I am doing some tests of append operation (HTable.append(Append append)) and it
seems that
if cell being appended has multiple versions , all except the last one get
deleted. Is it correct behavior or I am doing something wrong in my tests?
The test is simple. I have a row with 3 CF and 3 qualifiers in each CF and 10
versions (total # KVs stored for row is 90). I test append on the row
(for each CF:Qualifier combination)
public void testAppend()
{
int index = 2;
LOG.error("Test append started. Testing "+index+" row");
byte[] row = data.get(index).get(0).getRow();
byte[] toAppend = "APPEND".getBytes();
LOG.error(" Append row: "+ new String(row));
// Get all data for the row
Get get = createGet(row, null, null, null);
get.setMaxVersions(Integer.MAX_VALUE);
Result result = tableA.get(get);
List<KeyValue> ll = result.list();
// Correct list size is 3 (total families)*3 (total columns) *10
(# versions) = 90
assertEquals( 90, ll.size() );
// Do append to All 3 * 3 = 9 cells in a row
Append append = createAppend(row, Arrays.asList(FAMILIES),
Arrays.asList(COLUMNS), toAppend);
Result r = tableA.append(append);
ll = r.list();
assertEquals( 9, ll.size() );
// Check row again
get = createGet(row, null, null, null);
get.setMaxVersions(Integer.MAX_VALUE);
result = tableA.get(get);
assertEquals (90, result.size()); // This assertion FAILS:
actual size is 9
}
Best regards,
Vladimir Rodionov
Principal Platform Engineer
Carrier IQ, www.carrieriq.com
e-mail: [email protected]
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