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Posted to dev@phoenix.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2019/01/23 05:21:00 UTC

[jira] [Updated] (PHOENIX-5106) Avoid getting an explain plan for each query (even without tracing)

     [ https://issues.apache.org/jira/browse/PHOENIX-5106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl updated PHOENIX-5106:
-----------------------------------
    Summary: Avoid getting an explain plan for each query (even without tracing)  (was: Avoid geting an explain plan for each query (even without tracing))

> Avoid getting an explain plan for each query (even without tracing)
> -------------------------------------------------------------------
>
>                 Key: PHOENIX-5106
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5106
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>            Priority: Major
>              Labels: performance
>         Attachments: 5106.txt
>
>
> See this code fragment in BaseQueryPlan.iterator(...):
> {code}
>         // wrap the iterator so we start/end tracing as we expect
>         TraceScope scope =
>                 Tracing.startNewSpan(context.getConnection(), "Creating basic query for "
>                         + getPlanSteps(iterator));
>         return (scope.getSpan() != null) ? new TracingIterator(scope, iterator) : iterator;
> {code}
> This will get the plan steps for each and every call to iterator, whether we're tracing or not.



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