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Posted to issues@hawq.apache.org by "Paul Guo (JIRA)" <ji...@apache.org> on 2016/12/12 09:46:59 UTC

[jira] [Assigned] (HAWQ-1214) Remove resource_parameters in calculate_planner_segment_num()

     [ https://issues.apache.org/jira/browse/HAWQ-1214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Guo reassigned HAWQ-1214:
------------------------------

    Assignee: Paul Guo  (was: Lei Chang)

> Remove resource_parameters in calculate_planner_segment_num()
> -------------------------------------------------------------
>
>                 Key: HAWQ-1214
>                 URL: https://issues.apache.org/jira/browse/HAWQ-1214
>             Project: Apache HAWQ
>          Issue Type: Bug
>            Reporter: Paul Guo
>            Assignee: Paul Guo
>
> The reasons are:
> 1) It is not used anymore.
> 2) Have seen crash due to this.  The scenario is that:
>  
> The datalocality memory context on which resource_parameters is palloc-ed is reset before calculate_planner_segment_num() finishes, thus later access to resource_parameters could lead to crash or wrong results. A code path example which could lead to segfault is:
> ProcessUtility()->PerformCursorOpen()->_copyPlannedStmt()->_copyQueryResourceParameters()



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