Example usage for org.apache.hadoop.io BytesWritable compareTo

Introduction

In this page you can find the example usage for org.apache.hadoop.io BytesWritable compareTo.

Prototype

@Override
public int compareTo(BinaryComparable other) 

Source Link

Document

Compare bytes from {#getBytes()}.

Usage

From source file:com.gotometrics.orderly.TestFixedBytesWritableRowKey.java

License:Apache License

@Override
public int compareTo(Object o1, Object o2) {
    if (o1 == null || o2 == null)
        return (o1 != null ? 1 : 0) - (o2 != null ? 1 : 0);

    BytesWritable b1 = ((BytesWritable) o1);
    BytesWritable b2 = ((BytesWritable) o2);

    final int compareTo = b1.compareTo(b2);

    return compareTo < 0 ? -1 : compareTo > 0 ? 1 : 0;
}

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From source file:org.apache.accumulo.server.tabletserver.log.MultiReaderTest.java

License:Apache License

@Test
public void testMultiReader() throws IOException {
    Path manyMaps = new Path("file://" + root.getRoot().getAbsolutePath() + "/manyMaps");
    MultiReader reader = new MultiReader(fs, manyMaps);
    IntWritable key = new IntWritable();
    BytesWritable value = new BytesWritable();

    for (int i = 0; i < 1000; i++) {
        if (i == 10)
            continue;
        assertTrue(reader.next(key, value));
        assertEquals(i, key.get());/* ww w . j a  v  a  2s.c o m*/
    }
    assertEquals(value.compareTo(new BytesWritable("someValue".getBytes())), 0);
    assertFalse(reader.next(key, value));

    key.set(500);
    assertTrue(reader.seek(key));
    scan(reader, 500);
    key.set(10);
    assertFalse(reader.seek(key));
    scan(reader, 10);
    key.set(1000);
    assertFalse(reader.seek(key));
    assertFalse(reader.next(key, value));
    key.set(-1);
    assertFalse(reader.seek(key));
    key.set(0);
    assertTrue(reader.next(key, value));
    assertEquals(0, key.get());
    reader.close();

    fs.deleteRecursively(new Path(manyMaps, "even"));
    reader = new MultiReader(fs, manyMaps);
    key.set(501);
    assertTrue(reader.seek(key));
    scanOdd(reader, 501);
    key.set(1000);
    assertFalse(reader.seek(key));
    assertFalse(reader.next(key, value));
    key.set(-1);
    assertFalse(reader.seek(key));
    key.set(1);
    assertTrue(reader.next(key, value));
    assertEquals(1, key.get());
    reader.close();

}

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From source file:org.apache.accumulo.tserver.log.RecoveryLogsReaderTest.java

License:Apache License

@Test
public void testMultiReader() throws IOException {
    Path manyMaps = new Path("file://" + root.getRoot().getAbsolutePath() + "/manyMaps");
    RecoveryLogReader reader = new RecoveryLogReader(fs, manyMaps);
    IntWritable key = new IntWritable();
    BytesWritable value = new BytesWritable();

    for (int i = 0; i < 1000; i++) {
        if (i == 10)
            continue;
        assertTrue(reader.next(key, value));
        assertEquals(i, key.get());//from   www  . ja v a  2s  .c om
    }
    assertEquals(value.compareTo(new BytesWritable("someValue".getBytes())), 0);
    assertFalse(reader.next(key, value));

    key.set(500);
    assertTrue(reader.seek(key));
    scan(reader, 500);
    key.set(10);
    assertFalse(reader.seek(key));
    scan(reader, 10);
    key.set(1000);
    assertFalse(reader.seek(key));
    assertFalse(reader.next(key, value));
    key.set(-1);
    assertFalse(reader.seek(key));
    key.set(0);
    assertTrue(reader.next(key, value));
    assertEquals(0, key.get());
    reader.close();

    fs.deleteRecursively(new Path(manyMaps, "even"));
    reader = new RecoveryLogReader(fs, manyMaps);
    key.set(501);
    assertTrue(reader.seek(key));
    scanOdd(reader, 501);
    key.set(1000);
    assertFalse(reader.seek(key));
    assertFalse(reader.next(key, value));
    key.set(-1);
    assertFalse(reader.seek(key));
    key.set(1);
    assertTrue(reader.next(key, value));
    assertEquals(1, key.get());
    reader.close();

}

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