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

Example 41 with ServerName

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

the class MetaTableLocator method getMetaRegionState.

/**
   * Load the meta region state from the meta server ZNode.
   * @param zkw
   * @param replicaId
   * @return regionstate
   * @throws KeeperException
   */
public static RegionState getMetaRegionState(ZooKeeperWatcher zkw, int replicaId) throws KeeperException {
    RegionState.State state = RegionState.State.OPEN;
    ServerName serverName = null;
    try {
        byte[] data = ZKUtil.getData(zkw, zkw.znodePaths.getZNodeForReplica(replicaId));
        if (data != null && data.length > 0 && ProtobufUtil.isPBMagicPrefix(data)) {
            try {
                int prefixLen = ProtobufUtil.lengthOfPBMagic();
                ZooKeeperProtos.MetaRegionServer rl = ZooKeeperProtos.MetaRegionServer.PARSER.parseFrom(data, prefixLen, data.length - prefixLen);
                if (rl.hasState()) {
                    state = RegionState.State.convert(rl.getState());
                }
                HBaseProtos.ServerName sn = rl.getServer();
                serverName = ServerName.valueOf(sn.getHostName(), sn.getPort(), sn.getStartCode());
            } catch (InvalidProtocolBufferException e) {
                throw new DeserializationException("Unable to parse meta region location");
            }
        } else {
            // old style of meta region location?
            serverName = ProtobufUtil.parseServerNameFrom(data);
        }
    } catch (DeserializationException e) {
        throw ZKUtil.convert(e);
    } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
    }
    if (serverName == null) {
        state = RegionState.State.OFFLINE;
    }
    return new RegionState(RegionReplicaUtil.getRegionInfoForReplica(HRegionInfo.FIRST_META_REGIONINFO, replicaId), state, serverName);
}

Example 42 with ServerName

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

the class MetaTableLocator method blockUntilAvailable.

/**
   * Wait until the primary meta region is available. Get the secondary
   * locations as well but don't block for those.
   * @param zkw
   * @param timeout
   * @param conf
   * @return ServerName or null if we timed out.
   * @throws InterruptedException
   */
public List<ServerName> blockUntilAvailable(final ZooKeeperWatcher zkw, final long timeout, Configuration conf) throws InterruptedException {
    int numReplicasConfigured = 1;
    List<ServerName> servers = new ArrayList<>();
    // Make the blocking call first so that we do the wait to know
    // the znodes are all in place or timeout.
    ServerName server = blockUntilAvailable(zkw, timeout);
    if (server == null)
        return null;
    servers.add(server);
    try {
        List<String> metaReplicaNodes = zkw.getMetaReplicaNodes();
        numReplicasConfigured = metaReplicaNodes.size();
    } catch (KeeperException e) {
        LOG.warn("Got ZK exception " + e);
    }
    for (int replicaId = 1; replicaId < numReplicasConfigured; replicaId++) {
        // return all replica locations for the meta
        servers.add(getMetaRegionLocation(zkw, replicaId));
    }
    return servers;
}

Example 43 with ServerName

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

the class MetaTableLocator method getMetaRegionsAndLocations.

/**
   *
   * @param zkw
   * @param replicaId
   * @return meta table regions and their locations.
   */
public List<Pair<HRegionInfo, ServerName>> getMetaRegionsAndLocations(ZooKeeperWatcher zkw, int replicaId) {
    ServerName serverName = getMetaRegionLocation(zkw, replicaId);
    List<Pair<HRegionInfo, ServerName>> list = new ArrayList<>(1);
    list.add(new Pair<>(RegionReplicaUtil.getRegionInfoForReplica(HRegionInfo.FIRST_META_REGIONINFO, replicaId), serverName));
    return list;
}

Example 44 with ServerName

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

the class MetaTableLocator method blockUntilAvailable.

/**
   * Wait until the meta region is available and is not in transition.
   * @param zkw
   * @param replicaId
   * @param timeout
   * @return ServerName or null if we timed out.
   * @throws InterruptedException
   */
public ServerName blockUntilAvailable(final ZooKeeperWatcher zkw, int replicaId, final long timeout) throws InterruptedException {
    if (timeout < 0)
        throw new IllegalArgumentException();
    if (zkw == null)
        throw new IllegalArgumentException();
    long startTime = System.currentTimeMillis();
    ServerName sn = null;
    while (true) {
        sn = getMetaRegionLocation(zkw, replicaId);
        if (sn != null || (System.currentTimeMillis() - startTime) > timeout - HConstants.SOCKET_RETRY_WAIT_MS) {
            break;
        }
        Thread.sleep(HConstants.SOCKET_RETRY_WAIT_MS);
    }
    return sn;
}

Example 45 with ServerName

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

the class UnbalanceKillAndRebalanceAction method perform.

@Override
public void perform() throws Exception {
    ClusterStatus status = this.cluster.getClusterStatus();
    List<ServerName> victimServers = new LinkedList<>(status.getServers());
    Set<ServerName> killedServers = new HashSet<>();
    int liveCount = (int) Math.ceil(FRC_SERVERS_THAT_HOARD_AND_LIVE * victimServers.size());
    int deadCount = (int) Math.ceil(FRC_SERVERS_THAT_HOARD_AND_DIE * victimServers.size());
    Assert.assertTrue((liveCount + deadCount) < victimServers.size());
    List<ServerName> targetServers = new ArrayList<>(liveCount);
    for (int i = 0; i < liveCount + deadCount; ++i) {
        int victimIx = RandomUtils.nextInt(victimServers.size());
        targetServers.add(victimServers.remove(victimIx));
    }
    unbalanceRegions(status, victimServers, targetServers, HOARD_FRC_OF_REGIONS);
    Thread.sleep(waitForUnbalanceMilliSec);
    for (int i = 0; i < liveCount; ++i) {
        // trying to stop the monkey.
        if (context.isStopping()) {
            break;
        }
        killRs(targetServers.get(i));
        killedServers.add(targetServers.get(i));
    }
    Thread.sleep(waitForKillsMilliSec);
    forceBalancer();
    Thread.sleep(waitAfterBalanceMilliSec);
    for (ServerName server : killedServers) {
        startRs(server);
    }
}