Package org.apache.hadoop.hbase.filter

Examples of org.apache.hadoop.hbase.filter.PrefixFilter

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  private InternalScanner buildScanner(String keyPrefix, String value, HRegion r)
  throws IOException {
    // Defaults FilterList.Operator.MUST_PASS_ALL.
    FilterList allFilters = new FilterList();
    allFilters.addFilter(new PrefixFilter(Bytes.toBytes(keyPrefix)));
    // Only return rows where this column value exists in the row.
    SingleColumnValueFilter filter =
      new SingleColumnValueFilter(Bytes.toBytes("trans-tags"),
        Bytes.toBytes("qual2"), CompareOp.EQUAL, Bytes.toBytes(value));
    filter.setFilterIfMissing(true);
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  public void testPrefixFilter() throws Exception {
    // Grab rows from group one (half of total)
    long expectedRows = numRows / 2;
    long expectedKeys = colsPerRow;
    Scan s = new Scan();
    s.setFilter(new PrefixFilter(Bytes.toBytes("testRowOne")));
    verifyScan(s, expectedRows, expectedKeys);
  }
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    job.getConfiguration().set("mapreduce.framework.name", "yarn");
    job.waitForCompletion(false);
    assertTrue(job.isSuccessful());

    // get the count of the source table for that time range
    PrefixFilter filter = new PrefixFilter(ROW1);
    int count = getCount(exportTable, filter);

    Assert.assertEquals("Unexpected row count between export and import tables", count,
      getCount(importTable, null));
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    arr.add("universe");
    obj = doType(conf,  arr, ArrayList.class);
    assertTrue(obj instanceof ArrayList);
    Assert.assertArrayEquals(list.toArray(), ((ArrayList)obj).toArray() );
    // Check that filters can be serialized
    obj = doType(conf, new PrefixFilter(HConstants.EMPTY_BYTE_ARRAY),
      PrefixFilter.class);
    assertTrue(obj instanceof PrefixFilter);
  }
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  private ResultScanner buildScanner(String keyPrefix, String value, HTable ht)
      throws IOException {
    // OurFilterList allFilters = new OurFilterList();
    FilterList allFilters = new FilterList(/* FilterList.Operator.MUST_PASS_ALL */);
    allFilters.addFilter(new PrefixFilter(Bytes.toBytes(keyPrefix)));
    SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes
        .toBytes("trans-tags"), Bytes.toBytes("qual2"), CompareOp.EQUAL, Bytes
        .toBytes(value));
    filter.setFilterIfMissing(true);
    allFilters.addFilter(filter);
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  private ResultScanner buildScanner(String keyPrefix, String value, HTable ht)
      throws IOException {
    // OurFilterList allFilters = new OurFilterList();
    FilterList allFilters = new FilterList(/* FilterList.Operator.MUST_PASS_ALL */);
    allFilters.addFilter(new PrefixFilter(Bytes.toBytes(keyPrefix)));
    SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes
        .toBytes("trans-tags"), Bytes.toBytes("qual2"), CompareOp.EQUAL, Bytes
        .toBytes(value));
    filter.setFilterIfMissing(true);
    allFilters.addFilter(filter);
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  public void testMaxWithFilter() throws Throwable {
    BigDecimal max = BigDecimal.ZERO;
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    scan.setFilter(f);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    max = aClient.max(TEST_TABLE, ci, scan);
    assertEquals(null, max);
  }
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  @Test
  public void testMinWithFilter() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    scan.setFilter(f);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    BigDecimal min = null;
    min = aClient.min(TEST_TABLE, ci, scan);
    assertEquals(null, min);
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  }

  @Test
  public void testSumWithFilter() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    scan.setFilter(f);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    BigDecimal sum = null;
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  @Test
  public void testAvgWithFilter() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    scan.setFilter(f);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    Double avg = null;
    avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(Double.NaN, avg, 0);
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