[jira] [Updated] (IMPALA-5001) Allow bootstrap_toolchain.py to update dependencies if toolchain version changes

["Tim Armstrong (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-5001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong updated IMPALA-5001:
----------------------------------
    Issue Type: Improvement  (was: Bug)

> Allow bootstrap_toolchain.py to update dependencies if toolchain version changes
> --------------------------------------------------------------------------------
>
>                 Key: IMPALA-5001
>                 URL: https://issues.apache.org/jira/browse/IMPALA-5001
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Infrastructure
>    Affects Versions: Impala 2.9.0
>            Reporter: Henry Robinson
>            Priority: Major
>
> Currently, if you update a dependency without changing its version, and run {{bin/bootstrap_toolchain.py}}, it won't download the new dependency.
> This is a problem for situations like IMPALA-4983 where we want to change the build flags but don't have a new version number. 
> My suggestion is to use the toolchain build ID as a 'version' parameter, and write that to disk. If the toolchain ID changes, {{bootstrap_toolchain.py}} should detect that case and redownload all dependencies. Although it's suboptimal to download *all* dependencies, it's better than not downloading enough of them.



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