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Posted to issues@impala.apache.org by "Henry Robinson (JIRA)" <ji...@apache.org> on 2017/07/20 17:55:00 UTC

[jira] [Created] (IMPALA-5688) Speed up a couple of heavy-hitting expr-tests

Henry Robinson created IMPALA-5688:
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             Summary: Speed up a couple of heavy-hitting expr-tests
                 Key: IMPALA-5688
                 URL: https://issues.apache.org/jira/browse/IMPALA-5688
             Project: IMPALA
          Issue Type: Improvement
          Components: Infrastructure
    Affects Versions: Impala 2.9.0
            Reporter: Henry Robinson
            Assignee: Henry Robinson
            Priority: Minor
             Fix For: Impala 2.10.0


Two tests ({{LongReverse}} and the base64 tests in {{StringFunctions}}) run their tests over all lengths from 0..{{some length}}. Both take several minutes to complete. This adds a lot of runtime for not much more confidence. If instead we pick a set of 'interesting' (including powers-of-two, prime numbers, edge-cases) lengths, we can get a similar amount of confidence while significantly reducing the runtime of expr-test.



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