[jira] [Closed] (FLINK-17033) Upgrade OpenJDK docker image for Kubernetes

["Yang Wang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-17033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yang Wang closed FLINK-17033.
-----------------------------
    Resolution: Fixed

> Upgrade OpenJDK docker image for Kubernetes
> -------------------------------------------
>
>                 Key: FLINK-17033
>                 URL: https://issues.apache.org/jira/browse/FLINK-17033
>             Project: Flink
>          Issue Type: Improvement
>          Components: Deployment / Kubernetes
>            Reporter: Canbin Zheng
>            Priority: Major
>             Fix For: 1.11.0, 1.12.0
>
>
> The current docker image {{openjdk:8-jre-alpine}} used by Kubernetes has many problems, here is some of them:
>  # There is no official support for this image since the commit [https://github.com/docker-library/openjdk/commit/3eb0351b208d739fac35345c85e3c6237c2114ec#diff-f95ffa3d1377774732c33f7b8368e099]
>  # [DNS-lookup-5s-delay|https://k8s.imroc.io/troubleshooting/cases/dns-lookup-5s-delay]
>  # [DNS resolver does not read /etc/hosts|https://github.com/golang/go/issues/22846]
>  # It uses musl libc instead of glibc. This could cause a problem if we want to run native library like intel MKL for native BLAS support
> Therefore, this ticket proposes to investigate an alternative official JDK docker image; I think it's a good choice to use {{openjdk:8-jre-slim}}(184MB) instead, the reasons are as follows:
>  # It has official support from openjdk: [https://github.com/docker-library/docs/blob/master/openjdk/README.md#supported-tags-and-respective-dockerfile-links]
>  # It is based on debian and does not have many problems such as DNS lookup delay.
>  # It's much smaller in size than other official docker images.



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