Examples of org.apache.hadoop.zebra.io.TableScanner.advance()

Class org.apache.hadoop.zebra.io.TableScanner

Examples of org.apache.hadoop.zebra.io.TableScanner.advance()

org.apache.hadoop.zebra.io.TableScanner.advance()
Advance cursor to the next Row. @return true if the cursor is moved. It will return true when the scannermoves the cursor from the last row to the end position. @throws IOException

    scanner.getValue(RowValue);
    System.out.println("rowvalue size:"+RowValue.size());
    System.out.println("read a : " + RowValue.get(0).toString());
    System.out.println("read string: " + RowValue.get(1).toString());


    scanner.advance();
    scanner.getValue(RowValue);
    System.out.println("read float in 2nd row: "+ RowValue.get(1).toString());
    System.out.println("done insert table");


    reader.close();

View Full Code Here

    scanner.getValue(RowValue);
    System.out.println("rowvalue size:"+RowValue.size());
    System.out.println("read a : " + RowValue.get(7).toString());
    System.out.println("read string: " + RowValue.get(6).toString());


    scanner.advance();
    scanner.getValue(RowValue);
    System.out.println("read float in 2nd row: "+ RowValue.get(6).toString());
    System.out.println("done insert table");

View Full Code Here

    scanner.getValue(RowValue);
    System.out.println("read 1:" + RowValue.toString());
    // read 1:(1,1001L)
    Assert.assertEquals(1, RowValue.get(0));


    scanner.advance();
    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(2, RowValue.get(0));
    reader.close();

View Full Code Here

    System.out.println("read 2:" + RowValue.toString());
    // read 2:(r3 row1 byte array,1.3)
    Assert.assertEquals("r3 row1 byte array", RowValue.get(0).toString());
    Assert.assertEquals(1.3, RowValue.get(1));


    scanner.advance();
    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals("r3 row2 byte array", RowValue.get(0).toString());
    Assert.assertEquals(2.3, RowValue.get(1));

View Full Code Here

    scanner.getValue(RowValue);
    System.out.println("rowvalue size:"+RowValue.size());
    System.out.println("read a : " + RowValue.get(0).toString());
    System.out.println("read string: " + RowValue.get(1).toString());
  
    scanner.advance();
    scanner.getValue(RowValue);
    System.out.println("read float in 2nd row: "+ RowValue.get(1).toString());
    System.out.println("done insert table");
  
    reader.close();

View Full Code Here

    scanner.getValue(RowValue);
    System.out.println("rowvalue size:"+RowValue.size());
    System.out.println("read a : " + RowValue.get(7).toString());
    System.out.println("read string: " + RowValue.get(6).toString());
   
    scanner.advance();
    scanner.getValue(RowValue);
    System.out.println("read float in 2nd row: "+ RowValue.get(6).toString());
    System.out.println("done insert table");

View Full Code Here

  long countRows(Path tablePath) throws IOException, ParseException {
    BasicTable.Reader reader = new BasicTable.Reader(tablePath, conf);
    //reader.setProjection("");
    long totalRows = 0;
    TableScanner scanner = reader.getScanner(null, true);
    for (; !scanner.atEnd(); scanner.advance()) {
      ++totalRows;
    }
    scanner.close();
    return totalRows;
  }

View Full Code Here

    reader.setProjection("count");
    TableScanner scanner = reader.getScanner(null, true);
    Tuple tuple = TypesUtils.createTuple(Projection.toSchema(scanner
        .getProjection()));
    BytesWritable key = new BytesWritable();
    for (; !scanner.atEnd(); scanner.advance()) {
      scanner.getKey(key);
      scanner.getValue(tuple);
      int count = 0;
      try {
        count = (Integer) tuple.get(0);

View Full Code Here

    TableScanner scanner = reader.getScanner(null, true);
    BytesWritable key = new BytesWritable();
    Schema schema = Projection.toSchema(scanner.getProjection());
    int idxCount = schema.getColumnIndex("count");
    Tuple value = TypesUtils.createTuple(schema);
    for (; !scanner.atEnd(); scanner.advance()) {
      scanner.getKey(key);
      scanner.getValue(value);
      try {
        String word = new String(key.getBytes(), 0, key.getLength());
        int count = (Integer) value.get(idxCount);

View Full Code Here

    Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
    scanner.getValue(RowValue);
    System.out.println("read1 : " + RowValue.toString());
    Assert.assertEquals("{key51=key511}", RowValue.get(0).toString());


    scanner.advance();
    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    System.out.println(RowValue.get(0).toString());
    Assert.assertEquals("{key51=key512}", RowValue.get(0).toString());

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.