下面列出了怎么用org.apache.hadoop.io.file.tfile.TFile.Reader.Location的API类实例代码及写法,或者点击链接到github查看源代码。
public void testLocate() throws IOException {
if (skip)
return;
writeRecords(3 * records1stBlock);
Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
Scanner scanner = reader.createScanner();
Location loc2 =
locate(scanner, composeSortedKey(KEY, 3 * records1stBlock, 2)
.getBytes());
Location locLastIn1stBlock =
locate(scanner, composeSortedKey(KEY, 3 * records1stBlock,
records1stBlock - 1).getBytes());
Location locFirstIn2ndBlock =
locate(scanner, composeSortedKey(KEY, 3 * records1stBlock,
records1stBlock).getBytes());
Location locX = locate(scanner, "keyX".getBytes());
Assert.assertEquals(scanner.endLocation, locX);
scanner.close();
reader.close();
}
@Test
public void testLocate() throws IOException {
if (skip)
return;
writeRecords(3 * records1stBlock);
Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
Scanner scanner = reader.createScanner();
locate(scanner, composeSortedKey(KEY, 2).getBytes());
locate(scanner, composeSortedKey(KEY, records1stBlock - 1).getBytes());
locate(scanner, composeSortedKey(KEY, records1stBlock).getBytes());
Location locX = locate(scanner, "keyX".getBytes());
Assert.assertEquals(scanner.endLocation, locX);
scanner.close();
reader.close();
}
@Test
public void testLocate() throws IOException {
if (skip)
return;
writeRecords(3 * records1stBlock);
Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
Scanner scanner = reader.createScanner();
locate(scanner, composeSortedKey(KEY, 2).getBytes());
locate(scanner, composeSortedKey(KEY, records1stBlock - 1).getBytes());
locate(scanner, composeSortedKey(KEY, records1stBlock).getBytes());
Location locX = locate(scanner, "keyX".getBytes());
Assert.assertEquals(scanner.endLocation, locX);
scanner.close();
reader.close();
}
@Test
public void testLocate() throws IOException {
if (skip)
return;
writeRecords(3 * records1stBlock);
Reader reader = new Reader(fs.open(path), fs.getFileStatus(path).getLen(), conf);
Scanner scanner = reader.createScanner();
locate(scanner, composeSortedKey(KEY, 2).getBytes());
locate(scanner, composeSortedKey(KEY, records1stBlock - 1).getBytes());
locate(scanner, composeSortedKey(KEY, records1stBlock).getBytes());
Location locX = locate(scanner, "keyX".getBytes());
Assert.assertEquals(scanner.endLocation, locX);
scanner.close();
reader.close();
}
Location locate(Scanner scanner, byte[] key) throws IOException {
if (scanner.seekTo(key) == true) {
return scanner.currentLocation;
}
return scanner.endLocation;
}
Location locate(Scanner scanner, byte[] key) throws IOException {
if (scanner.seekTo(key) == true) {
return scanner.currentLocation;
}
return scanner.endLocation;
}
Location locate(Scanner scanner, byte[] key) throws IOException {
if (scanner.seekTo(key) == true) {
return scanner.currentLocation;
}
return scanner.endLocation;
}
Location locate(Scanner scanner, byte[] key) throws IOException {
if (scanner.seekTo(key) == true) {
return scanner.currentLocation;
}
return scanner.endLocation;
}