Examples with Get org.apache.hadoop.hbase.client.Get used on opensource projects

Example 1 with Get

use of org.apache.hadoop.hbase.client.Get in project hive by apache.

the class HBaseReadWrite method read.

private byte[] read(String table, byte[] key, byte[] colFam, byte[] colName) throws IOException {
    HTableInterface htab = conn.getHBaseTable(table);
    Get g = new Get(key);
    g.addColumn(colFam, colName);
    Result res = htab.get(g);
    return res.getValue(colFam, colName);
}

Example 2 with Get

use of org.apache.hadoop.hbase.client.Get in project hive by apache.

the class HBaseReadWrite method read.

private Result read(String table, byte[] key, byte[] colFam, byte[][] colNames) throws IOException {
    HTableInterface htab = conn.getHBaseTable(table);
    Get g = new Get(key);
    for (byte[] colName : colNames) g.addColumn(colFam, colName);
    return htab.get(g);
}

Example 3 with Get

use of org.apache.hadoop.hbase.client.Get in project hive by apache.

the class HBaseReadWrite method multiRead.

private void multiRead(String table, byte[] colFam, byte[] colName, byte[][] keys, ByteBuffer[] resultDest) throws IOException {
    assert keys.length == resultDest.length;
    @SuppressWarnings("deprecation") HTableInterface htab = conn.getHBaseTable(table);
    List<Get> gets = new ArrayList<>(keys.length);
    for (byte[] key : keys) {
        Get g = new Get(key);
        g.addColumn(colFam, colName);
        gets.add(g);
    }
    Result[] results = htab.get(gets);
    for (int i = 0; i < results.length; ++i) {
        Result r = results[i];
        if (r.isEmpty()) {
            resultDest[i] = null;
        } else {
            Cell cell = r.getColumnLatestCell(colFam, colName);
            resultDest[i] = ByteBuffer.wrap(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());
        }
    }
}

Example 4 with Get

use of org.apache.hadoop.hbase.client.Get in project hbase by apache.

the class MetaTableAccessor method getReplicationPositionForAllPeer.

/**
   * Get replication positions for all peers in a region.
   * @param connection connection we're using
   * @param encodedRegionName region's encoded name
   * @return the map of positions for each peer
   */
public static Map<String, Long> getReplicationPositionForAllPeer(Connection connection, byte[] encodedRegionName) throws IOException {
    Get get = new Get(encodedRegionName);
    get.addFamily(HConstants.REPLICATION_POSITION_FAMILY);
    Result r = get(getMetaHTable(connection), get);
    Map<String, Long> map = new HashMap<>((int) (r.size() / 0.75 + 1));
    for (Cell c : r.listCells()) {
        map.put(Bytes.toString(c.getQualifierArray(), c.getQualifierOffset(), c.getQualifierLength()), Bytes.toLong(c.getValueArray(), c.getValueOffset(), c.getValueLength()));
    }
    return map;
}

Example 5 with Get

use of org.apache.hadoop.hbase.client.Get in project hbase by apache.

the class MetaTableAccessor method getSerialReplicationDaughterRegion.

/**
   * Get daughter region(s) for a region, only used in serial replication.
   * @param connection connection we're using
   * @param encodedName region's encoded name
   * @throws IOException
   */
public static String getSerialReplicationDaughterRegion(Connection connection, byte[] encodedName) throws IOException {
    Get get = new Get(encodedName);
    get.addColumn(HConstants.REPLICATION_META_FAMILY, daughterNameCq);
    Result result = get(getMetaHTable(connection), get);
    if (!result.isEmpty()) {
        Cell c = result.rawCells()[0];
        return Bytes.toString(c.getValueArray(), c.getValueOffset(), c.getValueLength());
    }
    return null;
}