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From "Tim Armstrong (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (IMPALA-4051) Avoid unnecessary copy of RowDescriptor into RowBatch
Date Thu, 30 Mar 2017 19:59:41 GMT

     [ https://issues.apache.org/jira/browse/IMPALA-4051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tim Armstrong resolved IMPALA-4051.
-----------------------------------
    Resolution: Won't Fix

> Avoid unnecessary copy of RowDescriptor into RowBatch
> -----------------------------------------------------
>
>                 Key: IMPALA-4051
>                 URL: https://issues.apache.org/jira/browse/IMPALA-4051
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Backend
>    Affects Versions: Impala 2.7.0
>            Reporter: Tim Armstrong
>            Assignee: Tim Armstrong
>            Priority: Minor
>              Labels: perf
>
> RowBatch::row_desc_ is a value rather than a reference/pointer. This is not the usual
pattern and means that every time we copy a RowBatch we have to copy the embedded vectors,
which requires memory allocations.



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