[jira] [Commented] (FLINK-28057) LD_PRELOAD is hardcoded to x64 on flink-docker

["Yun Tang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-28057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17554106#comment-17554106 ] 

Yun Tang commented on FLINK-28057:
----------------------------------

Thanks for creating this issue. Flink seems do not have official arm-based docker image, do we need some changes to create arm-based docker image?

> LD_PRELOAD is hardcoded to x64 on flink-docker
> ----------------------------------------------
>
>                 Key: FLINK-28057
>                 URL: https://issues.apache.org/jira/browse/FLINK-28057
>             Project: Flink
>          Issue Type: Bug
>          Components: flink-docker
>    Affects Versions: 1.15.0
>            Reporter: Nicolas Ferrario
>            Priority: Minor
>
> ARM images are not using jemalloc because LD_PRELOAD is hardcoded to use an x64 path, causing this error:
> {noformat}
> ERROR: ld.so: object '/usr/lib/x86_64-linux-gnu/libjemalloc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
> {noformat}
> Right now docker-entrypoint is using this:
> {code:sh}
> maybe_enable_jemalloc() {
>     if [ "${DISABLE_JEMALLOC:-false}" == "false" ]; then
>         export LD_PRELOAD=$LD_PRELOAD:/usr/lib/x86_64-linux-gnu/libjemalloc.so
>     fi
> }
> {code}
> I propose we use this instead:
> {code:sh}
> maybe_enable_jemalloc() {
>     if [ "${DISABLE_JEMALLOC:-false}" == "false" ]; then
>         # Maybe use export LD_PRELOAD=$LD_PRELOAD:/usr/lib/$(uname -i)-linux-gnu/libjemalloc.so
>         if [[ `uname -i` == 'aarch64' ]]; then
>             export LD_PRELOAD=$LD_PRELOAD:/usr/lib/aarch64-linux-gnu/libjemalloc.so
>         else
>             export LD_PRELOAD=$LD_PRELOAD:/usr/lib/x86_64-linux-gnu/libjemalloc.so
>         fi
>     fi
> }
> {code}
> https://github.com/apache/flink-docker/pull/117



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