[jira] [Commented] (PHOENIX-3865) IS NULL does not return results when STORE_NULLS, and ONE_CELL_PER_COLUMN is set on IMMUTABLE ROWS

["Lars Hofhansl (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-3865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16023744#comment-16023744 ] 

Lars Hofhansl commented on PHOENIX-3865:
----------------------------------------

[~jamestaylor], this is the issue I mentioned today.

> IS NULL does not return results when STORE_NULLS, and ONE_CELL_PER_COLUMN is set on IMMUTABLE ROWS
> --------------------------------------------------------------------------------------------------
>
>                 Key: PHOENIX-3865
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3865
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>
> 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.
> {code}
> 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
> {code}
> Then: 
> {code}
> 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)
> {code}
> Last statement should have returned 10000000-10054 = 9989946 rows.



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