Examples of org.apache.hadoop.hbase.ipc.HRegionInterface.openScanner()

Class org.apache.hadoop.hbase.ipc.HRegionInterface

Examples of org.apache.hadoop.hbase.ipc.HRegionInterface.openScanner()

org.apache.hadoop.hbase.ipc.HRegionInterface.openScanner()
Opens a remote scanner with a RowFilter. @param regionName name of region to scan @param scan configured scan object @return scannerId scanner identifier used in other calls @throws IOException e

      byte [] metaRegionName = m.getRegionName();
      HRegionInterface srvr = connection.getHRegionConnection(m.getServer());
      Scan scan = new Scan(firstRowInTable);
      scan.addColumn(CATALOG_FAMILY, REGIONINFO_QUALIFIER);
      scan.addColumn(CATALOG_FAMILY, SERVER_QUALIFIER);
      long scannerid = srvr.openScanner(metaRegionName, scan);
      try {
        while (true) {
          Result data = srvr.next(scannerid);
          if (data == null || data.size() <= 0)
            break;

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      byte [] metaRegionName = m.getRegionName();
      HRegionInterface srvr = connection.getHRegionConnection(m.getServer());
      Scan scan = new Scan(firstRowInTable);
      scan.addColumn(CATALOG_FAMILY, REGIONINFO_QUALIFIER);
      scan.addColumn(CATALOG_FAMILY, SERVER_QUALIFIER);
      long scannerid = srvr.openScanner(metaRegionName, scan);
      try {
        while (true) {
          Result data = srvr.next(scannerid);
          if (data == null || data.size() <= 0)
            break;

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    for (int tries = 0; tries < numRetries; tries++) {
      long scannerId = -1L;
      try {
        Scan scan = new Scan().addColumn(HConstants.CATALOG_FAMILY,
          HConstants.REGIONINFO_QUALIFIER);
        scannerId = server.openScanner(
          firstMetaServer.getRegionInfo().getRegionName(), scan);
        // Get a batch at a time.
        Result [] values = server.next(scannerId, batchCount);
        if (values == null || values.length == 0) {
          break;

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      try {


        Scan scan = MetaReader.getScanForTableName(tableName);
        scan.addColumn(HConstants.CATALOG_FAMILY,
            HConstants.REGIONINFO_QUALIFIER);
        scannerId = server.openScanner(
          firstMetaServer.getRegionInfo().getRegionName(), scan);
        // Get a batch at a time.
        Result values = server.next(scannerId);
        if (values == null) {
          break;

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      try {


        Scan scan = MetaReader.getScanForTableName(tableName);
        scan.addColumn(HConstants.CATALOG_FAMILY,
            HConstants.REGIONINFO_QUALIFIER);
        scannerId = server.openScanner(
          firstMetaServer.getRegionInfo().getRegionName(), scan);
        // Get a batch at a time.
        Result values = server.next(scannerId);
        if (values == null) {
          break;

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    HRegionInterface metaServer =
      catalogTracker.waitForMetaServerConnectionDefault();
    Scan scan = new Scan();
    if (startrow != null) scan.setStartRow(startrow);
    scan.addFamily(HConstants.CATALOG_FAMILY);
    long scannerid = metaServer.openScanner(
        HRegionInfo.FIRST_META_REGIONINFO.getRegionName(), scan);
    try {
      Result data;
      while((data = metaServer.next(scannerid)) != null) {
        if (!data.isEmpty()) {

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    }
    HRegionInterface metaServer =
      catalogTracker.waitForMetaServerConnectionDefault();
    Scan scan = getScanForTableName(Bytes.toBytes(tableName));
    scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER);
    long scannerid = metaServer.openScanner(
        HRegionInfo.FIRST_META_REGIONINFO.getRegionName(), scan);
    try {
      Result data = metaServer.next(scannerid);
      if (data != null && data.size() > 0) {
          return true;

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      try {


        Scan scan = MetaReader.getScanForTableName(tableName);
        scan.addColumn(HConstants.CATALOG_FAMILY,
            HConstants.REGIONINFO_QUALIFIER);
        scannerId = server.openScanner(
          firstMetaServer.getRegionInfo().getRegionName(), scan);
        // Get a batch at a time.
        Result values = server.next(scannerId);
        if (values == null) {
          break;

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    List<HRegionInfo> regions = new ArrayList<HRegionInfo>();


    Scan scan = getScanForTableName(tableName);
    scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER);
    long scannerid =
      metaServer.openScanner(getCatalogRegionNameForTable(tableName), scan);
    try {
      Result data;
      while((data = metaServer.next(scannerid)) != null) {
        if (data != null && data.size() > 0) {
          HRegionInfo info = Writables.getHRegionInfo(

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    List<Pair<HRegionInfo, HServerAddress>> regions =
      new ArrayList<Pair<HRegionInfo, HServerAddress>>();
    Scan scan = getScanForTableName(tableNameBytes);
    scan.addFamily(HConstants.CATALOG_FAMILY);
    long scannerid =
      metaServer.openScanner(getCatalogRegionNameForTable(tableNameBytes), scan);
    try {
      Result data;
      while((data = metaServer.next(scannerid)) != null) {
        if (data != null && data.size() > 0) {
          Pair<HRegionInfo, HServerAddress> region = metaRowToRegionPair(data);

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