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Posted to commits@cassandra.apache.org by "Lex Lythius (JIRA)" <ji...@apache.org> on 2014/12/04 20:52:12 UTC
[jira] [Created] (CASSANDRA-8424) Secondary index on column not
working when using PK
Lex Lythius created CASSANDRA-8424:
--------------------------------------
Summary: Secondary index on column not working when using PK
Key: CASSANDRA-8424
URL: https://issues.apache.org/jira/browse/CASSANDRA-8424
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: [cqlsh 5.0.1 | Cassandra 2.1.2 | CQL spec 3.2.0 | Native protocol v3]
Ubuntu 14.04.5 64-bit
Reporter: Lex Lythius
I can do queries for collection keys/values as detailed in http://www.datastax.com/dev/blog/cql-in-2-1 without problems. Even without having a secondary index on the collection it will work (with {{ALLOW FILTERING}}) but only as long as the query is performed through a *secondary* index. If you go through PK it won't. Of course full-scan filtering query is not allowed.
As an example, I created this table:
{code:SQL}
CREATE TABLE test.uloc9 (
usr int,
type int,
gb ascii,
gb_q ascii,
info map<ascii, text>,
lat float,
lng float,
q int,
traits set<ascii>,
ts timestamp,
PRIMARY KEY (usr, type)
);
CREATE INDEX uloc9_gb ON test.uloc9 (gb);
CREATE INDEX uloc9_gb_q ON test.uloc9 (gb_q);
CREATE INDEX uloc9_traits ON test.uloc9 (traits);
{code}
then added some data and queried:
{code}
cqlsh:test> select * from uloc9 where gb='/nw' and info contains 'argentina' allow filtering;
usr | type | gb | gb_q | info | lat | lng | q | traits | ts
-----+------+-----+-------+------------------------------------------+--------------+--------------+---+--------------------+--------------------------
1 | 0 | /nw | /nw:1 | {'ci': 'san antonio', 'co': 'argentina'} | -40.74000168 | -65.80000305 | 1 | {'r:photographer'} | 2014-11-04 18:20:29-0300
1 | 1 | /nw | /nw:1 | {'ci': 'san antonio', 'co': 'argentina'} | -40.75799942 | -66.00800323 | 1 | {'r:photographer'} | 2014-11-04 18:20:29-0300
(2 rows)
cqlsh:test> select * from uloc9 where usr=1 and info contains 'argentina' allow filtering;
code=2200 [Invalid query] message="No indexed columns present in by-columns clause with Equal operator"
cqlsh:test> select * from uloc9 where usr=1 and type=0 and info contains 'argentina' allow filtering;
code=2200 [Invalid query] message="No indexed columns present in by-columns clause with Equal operator"
{code}
Maybe I got things wrong, but I don't see any reasons why collection filtering should fail when using PK while it succeeds using any secondary index (related or otherwise).
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