/** Assert CellUtil makes Cell toStrings same way we do KeyValue toStrings. */
@Test
public void testToString() {
byte[] row = Bytes.toBytes("row");
long ts = 123l;
// Make a KeyValue and a Cell and see if same toString result.
KeyValue kv =
new KeyValue(
row,
HConstants.EMPTY_BYTE_ARRAY,
HConstants.EMPTY_BYTE_ARRAY,
ts,
KeyValue.Type.Minimum,
HConstants.EMPTY_BYTE_ARRAY);
Cell cell =
CellUtil.createCell(
row,
HConstants.EMPTY_BYTE_ARRAY,
HConstants.EMPTY_BYTE_ARRAY,
ts,
KeyValue.Type.Minimum.getCode(),
HConstants.EMPTY_BYTE_ARRAY);
String cellToString = CellUtil.getCellKeyAsString(cell);
assertEquals(kv.toString(), cellToString);
// Do another w/ non-null family.
byte[] f = new byte[] {'f'};
byte[] q = new byte[] {'q'};
kv = new KeyValue(row, f, q, ts, KeyValue.Type.Minimum, HConstants.EMPTY_BYTE_ARRAY);
cell =
CellUtil.createCell(
row, f, q, ts, KeyValue.Type.Minimum.getCode(), HConstants.EMPTY_BYTE_ARRAY);
cellToString = CellUtil.getCellKeyAsString(cell);
assertEquals(kv.toString(), cellToString);
}
static int insertData(Configuration conf, TableName tableName, String column, double prob)
throws IOException {
Random rng = new Random();
int count = 0;
HTable table = new HTable(conf, tableName);
byte[] k = new byte[3];
byte[][] famAndQf = KeyValue.parseColumn(Bytes.toBytes(column));
for (byte b1 = 'a'; b1 < 'z'; b1++) {
for (byte b2 = 'a'; b2 < 'z'; b2++) {
for (byte b3 = 'a'; b3 < 'z'; b3++) {
if (rng.nextDouble() < prob) {
k[0] = b1;
k[1] = b2;
k[2] = b3;
Put put = new Put(k);
put.setDurability(Durability.SKIP_WAL);
put.add(famAndQf[0], famAndQf[1], k);
table.put(put);
count++;
}
}
}
}
table.flushCommits();
table.close();
return count;
}
@Test
public void testFindCommonPrefixInFlatKey() {
// The whole key matching case
KeyValue kv1 = new KeyValue("r1".getBytes(), "f1".getBytes(), "q1".getBytes(), null);
Assert.assertEquals(
kv1.getKeyLength(), CellUtil.findCommonPrefixInFlatKey(kv1, kv1, true, true));
Assert.assertEquals(
kv1.getKeyLength(), CellUtil.findCommonPrefixInFlatKey(kv1, kv1, false, true));
Assert.assertEquals(
kv1.getKeyLength() - KeyValue.TIMESTAMP_TYPE_SIZE,
CellUtil.findCommonPrefixInFlatKey(kv1, kv1, true, false));
// The rk length itself mismatch
KeyValue kv2 = new KeyValue("r12".getBytes(), "f1".getBytes(), "q1".getBytes(), null);
Assert.assertEquals(1, CellUtil.findCommonPrefixInFlatKey(kv1, kv2, true, true));
// part of rk is same
KeyValue kv3 = new KeyValue("r14".getBytes(), "f1".getBytes(), "q1".getBytes(), null);
Assert.assertEquals(
KeyValue.ROW_LENGTH_SIZE + "r1".getBytes().length,
CellUtil.findCommonPrefixInFlatKey(kv2, kv3, true, true));
// entire rk is same but different cf name
KeyValue kv4 = new KeyValue("r14".getBytes(), "f2".getBytes(), "q1".getBytes(), null);
Assert.assertEquals(
KeyValue.ROW_LENGTH_SIZE
+ kv3.getRowLength()
+ KeyValue.FAMILY_LENGTH_SIZE
+ "f".getBytes().length,
CellUtil.findCommonPrefixInFlatKey(kv3, kv4, false, true));
// rk and family are same and part of qualifier
KeyValue kv5 = new KeyValue("r14".getBytes(), "f2".getBytes(), "q123".getBytes(), null);
Assert.assertEquals(
KeyValue.ROW_LENGTH_SIZE
+ kv3.getRowLength()
+ KeyValue.FAMILY_LENGTH_SIZE
+ kv4.getFamilyLength()
+ kv4.getQualifierLength(),
CellUtil.findCommonPrefixInFlatKey(kv4, kv5, true, true));
// rk, cf and q are same. ts differs
KeyValue kv6 = new KeyValue("rk".getBytes(), 1234L);
KeyValue kv7 = new KeyValue("rk".getBytes(), 1235L);
// only last byte out of 8 ts bytes in ts part differs
Assert.assertEquals(
KeyValue.ROW_LENGTH_SIZE
+ kv6.getRowLength()
+ KeyValue.FAMILY_LENGTH_SIZE
+ kv6.getFamilyLength()
+ kv6.getQualifierLength()
+ 7,
CellUtil.findCommonPrefixInFlatKey(kv6, kv7, true, true));
// rk, cf, q and ts are same. Only type differs
KeyValue kv8 = new KeyValue("rk".getBytes(), 1234L, Type.Delete);
Assert.assertEquals(
KeyValue.ROW_LENGTH_SIZE
+ kv6.getRowLength()
+ KeyValue.FAMILY_LENGTH_SIZE
+ kv6.getFamilyLength()
+ kv6.getQualifierLength()
+ KeyValue.TIMESTAMP_SIZE,
CellUtil.findCommonPrefixInFlatKey(kv6, kv8, true, true));
// With out TS_TYPE check
Assert.assertEquals(
KeyValue.ROW_LENGTH_SIZE
+ kv6.getRowLength()
+ KeyValue.FAMILY_LENGTH_SIZE
+ kv6.getFamilyLength()
+ kv6.getQualifierLength(),
CellUtil.findCommonPrefixInFlatKey(kv6, kv8, true, false));
}