@Test
public void testReadingExistingVersion1HFile() throws IOException {
URL url = TestHFileReaderV1.class.getResource("8e8ab58dcf39412da19833fcd8f687ac");
Path existingHFilePath = new Path(url.getPath());
HFile.Reader reader = HFile.createReader(fs, existingHFilePath, new CacheConfig(conf));
reader.loadFileInfo();
FixedFileTrailer trailer = reader.getTrailer();
assertEquals(N, reader.getEntries());
assertEquals(N, trailer.getEntryCount());
assertEquals(1, trailer.getMajorVersion());
assertEquals(Compression.Algorithm.GZ, trailer.getCompressionCodec());
for (boolean pread : new boolean[] {false, true}) {
int totalDataSize = 0;
int n = 0;
HFileScanner scanner = reader.getScanner(false, pread);
assertTrue(scanner.seekTo());
do {
totalDataSize +=
scanner.getKey().limit() + scanner.getValue().limit() + Bytes.SIZEOF_INT * 2;
++n;
} while (scanner.next());
// Add magic record sizes, one per data block.
totalDataSize += 8 * trailer.getDataIndexCount();
assertEquals(N, n);
assertEquals(trailer.getTotalUncompressedBytes(), totalDataSize);
}
reader.close();
}
