[jira] [Created] (KYLIN-3001) Cache key issue

["Pan, Julian (JIRA)" <ji...@apache.org>]

Pan, Julian created KYLIN-3001:
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             Summary: Cache key issue 
                 Key: KYLIN-3001
                 URL: https://issues.apache.org/jira/browse/KYLIN-3001
             Project: Kylin
          Issue Type: Bug
          Components: Query Engine
            Reporter: Pan, Julian
            Assignee: liyang
            Priority: Critical


Currently the cacheKey generate by SQLRequest getCacheKey:
cacheKey = Lists.newArrayList(sql.replaceAll("\\s+", ""), project, offset, limit, acceptPartial,
                backdoorToggles);
Will 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 apply a patch? Or just provide the fix:
cacheKey = Lists.newArrayList(sql.replaceAll("[ ]", " "), project, offset, limit, acceptPartial,
                backdoorToggles);



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