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

      new ArrayList<Pair<HRegionInfo, HServerAddress>>();
    byte[] firstRowInTable = Bytes.toBytes(tableName + ",,");
    Scan scan = new Scan(firstRowInTable);
    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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    HRegionInterface metaServer =
      catalogTracker.waitForMetaServerConnectionDefault();
    NavigableMap<HRegionInfo, Result> hris = new TreeMap<HRegionInfo, Result>();
    Scan scan = new Scan();
    scan.addFamily(HConstants.CATALOG_FAMILY);
    long scannerid = metaServer.openScanner(
        HRegionInfo.FIRST_META_REGIONINFO.getRegionName(), scan);
    try {
      Result result;
      while((result = metaServer.next(scannerid)) != null) {
        if (result != null && result.size() > 0) {

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    for (int tries = 0; tries < (this.numRetries * this.retryLongerMultiplier); 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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    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()) visitor.visit(data);

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    HRegionInterface metaServer =
      catalogTracker.waitForMetaServerConnectionDefault();
    byte[] firstRowInTable = Bytes.toBytes(tableName + ",,");
    Scan scan = new Scan(firstRowInTable);
    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) {
        HRegionInfo info = Writables.getHRegionInfo(

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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);


        // let us wait until .META. table is updated and

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      // Need to set up a fake scan of meta for the servershutdown handler
      // Make an RS Interface implementation.  Make it so a scanner can go against it.
      HRegionInterface implementation = Mockito.mock(HRegionInterface.class);
      // Get a meta row result that has region up on SERVERNAME_A
      Result r = getMetaTableRowResult(REGIONINFO, SERVERNAME_A);
      Mockito.when(implementation.openScanner((byte [])Mockito.any(), (Scan)Mockito.any())).
        thenReturn(System.currentTimeMillis());
      // Return a good result first and then return null to indicate end of scan
      Mockito.when(implementation.next(Mockito.anyLong(), Mockito.anyInt())).
        thenReturn(new Result [] {r}, (Result [])null);

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    // rebuild its list of user regions and it will also get the HRI that goes
    // with an encoded name by doing a Get on .META.
    HRegionInterface ri = Mockito.mock(HRegionInterface.class);
    // Get a meta row result that has region up on SERVERNAME_A for REGIONINFO
    Result r = getMetaTableRowResult(REGIONINFO, SERVERNAME_A);
    Mockito.when(ri .openScanner((byte[]) Mockito.any(), (Scan) Mockito.any())).
      thenReturn(System.currentTimeMillis());
    // Return good result 'r' first and then return null to indicate end of scan
    Mockito.when(ri.next(Mockito.anyLong(), Mockito.anyInt())).
      thenReturn(new Result[] { r }, (Result[]) null);
    // If a get, return the above result too for REGIONINFO

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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);


        // let us wait until .META. table is updated and

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