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From "Varun Barala (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-11679) Cassandra Driver returns different number of results depending on fetchsize
Date Thu, 28 Apr 2016 07:34:13 GMT
Varun Barala created CASSANDRA-11679:
----------------------------------------

             Summary: Cassandra Driver returns different number of results depending on fetchsize
                 Key: CASSANDRA-11679
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11679
             Project: Cassandra
          Issue Type: Bug
          Components: CQL
            Reporter: Varun Barala


I'm trying to fetch all distinct keys from a CF using cassandra-driver (2.1.7.1) and I observed
some strange behavior :-

The total distinct rows are 498 so If I perform the query get All distinctKeys It return 503
instead of 498(five keys twice).
But If I define the fetch size in select statement more than 498 then it returns exact 498
rows. 

And If I execute same statement on Dev-center it returns 498 rows.

Table Schema:-
----------------------
CREATE TABLE product.kg_ky_wk_taisyo_kikan (
    tenant_id text,
    str_key text,
    row_id uuid,
    value blob,
    PRIMARY KEY ((tenant_id, str_key))
) WITH 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'}
    AND compression = {'sstable_compression': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    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 = '99.0PERCENTILE';

query :-
------------
SELECT DISTINCT str_key,tenant_id FROM product.kg_ky_wk_taisyo_kikan LIMIT 2147483647;



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