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Posted to issues@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2017/02/04 13:25:51 UTC

[jira] [Created] (KYLIN-2424) Optimize the integration test's performance

Shaofeng SHI created KYLIN-2424:
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             Summary: Optimize the integration test's performance
                 Key: KYLIN-2424
                 URL: https://issues.apache.org/jira/browse/KYLIN-2424
             Project: Kylin
          Issue Type: Improvement
          Components: Tools, Build and Test
            Reporter: Shaofeng SHI
            Assignee: Shaofeng SHI
             Fix For: v2.0.0


Kylin's integration test is slow, especially the ITCombinationTest. Most of time are spent on H2 to execute the test queries. In a latest integration test, this test case take 90 minutes to finish.

By checking H2's document, I think the main problem is the absence of index on the tables, while index is very important for a relational database's query performance. So when Kylin create the tables in H2, shoud create index on the columns that will be used in the queries, like the pk/fk, the filtering columns etc. 



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