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

Example 96 with ResultScanner

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

the class ThriftHBaseServiceHandler method getScannerResults.

@Override
public List<TResult> getScannerResults(ByteBuffer table, TScan scan, int numRows) throws TIOError, TException {
    Table htable = getTable(table);
    List<TResult> results = null;
    ResultScanner scanner = null;
    try {
        scanner = htable.getScanner(scanFromThrift(scan));
        results = resultsFromHBase(scanner.next(numRows));
    } catch (IOException e) {
        throw getTIOError(e);
    } finally {
        if (scanner != null) {
            scanner.close();
        }
        closeTable(htable);
    }
    return results;
}

Example 97 with ResultScanner

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

the class ThriftHBaseServiceHandler method getScannerRows.

@Override
public List<TResult> getScannerRows(int scannerId, int numRows) throws TIOError, TIllegalArgument, TException {
    ResultScanner scanner = getScanner(scannerId);
    if (scanner == null) {
        TIllegalArgument ex = new TIllegalArgument();
        ex.setMessage("Invalid scanner Id");
        throw ex;
    }
    try {
        connectionCache.updateConnectionAccessTime();
        return resultsFromHBase(scanner.next(numRows));
    } catch (IOException e) {
        throw getTIOError(e);
    }
}

Example 98 with ResultScanner

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

the class TestHRegionOnCluster method putDataAndVerify.

private void putDataAndVerify(Table table, String row, byte[] family, String value, int verifyNum) throws IOException {
    System.out.println("=========Putting data :" + row);
    Put put = new Put(Bytes.toBytes(row));
    put.addColumn(family, Bytes.toBytes("q1"), Bytes.toBytes(value));
    table.put(put);
    ResultScanner resultScanner = table.getScanner(new Scan());
    List<Result> results = new ArrayList<>();
    while (true) {
        Result r = resultScanner.next();
        if (r == null)
            break;
        results.add(r);
    }
    resultScanner.close();
    if (results.size() != verifyNum) {
        System.out.println(results);
    }
    assertEquals(verifyNum, results.size());
}

Example 99 with ResultScanner

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

the class TestMobStoreScanner method testGetReferences.

private void testGetReferences(boolean reversed) throws Exception {
    TableName tn = TableName.valueOf("testGetReferences" + reversed);
    setUp(defaultThreshold, tn);
    long ts1 = System.currentTimeMillis();
    long ts2 = ts1 + 1;
    long ts3 = ts1 + 2;
    byte[] value = generateMobValue((int) defaultThreshold + 1);
    ;
    Put put1 = new Put(row1);
    put1.addColumn(family, qf1, ts3, value);
    put1.addColumn(family, qf2, ts2, value);
    put1.addColumn(family, qf3, ts1, value);
    table.put(put1);
    admin.flush(tn);
    Scan scan = new Scan();
    setScan(scan, reversed, true);
    ResultScanner results = table.getScanner(scan);
    int count = 0;
    for (Result res : results) {
        List<Cell> cells = res.listCells();
        for (Cell cell : cells) {
            // Verify the value
            assertIsMobReference(cell, row1, family, value, tn);
            count++;
        }
    }
    results.close();
    Assert.assertEquals(3, count);
}

Example 100 with ResultScanner

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

the class TestJoinedScanners method runScanner.

private void runScanner(Table table, boolean slow) throws Exception {
    long time = System.nanoTime();
    Scan scan = new Scan();
    scan.addColumn(cf_essential, col_name);
    scan.addColumn(cf_joined, col_name);
    SingleColumnValueFilter filter = new SingleColumnValueFilter(cf_essential, col_name, CompareFilter.CompareOp.EQUAL, flag_yes);
    filter.setFilterIfMissing(true);
    scan.setFilter(filter);
    scan.setLoadColumnFamiliesOnDemand(!slow);
    ResultScanner result_scanner = table.getScanner(scan);
    Result res;
    long rows_count = 0;
    while ((res = result_scanner.next()) != null) {
        rows_count++;
    }
    double timeSec = (System.nanoTime() - time) / 1000000000.0;
    result_scanner.close();
    LOG.info((slow ? "Slow" : "Joined") + " scanner finished in " + Double.toString(timeSec) + " seconds, got " + Long.toString(rows_count / 2) + " rows");
}