[jira] [Assigned] (KYLIN-3001) Fix the wrong Cache key issue

["Shaofeng SHI (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI reassigned KYLIN-3001:
-----------------------------------

    Assignee: Pan, Julian  (was: liyang)

> Fix the wrong Cache key issue 
> ------------------------------
>
>                 Key: KYLIN-3001
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3001
>             Project: Kylin
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: v2.1.0
>            Reporter: Pan, Julian
>            Assignee: Pan, Julian
>            Priority: Major
>             Fix For: v2.3.0
>
>         Attachments: KYLIN_3001_Cache_key_issue.patch
>
>
> Currently the cacheKey generate by SQLRequest getCacheKey:
> cacheKey = Lists.newArrayList(sql.replaceAll("\\s+", ""), project, offset, limit, acceptPartial,
>                 backdoorToggles);
> Which will remove all the space and break line.
> If I have a sql:
> select a, sum(c) from table 
> --where a > 0 group by a;
> and another sql:
> select a, sum(c) from table 
> --where a > 0 
> group by a;
> The two sql will share same cache key.
> But the first sql should be break. If you query second sql, and then query the first again. It will return result.
> And another issue is if remove all space, which will mix a as b and aasb.
> I think the better way is just replace multiple space to one space
> Should I create a patch? Or just provide the fix:
> cacheKey = Lists.newArrayList(sql.replaceAll("[ ]", " "), project, offset, limit, acceptPartial,
>                 backdoorToggles);



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)