[jira] [Resolved] (IMPALA-9863) Print warning when developer sets LD_LIBRARY_PATH with the system library

["Joe McDonnell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-9863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joe McDonnell resolved IMPALA-9863.
-----------------------------------
    Fix Version/s: Not Applicable
       Resolution: Won't Fix

We've been using GCC 7.5 for a while and developers have adjusted. This doesn't seem necessary anymore.

If someone wants this, please reopen.

> Print warning when developer sets LD_LIBRARY_PATH with the system library
> -------------------------------------------------------------------------
>
>                 Key: IMPALA-9863
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9863
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Infrastructure
>    Affects Versions: Impala 4.0
>            Reporter: Joe McDonnell
>            Priority: Major
>             Fix For: Not Applicable
>
>
> With the upgrade to GCC 7.5.0, the libstdc++ used for Impala development is now newer than the system libraries on several supported platforms (Centos 7, Ubuntu 16). Ubuntu 16 is particularly important as the main development platform.
> Up until recently, bin/bootstrap_system.sh added this line to bin/impala-config-local.sh:
>  
> {noformat}
> export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}{noformat}
> This line causes problems for Kudu startup, because Kudu uses symbols from GCC 7.5.0's libstdc++ that are not present in the system libstdc++. When it tries to lookup those symbols, it tries LD_LIBRARY_PATH first and fails with this message:
>  
> {noformat}
> /opt/Impala-Toolchain/toolchain-packages-gcc7.5.0/kudu-d652cab17/release/bin/kudu-tserver: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /opt/Impala-Toolchain/toolchain-packages-gcc7.5.0/kudu-d652cab17/release/bin/kudu-tserver){noformat}
> Without the LD_LIBRARY_PATH, the kudu binary would use its RPATH to find the toolchain's libstdc++ (and thus not have this problem).
> Let's print a warning for this.



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