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From "Bin Shi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-4594) Query Compilation where there are many guideposts causes overhead
Date Sun, 10 Feb 2019 23:55:00 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-4594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bin Shi updated PHOENIX-4594:
-----------------------------
    Description: If there are many guideposts, performance will suffer during query compilation.
 (was: If there are many guideposts, performance will suffer during query compilation because
we do a linear search of the guideposts to find the intersection with the scan ranges. Instead,
in BaseResultIterators.getParallelScans() we should populate an array of guideposts and perform
a binary search. )

> Query Compilation where there are many guideposts causes overhead
> -----------------------------------------------------------------
>
>                 Key: PHOENIX-4594
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4594
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: James Taylor
>            Assignee: Bin Shi
>            Priority: Major
>         Attachments: PHOENIX-4594-0913.patch, PHOENIX-4594_0917.patch, PHOENIX-4594_0918.patch
>
>
> If there are many guideposts, performance will suffer during query compilation.



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