[
https://issues.apache.org/jira/browse/KUDU-3564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Alexey Serbin updated KUDU-3564:
--------------------------------
Description:
Reproduce steps that copy from the Slack channel:
{code:sql}
// create the table and data in Impala:
CREATE TABLE age_table
(
id BIGINT,
name STRING,
age INT,
PRIMARY KEY(id,name,age)
)
PARTITION BY HASH (id) PARTITIONS 4,
HASH (name) PARTITIONS 4,
range (age)
(
PARTITION 30 <= VALUES < 60,
PARTITION 60 <= VALUES < 90
)
STORED AS KUDU
TBLPROPERTIES ('kudu.num_tablet_replicas' = '1');
ALTER TABLE age_table ADD RANGE PARTITION 90<= VALUES <120
HASH(id) PARTITIONS 3 HASH(name) PARTITIONS 3;
INSERT INTO age_table VALUES (3, 'alex', 50);
INSERT INTO age_table VALUES (12, 'bob', 100);
// This query produces wrong results: the expected row for 'bob' isn't returned.
// Note that the troublesome row is in the range partition with custom
(per-range) hash schema.
sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
-predicates='["AND", ["IN", "id", [12,20]]]'
Total count 0 cost 0.0224966 seconds
// This query produces correct results: the expected row for 'alex' is returned.
sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
-predicates='["AND", ["IN", "id", [3,20]]]'
(int64 id=3, int32 age=50)
Total count 1 cost 0.0178102 seconds
// However, predicates on the primary key columns seem to work as expected,
even for the rows in the range with custom hash schema.
sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
-predicates='["AND", ["=", "id", 12]]'
(int64 id=12, int32 age=100)
Total count 1 cost 0.0137217 seconds
{code}
was:
Reproduce steps that copy from the Slack channel:
{code:sql}
// create the table and data in Impala:
CREATE TABLE age_table
(
id BIGINT,
name STRING,
age INT,
PRIMARY KEY(id,name,age)
)
PARTITION BY HASH (id) PARTITIONS 4,
HASH (name) PARTITIONS 4,
range (age)
(
PARTITION 30 <= VALUES < 60,
PARTITION 60 <= VALUES < 90
)
STORED AS KUDU
TBLPROPERTIES ('kudu.num_tablet_replicas' = '1');
ALTER TABLE age_table ADD RANGE PARTITION 90<= VALUES <120
HASH(id) PARTITIONS 3 HASH(name) PARTITIONS 3;
insert into age_table values (3, 'alex', 50);
insert into age_table values (12, 'bob', 100);
// only predicate "in" for data in custom hash cannot be found,
sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
-predicates='["AND", ["IN", "id", [3,20]]]'
(int64 id=3, int32 age=50)
Total count 1 cost 0.0178102 seconds {code}
> Range specific hashing table when queried with InList predicate may lead to
> incorrect results
> ---------------------------------------------------------------------------------------------
>
> Key: KUDU-3564
> URL: https://issues.apache.org/jira/browse/KUDU-3564
> Project: Kudu
> Issue Type: Bug
> Affects Versions: 1.17.0
> Reporter: YifanZhang
> Priority: Major
>
> Reproduce steps that copy from the Slack channel:
>
> {code:sql}
> // create the table and data in Impala:
> CREATE TABLE age_table
> (
> id BIGINT,
> name STRING,
> age INT,
> PRIMARY KEY(id,name,age)
> )
> PARTITION BY HASH (id) PARTITIONS 4,
> HASH (name) PARTITIONS 4,
> range (age)
> (
> PARTITION 30 <= VALUES < 60,
> PARTITION 60 <= VALUES < 90
> )
> STORED AS KUDU
> TBLPROPERTIES ('kudu.num_tablet_replicas' = '1');
> ALTER TABLE age_table ADD RANGE PARTITION 90<= VALUES <120
> HASH(id) PARTITIONS 3 HASH(name) PARTITIONS 3;
> INSERT INTO age_table VALUES (3, 'alex', 50);
> INSERT INTO age_table VALUES (12, 'bob', 100);
> // This query produces wrong results: the expected row for 'bob' isn't
> returned.
> // Note that the troublesome row is in the range partition with custom
> (per-range) hash schema.
> sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
> -predicates='["AND", ["IN", "id", [12,20]]]'
> Total count 0 cost 0.0224966 seconds
> // This query produces correct results: the expected row for 'alex' is
> returned.
> sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
> -predicates='["AND", ["IN", "id", [3,20]]]'
> (int64 id=3, int32 age=50)
> Total count 1 cost 0.0178102 seconds
> // However, predicates on the primary key columns seem to work as expected,
> even for the rows in the range with custom hash schema.
> sudo -u kudu kudu table scan <master.url> default.age_table -columns=id,age
> -predicates='["AND", ["=", "id", 12]]'
> (int64 id=12, int32 age=100)
> Total count 1 cost 0.0137217 seconds
> {code}
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