[PHOENIX-3865] IS NULL does not return correct results when first column family not filtered against

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.11.0
• Assignee: James R. Taylor
• Reporter: Lars Hofhansl
• Created: 18/May/17 05:52
• Updated: 26/May/17 08:48
• Resolved: 26/May/17 07:52

Description

I'm using poor a poor man's method for sampling. In the following table, I write a non-null value to COLB with a probability of 0.001.

create table test (mykey integer not null primary key, A.COLA integer, B.COLB integer) IMMUTABLE_ROWS=true, STORE_NULL=false, IMMUTABLE_STORAGE_SCHEME = ONE_CELL_PER_COLUMN, DISABLE_WAL=true

Then:

0: jdbc:phoenix:localhost> select count(*) from test;
+-----------+
| COUNT(1)  |
+-----------+
| 10000000  |
+-----------+
1 row selected (8.95 seconds)
0: jdbc:phoenix:localhost> select count(*) from test where B.COLB is not null;
+-----------+
| COUNT(1)  |
+-----------+
| 10054     |
+-----------+
1 row selected (0.023 seconds)
0: jdbc:phoenix:localhost> select count(*) from test where B.COLB is null;
+-----------+
| COUNT(1)  |
+-----------+
| 0         |
+-----------+
1 row selected (0.022 seconds)

Last statement should have returned 10000000-10054 = 9989946 rows.