new ArrayList<>(1);
    regionsOnS2.add(RegionReplicaUtil.getRegionInfoForReplica(regions.get(0), 1));
    map.put(s1, regions);
    map.put(s2, regionsOnS2);
    // add another server so that the cluster has some host on another rack
    map.put(ServerName.valueOf("host2", 1000, 11111), randomRegions(1));
    assertTrue(loadBalancer.needsBalance(new Cluster(map, null, null, new ForTestRackManagerOne())));
}

Example 98 with HRegionInfo

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

the class TestAsyncRegionAdminApi method testCloseRegion.

@Test
public void testCloseRegion() throws Exception {
    TableName TABLENAME = TableName.valueOf("TestHBACloseRegion");
    createTableWithDefaultConf(TABLENAME);
    HRegionInfo info = null;
    HRegionServer rs = TEST_UTIL.getRSForFirstRegionInTable(TABLENAME);
    List<HRegionInfo> onlineRegions = ProtobufUtil.getOnlineRegions(rs.getRSRpcServices());
    for (HRegionInfo regionInfo : onlineRegions) {
        if (!regionInfo.getTable().isSystemTable()) {
            info = regionInfo;
            boolean closed = admin.closeRegionWithEncodedRegionName(regionInfo.getEncodedName(), rs.getServerName().getServerName()).get();
            assertTrue(closed);
        }
    }
    boolean isInList = ProtobufUtil.getOnlineRegions(rs.getRSRpcServices()).contains(info);
    long timeout = System.currentTimeMillis() + 10000;
    while ((System.currentTimeMillis() < timeout) && (isInList)) {
        Thread.sleep(100);
        isInList = ProtobufUtil.getOnlineRegions(rs.getRSRpcServices()).contains(info);
    }
    assertFalse("The region should not be present in online regions list.", isInList);
}

Example 99 with HRegionInfo

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

the class TestAsyncRegionAdminApi method testCloseRegionIfInvalidRegionNameIsPassed.

@Test
public void testCloseRegionIfInvalidRegionNameIsPassed() throws Exception {
    final String name = "TestHBACloseRegion1";
    byte[] TABLENAME = Bytes.toBytes(name);
    createTableWithDefaultConf(TableName.valueOf(TABLENAME));
    HRegionInfo info = null;
    HRegionServer rs = TEST_UTIL.getRSForFirstRegionInTable(TableName.valueOf(TABLENAME));
    List<HRegionInfo> onlineRegions = ProtobufUtil.getOnlineRegions(rs.getRSRpcServices());
    for (HRegionInfo regionInfo : onlineRegions) {
        if (!regionInfo.isMetaTable()) {
            if (regionInfo.getRegionNameAsString().contains(name)) {
                info = regionInfo;
                boolean catchNotServingException = false;
                try {
                    admin.closeRegionWithEncodedRegionName("sample", rs.getServerName().getServerName()).get();
                } catch (Exception e) {
                    catchNotServingException = true;
                // expected, ignore it
                }
                assertTrue(catchNotServingException);
            }
        }
    }
    onlineRegions = ProtobufUtil.getOnlineRegions(rs.getRSRpcServices());
    assertTrue("The region should be present in online regions list.", onlineRegions.contains(info));
}

Example 100 with HRegionInfo

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

the class TestAdmin2 method testGetRegion.

@Test(timeout = 300000)
public void testGetRegion() throws Exception {
    // We use actual HBaseAdmin instance instead of going via Admin interface in
    // here because makes use of an internal HBA method (TODO: Fix.).
    HBaseAdmin rawAdmin = TEST_UTIL.getHBaseAdmin();
    final TableName tableName = TableName.valueOf(name.getMethodName());
    LOG.info("Started " + tableName);
    Table t = TEST_UTIL.createMultiRegionTable(tableName, HConstants.CATALOG_FAMILY);
    try (RegionLocator locator = TEST_UTIL.getConnection().getRegionLocator(tableName)) {
        HRegionLocation regionLocation = locator.getRegionLocation(Bytes.toBytes("mmm"));
        HRegionInfo region = regionLocation.getRegionInfo();
        byte[] regionName = region.getRegionName();
        Pair<HRegionInfo, ServerName> pair = rawAdmin.getRegion(regionName);
        assertTrue(Bytes.equals(regionName, pair.getFirst().getRegionName()));
        pair = rawAdmin.getRegion(region.getEncodedNameAsBytes());
        assertTrue(Bytes.equals(regionName, pair.getFirst().getRegionName()));
    }
}