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

Example 91 with ResultScanner

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

the class TestReplicationSmallTests method testHBase14905.

@Test(timeout = 300000)
public // VerifyReplication should honor versions option
void testHBase14905() throws Exception {
    // normal Batch tests
    byte[] qualifierName = Bytes.toBytes("f1");
    Put put = new Put(Bytes.toBytes("r1"));
    put.addColumn(famName, qualifierName, Bytes.toBytes("v1002"));
    htable1.put(put);
    put.addColumn(famName, qualifierName, Bytes.toBytes("v1001"));
    htable1.put(put);
    put.addColumn(famName, qualifierName, Bytes.toBytes("v1112"));
    htable1.put(put);
    Scan scan = new Scan();
    scan.setMaxVersions(100);
    ResultScanner scanner1 = htable1.getScanner(scan);
    Result[] res1 = scanner1.next(1);
    scanner1.close();
    assertEquals(1, res1.length);
    assertEquals(3, res1[0].getColumnCells(famName, qualifierName).size());
    for (int i = 0; i < NB_RETRIES; i++) {
        scan = new Scan();
        scan.setMaxVersions(100);
        scanner1 = htable2.getScanner(scan);
        res1 = scanner1.next(1);
        scanner1.close();
        if (res1.length != 1) {
            LOG.info("Only got " + res1.length + " rows");
            Thread.sleep(SLEEP_TIME);
        } else {
            int cellNumber = res1[0].getColumnCells(famName, Bytes.toBytes("f1")).size();
            if (cellNumber != 3) {
                LOG.info("Only got " + cellNumber + " cells");
                Thread.sleep(SLEEP_TIME);
            } else {
                break;
            }
        }
        if (i == NB_RETRIES - 1) {
            fail("Waited too much time for normal batch replication");
        }
    }
    put.addColumn(famName, qualifierName, Bytes.toBytes("v1111"));
    htable2.put(put);
    put.addColumn(famName, qualifierName, Bytes.toBytes("v1112"));
    htable2.put(put);
    scan = new Scan();
    scan.setMaxVersions(100);
    scanner1 = htable2.getScanner(scan);
    res1 = scanner1.next(NB_ROWS_IN_BATCH);
    scanner1.close();
    assertEquals(1, res1.length);
    assertEquals(5, res1[0].getColumnCells(famName, qualifierName).size());
    String[] args = new String[] { "--versions=100", PEER_ID, tableName.getNameAsString() };
    runVerifyReplication(args, 0, 1);
}

Example 92 with ResultScanner

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

the class OfflineMetaRebuildTestCore method tableRowCount.

/**
   * Returns the number of rows in a given table. HBase must be up and the table
   * should be present (will wait for timeout for a while otherwise)
   *
   * @return # of rows in the specified table
   */
protected int tableRowCount(Configuration conf, TableName table) throws IOException {
    Table t = TEST_UTIL.getConnection().getTable(table);
    Scan st = new Scan();
    ResultScanner rst = t.getScanner(st);
    int count = 0;
    for (@SuppressWarnings("unused") Result rt : rst) {
        count++;
    }
    t.close();
    return count;
}

Example 93 with ResultScanner

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

the class TestResultSizeEstimation method testResultSizeEstimation.

@Test
public void testResultSizeEstimation() throws Exception {
    byte[] ROW1 = Bytes.toBytes("testRow1");
    byte[] ROW2 = Bytes.toBytes("testRow2");
    byte[] FAMILY = Bytes.toBytes("testFamily");
    byte[] QUALIFIER = Bytes.toBytes("testQualifier");
    byte[] VALUE = Bytes.toBytes("testValue");
    final TableName tableName = TableName.valueOf(name.getMethodName());
    byte[][] FAMILIES = new byte[][] { FAMILY };
    Table table = TEST_UTIL.createTable(tableName, FAMILIES);
    Put p = new Put(ROW1);
    p.add(new KeyValue(ROW1, FAMILY, QUALIFIER, Long.MAX_VALUE, VALUE));
    table.put(p);
    p = new Put(ROW2);
    p.add(new KeyValue(ROW2, FAMILY, QUALIFIER, Long.MAX_VALUE, VALUE));
    table.put(p);
    Scan s = new Scan();
    s.setMaxResultSize(SCANNER_DATA_LIMIT);
    ResultScanner rs = table.getScanner(s);
    int count = 0;
    while (rs.next() != null) {
        count++;
    }
    assertEquals("Result size estimation did not work properly", 2, count);
    rs.close();
    table.close();
}

Example 94 with ResultScanner

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

the class TestLoadAndSwitchEncodeOnDisk method assertAllOnLine.

private void assertAllOnLine(final Table t) throws IOException {
    List<HRegionLocation> regions;
    try (RegionLocator rl = TEST_UTIL.getConnection().getRegionLocator(t.getName())) {
        regions = rl.getAllRegionLocations();
    }
    for (HRegionLocation e : regions) {
        byte[] startkey = e.getRegionInfo().getStartKey();
        Scan s = new Scan(startkey);
        ResultScanner scanner = t.getScanner(s);
        Result r = scanner.next();
        org.junit.Assert.assertTrue(r != null && r.size() > 0);
        scanner.close();
    }
}

Example 95 with ResultScanner

use of org.apache.hadoop.hbase.client.ResultScanner in project javaee7-samples by javaee-samples.

the class PersonSessionBean method getPersons.

public List<Person> getPersons() throws IOException {
    List<Person> persons = new ArrayList<>();
    try (HTableInterface table = pool.getTable(personsTable)) {
        Scan scan = new Scan();
        scan.addFamily(Bytes.toBytes(personsColumnFamily));
        try (ResultScanner resultScanner = table.getScanner(scan)) {
            for (Result result : resultScanner) {
                for (KeyValue kv : result.raw()) {
                    Person p = new Person();
                    //                    p.setTitle(Bytes.toString(kv.getQualifier()));
                    //                    p.setBody(Bytes.toString(kv.getValue()));
                    //                    p.setId(Bytes.toString(result.getRow()));
                    persons.add(person);
                }
            }
        }
    }
    return persons;
}