[jira] [Commented] (KYLIN-949) Query cache doesn't work properly for prepareStatement queries

["Huang Hua (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14696751#comment-14696751 ] 

Huang Hua commented on KYLIN-949:
---------------------------------

I am working on a patch for it and will post the patch soon here, thanks.

> Query cache doesn't work properly for prepareStatement queries
> --------------------------------------------------------------
>
>                 Key: KYLIN-949
>                 URL: https://issues.apache.org/jira/browse/KYLIN-949
>             Project: Kylin
>          Issue Type: Bug
>          Components: REST Service
>    Affects Versions: v0.7.2, v0.7.1
>            Reporter: Huang Hua
>            Assignee: Zhong,Jason
>
> There is a bug in searchQueryInCache() method, for PrepareSqlRequest, the cache logic is wrong which returns the same result for any PrepareSqlRequest with same sql no matter what the actual params are.
> For example, using "select LEAF_CATEG_ID from KYLIN_SALES where LEAF_CATEG_ID = ? group by LEAF_CATEG_ID;" with params=[65] to fire request, and kylin will return 65. Let's suppose that query is cached(we can modify kylin settings to enable it to cache every query).
> And then using the same sql but with params=[130], which returns 65 instead of 130.



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