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Posted to issues@drill.apache.org by "Parth Chandra (JIRA)" <ji...@apache.org> on 2015/04/07 06:53:12 UTC
[jira] [Updated] (DRILL-2290) Very slow performance for a query
involving nested map
[ https://issues.apache.org/jira/browse/DRILL-2290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Parth Chandra updated DRILL-2290:
---------------------------------
Fix Version/s: (was: 0.9.0)
1.0.0
> Very slow performance for a query involving nested map
> ------------------------------------------------------
>
> Key: DRILL-2290
> URL: https://issues.apache.org/jira/browse/DRILL-2290
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types
> Affects Versions: 0.8.0
> Reporter: Chun Chang
> Assignee: Parth Chandra
> Fix For: 1.0.0
>
>
> #Thu Feb 19 18:40:10 EST 2015
> git.commit.id.abbrev=1ceddff
> This query took 17 minutes to complete. Too long. I think this happened after the fix dealing with nested maps.
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select b.id, a.ooa[1].fl.f1, b.oooi, a.ooof.oa.oab.oabc from `complex.json` a inner join `complex.json` b on a.ooa[1].fl.f1=b.ooa[1].fl.f1 order by b.id limit 20;
> +------------+------------+------------+------------+
> | id | EXPR$1 | oooi | EXPR$3 |
> +------------+------------+------------+------------+
> | 1 | 1.6789 | {"oa":{"oab":{"oabc":1}}} | 1.5678 |
> | 3 | 3.6789 | {"oa":{"oab":{"oabc":3}}} | 3.5678 |
> | 4 | 4.6789 | {"oa":{"oab":{"oabc":4}}} | 4.5678 |
> | 5 | 5.6789 | {"oa":{"oab":{"oabc":5}}} | 5.5678 |
> | 7 | 7.6789 | {"oa":{"oab":{"oabc":7}}} | 7.5678 |
> | 9 | 9.6789 | {"oa":{"oab":{"oabc":9}}} | 9.5678 |
> | 10 | 10.6789 | {"oa":{"oab":{"oabc":10}}} | 10.5678 |
> | 11 | 11.6789 | {"oa":{"oab":{"oabc":11}}} | 11.5678 |
> | 13 | 13.6789 | {"oa":{"oab":{"oabc":13}}} | 13.5678 |
> | 14 | 14.6789 | {"oa":{"oab":{"oabc":14}}} | 14.5678 |
> | 15 | 15.6789 | {"oa":{"oab":{"oabc":15}}} | 15.5678 |
> | 16 | 16.6789 | {"oa":{"oab":{"oabc":16}}} | 16.5678 |
> | 17 | 17.6789 | {"oa":{"oab":{"oabc":17}}} | 17.5678 |
> | 18 | 18.6789 | {"oa":{"oab":{"oabc":18}}} | 18.5678 |
> | 19 | 19.6789 | {"oa":{"oab":{"oabc":19}}} | 19.5678 |
> | 20 | 20.6789 | {"oa":{"oab":{"oabc":20}}} | 20.5678 |
> | 21 | 21.6789 | {"oa":{"oab":{"oabc":21}}} | 21.5678 |
> | 22 | 22.6789 | {"oa":{"oab":{"oabc":22}}} | 22.5678 |
> | 24 | 24.6789 | {"oa":{"oab":{"oabc":24}}} | 24.5678 |
> | 25 | 25.6789 | {"oa":{"oab":{"oabc":25}}} | 25.5678 |
> +------------+------------+------------+------------+
> 20 rows selected (1020.036 seconds)
> {code}
> The query deals just a little less than 1 million records so should not be that slow.
> {code}
> 0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select count(*) from (select b.id, a.ooa[1].fl.f1, b.oooi, a.ooof.oa.oab.oabc from `complex.json` a inner join `complex.json` b on a.ooa[1].fl.f1=b.ooa[1].fl.f1) c;
> +------------+
> | EXPR$0 |
> +------------+
> | 900190 |
> +------------+
> 1 row selected (700.516 seconds)
> {code}
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