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

    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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      // printed if we FAIL.  We eventually succeed after retry so these don't
      // show.  We will know if they happened or not because we will ask
      // mockito at the end of this test to verify that openscanner was indeed
      // called the wanted number of times.
      final long scannerid = 123L;
      Mockito.when(implementation.openScanner((byte [])Mockito.any(),
          (Scan)Mockito.any())).
        thenThrow(new IOException("Server not running (1 of 3)")).
        thenThrow(new IOException("Server not running (2 of 3)")).
        thenThrow(new IOException("Server not running (3 of 3)")).
        thenReturn(scannerid);

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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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    byte [] metaRegionName = m.getRegionName();
    HRegionInterface srvr = this.connection.getHRegionConnection(m.getServer());
    byte[] firstRowInTable = Bytes.toBytes(tableName + ",,");
    Scan scan = new Scan(firstRowInTable);
    scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER);
    long scannerid = srvr.openScanner(metaRegionName, scan);
    try {
      Result data = srvr.next(scannerid);
      if (data != null && data.size() > 0) {
        HRegionInfo info = Writables.getHRegionInfo(
          data.getValue(HConstants.CATALOG_FAMILY,

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      regionServer =
        this.master.getServerConnection().getHRegionConnection(region.getServer());
      Scan s = new Scan().addFamily(HConstants.CATALOG_FAMILY);
      // Make this scan do a row at a time otherwise, data can be stale.
      s.setCaching(1);
      scannerId = regionServer.openScanner(region.getRegionName(), s);
      while (true) {
        Result values = regionServer.next(scannerId);
        if (values == null || values.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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      } else if (sn.equals(SERVERNAME_B)) {
        r = new Result(new KeyValue[0]);
      }
    }


    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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      result = new Result[2];
      result[0] = getMetaTableRowResult(REGIONINFO, SERVERNAME_A);
      result[1] = getMetaTableRowResult(REGIONINFO_2, SERVERNAME_A);
    }
    Result r = getMetaTableRowResult(REGIONINFO, SERVERNAME_A);
    Mockito.when(ri .openScanner((byte[]) Mockito.any(), (Scan) Mockito.any())).
      thenReturn(System.currentTimeMillis());
   if (enabling) {
      Mockito.when(ri.next(Mockito.anyLong(), Mockito.anyInt())).thenReturn(result, result, result,
          (Result[]) null);
      // If a get, return the above result too for REGIONINFO_2

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    // created. Throw already-exists exception.
    MetaRegion m = regionManager.getFirstMetaRegionForRegion(newRegion);
        
    byte [] metaRegionName = m.getRegionName();
    HRegionInterface srvr = connection.getHRegionConnection(m.getServer());
    long scannerid = srvr.openScanner(metaRegionName, COL_REGIONINFO_ARRAY,
      tableName, LATEST_TIMESTAMP, null);
    try {
      RowResult data = srvr.next(scannerid);
      if (data != null && data.size() > 0) {
        HRegionInfo info = Writables.getHRegionInfo(data.get(COL_REGIONINFO));

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    HRegionInfo info = new HRegionInfo();
    for (int tries = 0; tries < numRetries; tries++) {
      long scannerId = -1L;
      try {
        scannerId =
          server.openScanner(firstMetaServer.getRegionInfo().getRegionName(),
            HConstants.COL_REGIONINFO_ARRAY, tableName,
            HConstants.LATEST_TIMESTAMP, null);
        RowResult values = server.next(scannerId);
        if (values == null || values.size() == 0) {
          break;

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