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https://issues.apache.org/jira/browse/KYLIN-5763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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pengfei.zhan updated KYLIN-5763:
--------------------------------
Description:
If there are many queryHistory records,
1) filtering them by query object is very slow;
2) searching them by key(the model name) cannot work.
However, executing query in mysql, the result responses very fast.
{code:java}
select distinct model from kylin_query_history_realization
where project_name = "abc";
select distinct engine_type from kylin_query_history where engine_type <>
'NATIVE' and project_name = "abc";
{code}
was:
The following sql can not match index just has dimension lstg_format_name.
{code:sql}
select max(lstg_format_name) max1,
max( case when 1=1 then lstg_format_nameend ) max2
from test_kylin_fact{code}
> Very slow to filter query history
> ---------------------------------
>
> Key: KYLIN-5763
> URL: https://issues.apache.org/jira/browse/KYLIN-5763
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: 5.0-beta
> Reporter: pengfei.zhan
> Assignee: pengfei.zhan
> Priority: Major
> Fix For: 5.0-beta
>
>
> If there are many queryHistory records,
> 1) filtering them by query object is very slow;
> 2) searching them by key(the model name) cannot work.
>
> However, executing query in mysql, the result responses very fast.
> {code:java}
> select distinct model from kylin_query_history_realization
> where project_name = "abc";
> select distinct engine_type from kylin_query_history where engine_type <>
> 'NATIVE' and project_name = "abc";
> {code}
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