DOAN DuyHai created CASSANDRA-11130:
---------------------------------------
Summary: [SASI Pre-QA] = semantics not respected when using
StandardAnalyzer
Key: CASSANDRA-11130
URL: https://issues.apache.org/jira/browse/CASSANDRA-11130
Project: Cassandra
Issue Type: Bug
Components: CQL
Reporter: DOAN DuyHai
Tested from build
[CASSANDRA-11067|https://issues.apache.org/jira/browse/CASSANDRA-11067]
{code:sql}
CREATE KEYSPACE music WITH replication = {'class': 'SimpleStrategy',
'replication_factor': '1'} AND durable_writes = true;
CREATE TABLE music.albums (
id int PRIMARY KEY,
artist text,
title1 text,
title2 text
);
CREATE CUSTOM INDEX ON music.albums (title1) USING
'org.apache.cassandra.index.sasi.SASIIndex' WITH OPTIONS =
{'tokenization_skip_stop_words': 'true', 'analyzer_class':
'org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer', 'case_sensitive':
'false', 'mode': 'PREFIX', 'tokenization_enable_stemming': 'true'};
CREATE CUSTOM INDEX ON music.albums (title2) USING
'org.apache.cassandra.index.sasi.SASIIndex' WITH OPTIONS =
{'tokenization_skip_stop_words': 'true', 'analyzer_class':
'org.apache.cassandra.index.sasi.analyzer.StandardAnalyzer', 'case_sensitive':
'false', 'mode': 'CONTAINS', 'tokenization_enable_stemming': 'true'};
INSERT INTO music.albums(id, artist, title1, title2) VALUES(1, 'Superpitcher',
'Yesterday', 'Yesterday');
INSERT INTO music.albums(id, artist, title1, title2) VALUES(1, 'Hilary Duff',
'So Yesterday', 'So Yesterday');
INSERT INTO music.albums(id, artist, title1, title2) VALUES(1, 'The Mr. T
Experience', 'Yesterday Rules', 'Yesterday Rules');
SELECT artist,title1 FROM music.albums WHERE title1='Yesterday';
artist | title1
------------------------+----------------
Superpitcher | Yesterday
Hilary Duff | So Yesterday
The Mr. T Experience | Yesterday Rules
(3 rows)
SELECT artist,title1 FROM music.albums WHERE title2='Yesterday';
artist | title1
------------------------+----------------
Superpitcher | Yesterday
Hilary Duff | So Yesterday
The Mr. T Experience | Yesterday Rules
(3 rows)
{code}
The semantic of *=* is not respected. SASI should return only 1 row with exact
match. Using *LIKE* would return all 3 rows. It does impact both *PREFIX* and
*CONTAINS* mode. Using *NonTokenizerAnalyzer* return 1 row with exact match.
So indeed, the semantics of *=* depends on the chosen analyzer, which is
inconsistent. We should force *=* to be exact match no matter which analyzer is
chosen.
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