[FLINK-28057] LD_PRELOAD is hardcoded to x64 on flink-docker

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.15.0
• Fix Version/s: 1.16.0, 1.15.2, 1.14.6
• Component/s: flink-docker
• Labels: pull-request-available
• Assignee: Nicolas Ferrario
• Reporter: Nicolas Ferrario
• Created: 14/Jun/22 13:39
• Updated: 30/Aug/22 09:16
• Resolved: 26/Jul/22 13:24

Description

ARM images are not using jemalloc because LD_PRELOAD is hardcoded to use an x64 path, causing this error:

ERROR: ld.so: object '/usr/lib/x86_64-linux-gnu/libjemalloc.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.

Right now docker-entrypoint is using this:

maybe_enable_jemalloc() {
    if [ "${DISABLE_JEMALLOC:-false}" == "false" ]; then
        export LD_PRELOAD=$LD_PRELOAD:/usr/lib/x86_64-linux-gnu/libjemalloc.so
    fi
}

I propose we use this instead:

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
}

https://github.com/apache/flink-docker/pull/117

Issue Links

• links to: GitHub Pull Request #117