Examples of org.apache.hadoop.hbase.client.HConnection.locateRegion()

Class org.apache.hadoop.hbase.client.HConnection

Examples of org.apache.hadoop.hbase.client.HConnection.locateRegion()

org.apache.hadoop.hbase.client.HConnection.locateRegion()
Find the location of the region of tableName that row lives in. @param tableName name of the table row is in @param row row key you're trying to find the region of @return HRegionLocation that describes where to find the region inquestion @throws IOException if a remote or network exception occurs

    final HRegionLocation anyLocation =
      new HRegionLocation(HRegionInfo.FIRST_META_REGIONINFO, SN);
    Mockito.when(connection.getRegionLocation((TableName) Mockito.any(),
        (byte[]) Mockito.any(), Mockito.anyBoolean())).
      thenReturn(anyLocation);
    Mockito.when(connection.locateRegion((TableName) Mockito.any(),
        (byte[]) Mockito.any())).
      thenReturn(anyLocation);
    if (admin != null) {
      // If a call to getHRegionConnection, return this implementation.
      Mockito.when(connection.getAdmin(Mockito.any(ServerName.class))).

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    byte []splitRow = Bytes.toBytes("lll");
    byte []lastRow = Bytes.toBytes("zzz");
    HConnection con = HConnectionManager
        .getConnection(TEST_UTIL.getConfiguration());
    // this will also cache the region
    byte[] regionName = con.locateRegion(tableName, splitRow).getRegionInfo()
        .getRegionName();
    HRegion region = server.getRegion(regionName);
    SplitTransaction split = new SplitTransaction(region, splitRow);
    split.useZKForAssignment = ConfigUtil.useZKForAssignment(conf);
    split.prepare();

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  }


  private void deleteMetaRegion(Configuration conf, boolean unassign, boolean hdfs,
      boolean regionInfoOnly) throws IOException, InterruptedException {
    HConnection connection = HConnectionManager.getConnection(conf);
    HRegionLocation metaLocation = connection.locateRegion(TableName.META_TABLE_NAME,
        HConstants.EMPTY_START_ROW);
    ServerName hsa = metaLocation.getServerName();
    HRegionInfo hri = metaLocation.getRegionInfo();
    if (unassign) {
      LOG.info("Undeploying meta region " + hri + " from server " + hsa);

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    byte []splitRow = Bytes.toBytes("lll");
    byte []lastRow = Bytes.toBytes("zzz");
    HConnection con = HConnectionManager
        .getConnection(TEST_UTIL.getConfiguration());
    // this will also cache the region
    byte[] regionName = con.locateRegion(tableName, splitRow).getRegionInfo()
        .getRegionName();
    HRegion region = server.getRegion(regionName);
    SplitTransaction split = new SplitTransaction(region, splitRow);
    split.useZKForAssignment = ConfigUtil.useZKForAssignment(conf);
    split.prepare();

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  }


  @Override
  public ServerName getServerHoldingRegion(byte[] regionName) throws IOException {
    HConnection connection = admin.getConnection();
    HRegionLocation regionLoc = connection.locateRegion(regionName);
    if (regionLoc == null) {
      LOG.warn("Cannot find region server holding region " + Bytes.toString(regionName)
          + " for table " + HRegionInfo.getTableName(regionName) + ", start key [" +
          Bytes.toString(HRegionInfo.getStartKey(regionName)) + "]");
      return null;

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    byte []splitRow = Bytes.toBytes("lll");
    byte []lastRow = Bytes.toBytes("zzz");
    HConnection con = HConnectionManager
        .getConnection(TEST_UTIL.getConfiguration());
    // this will also cache the region
    byte[] regionName = con.locateRegion(tableName, splitRow).getRegionInfo()
        .getRegionName();
    HRegion region = server.getRegion(regionName);
    SplitTransaction split = new SplitTransaction(region, splitRow);
    split.prepare();

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  }


  private void deleteMetaRegion(Configuration conf, boolean unassign, boolean hdfs,
      boolean regionInfoOnly) throws IOException, InterruptedException {
    HConnection connection = HConnectionManager.getConnection(conf);
    HRegionLocation metaLocation = connection.locateRegion(TableName.META_TABLE_NAME,
        HConstants.EMPTY_START_ROW);
    ServerName hsa = metaLocation.getServerName();
    HRegionInfo hri = metaLocation.getRegionInfo();
    if (unassign) {
      LOG.info("Undeploying meta region " + hri + " from server " + hsa);

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    RegionReplicaReplicationEndpoint.RegionReplicaSinkWriter sinkWriter =
        new RegionReplicaReplicationEndpoint.RegionReplicaSinkWriter(sink,
          (ClusterConnection) connection,
          Executors.newSingleThreadExecutor(), 1000);


    HRegionLocation hrl = connection.locateRegion(toBeDisabledTable, HConstants.EMPTY_BYTE_ARRAY);
    byte[] encodedRegionName = hrl.getRegionInfo().getEncodedNameAsBytes();


    HLog.Entry entry = new HLog.Entry(
      new HLogKey(encodedRegionName, toBeDisabledTable, 1),
      new WALEdit());

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    byte []splitRow = Bytes.toBytes("lll");
    byte []lastRow = Bytes.toBytes("zzz");
    HConnection con = HConnectionManager
        .getConnection(TEST_UTIL.getConfiguration());
    // this will also cache the region
    byte[] regionName = con.locateRegion(tableName, splitRow).getRegionInfo()
        .getRegionName();
    HRegion region = server.getRegion(regionName);
    SplitTransaction split = new SplitTransaction(region, splitRow);
    split.prepare();

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  }


  private void deleteMetaRegion(Configuration conf, boolean unassign, boolean hdfs,
      boolean regionInfoOnly) throws IOException, InterruptedException {
    HConnection connection = HConnectionManager.getConnection(conf);
    HRegionLocation metaLocation = connection.locateRegion(TableName.META_TABLE_NAME,
        HConstants.EMPTY_START_ROW);
    ServerName hsa = metaLocation.getServerName();
    HRegionInfo hri = metaLocation.getRegionInfo();
    if (unassign) {
      LOG.info("Undeploying meta region " + hri + " from server " + hsa);

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