[jira] [Commented] (IMPALA-9686) Toolchain Python missing readline support

["Laszlo Gaal (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-9686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17090054#comment-17090054 ] 

Laszlo Gaal commented on IMPALA-9686:
-------------------------------------

Need to add readline-devel (on redhat/centos) or equivalent to the build platform. Building Python on a non-dockerized CentOS 7 test platform after installing readline-devel yielded a Python2 binary that does have readline functionality and can {{import readline}}.

> Toolchain Python missing readline support
> -----------------------------------------
>
>                 Key: IMPALA-9686
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9686
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Infrastructure
>    Affects Versions: Impala 4.0
>            Reporter: Laszlo Gaal
>            Assignee: Laszlo Gaal
>            Priority: Critical
>
> Toolchain Python (made default by IMPALA-9626) is missing readline support. When run via
> {{impala-python}}, the up arrow just prints control characters instead of retrieving earlier input. Also, "{{import readline}}" throws an error.
> All the above works when executed in system Python.
> This is most disturbing when encountered in the Impala shell invoked from a development environment.



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