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Posted to issues@impala.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2019/05/13 18:23:01 UTC

[jira] [Created] (IMPALA-8542) Access trace collection for data cache

Todd Lipcon created IMPALA-8542:
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             Summary: Access trace collection for data cache
                 Key: IMPALA-8542
                 URL: https://issues.apache.org/jira/browse/IMPALA-8542
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


Now that we have a remote-read data cache, it would be useful to log an access trace. The trace can be then fed back into various cache policy simulators to compare the relative performance, and do "what if" analysis (how would hit rate react with larger/smaller capacities)



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