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Posted to dev@phoenix.apache.org by "Xu Cang (JIRA)" <ji...@apache.org> on 2018/08/02 01:12:00 UTC
[jira] [Updated] (PHOENIX-4476) Range scan used for point lookups
if filter is not in order of primary keys
[ https://issues.apache.org/jira/browse/PHOENIX-4476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xu Cang updated PHOENIX-4476:
-----------------------------
Comment: was deleted
(was: testing comment. (to test devlist notification fix requested by Thomas))
> Range scan used for point lookups if filter is not in order of primary keys
> ---------------------------------------------------------------------------
>
> Key: PHOENIX-4476
> URL: https://issues.apache.org/jira/browse/PHOENIX-4476
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.13.1
> Reporter: Mujtaba Chohan
> Assignee: Xu Cang
> Priority: Major
> Labels: SFDC
> Attachments: PHOENIX-4476-workInProgress.001.patch
>
>
> {noformat}
> DROP TABLE TEST;
> CREATE TABLE IF NOT EXISTS TEST (
> PK1 CHAR(1) NOT NULL,
> PK2 VARCHAR NOT NULL,
> PK3 VARCHAR NOT NULL,
> PK4 UNSIGNED_LONG NOT NULL,
> PK5 VARCHAR NOT NULL,
> V1 VARCHAR,
> V2 VARCHAR,
> V3 UNSIGNED_LONG
> CONSTRAINT state_pk PRIMARY KEY (
> PK1,
> PK2,
> PK3,
> PK4,
> PK5
> )
> );
> // Incorrect explain plan with un-ordered PKs
> EXPLAIN SELECT V1 FROM TEST WHERE (PK1, PK5, PK2, PK3, PK4) IN (('A', 'E', 'N', 'T', 3), ('A', 'Y', 'G', 'T', 4));
> +------------------------------------------+------------------------------------------+------------------------------------------+---------+
> | PLAN | EST_BYTES_READ | EST_ROWS_READ | |
> +------------------------------------------+------------------------------------------+------------------------------------------+---------+
> | CLIENT 1-CHUNK PARALLEL 1-WAY ROUND ROBIN RANGE SCAN OVER TEST ['A'] | null | null |
> | SERVER FILTER BY (PK1, PK5, PK2, PK3, PK4) IN ([65,69,0,78,0,84,0,0,0,0,0,0,0,0,3],[65,89,0,71,0,84,0,0,0,0,0,0,0,0,4]) | null |
> +------------------------------------------+------------------------------------------+------------------------------------------+---------+
> // Correct explain plan with PKs in order
> EXPLAIN SELECT V1 FROM TEST WHERE (PK1,PK2,PK3,PK4,PK5) IN (('A', 'E', 'N',3, 'T'),('A', 'Y', 'G', 4, 'T'));
> +------------------------------------------+------------------------------------------+------------------------------------------+---------+
> | PLAN | EST_BYTES_READ | EST_ROWS_READ | |
> +------------------------------------------+------------------------------------------+------------------------------------------+---------+
> | CLIENT 1-CHUNK 2 ROWS 712 BYTES PARALLEL 1-WAY ROUND ROBIN POINT LOOKUP ON 2 KEYS OVER TEST | 712 | |
> +------------------------------------------+------------------------------------------+------------------------------------------+---------+
> {noformat}
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