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From Zao Liu <zao...@gmail.com>
Subject given partition key and secondary index, still require allow_filtering?
Date Mon, 31 Oct 2016 08:00:07 GMT
Hi,

I created a table, schema like here:

CREATE TABLE profile_new.user_categories_1477899735 (

    id bigint,

    category int,

    score double,

    PRIMARY KEY (id, category)

) WITH CLUSTERING ORDER BY (category ASC)

    AND bloom_filter_fp_chance = 0.01

    AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}

    AND comment = ''

    AND compaction = {'class':
'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
'max_threshold': '32', 'min_threshold': '4'}

    AND compression = {'chunk_length_in_kb': '64', 'class':
'org.apache.cassandra.io.compress.LZ4Compressor'}

    AND crc_check_chance = 1.0

    AND dclocal_read_repair_chance = 0.1

    AND default_time_to_live = 0

    AND gc_grace_seconds = 864000

    AND max_index_interval = 2048

    AND memtable_flush_period_in_ms = 0

    AND min_index_interval = 128

    AND read_repair_chance = 0.0

    AND speculative_retry = '99PERCENTILE';

CREATE INDEX user_categories_1477899735_score_idx ON
profile_new.user_categories_1477899735 (score);


cqlsh:profile_new> select * from user_categories_1477899735 where id=3674;


But somehow when I pass partition key and secondary index key, it still
complains:

cqlsh:profile_new> select * from user_categories_1477899735 where id=3674
and score > 0.5;

*InvalidRequest: Error from server: code=2200 [Invalid query]
message="Cannot execute this query as it might involve data filtering and
thus may have unpredictable performance. If you want to execute this query
despite the performance unpredictability, use ALLOW FILTERING"*

cqlsh:profile_new>

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