GauthamBanasandra commented on a change in pull request #3349:
URL: https://github.com/apache/hadoop/pull/3349#discussion_r698981869
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File path: dev-support/docker/Dockerfile
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@@ -18,234 +17,80 @@
# Dockerfile for installing the necessary dependencies for building Hadoop.
# See BUILDING.txt.
-FROM ubuntu:xenial
+FROM centos:7
Review comment:
We've been using Ubuntu as the default build environment. May I know why
you would want to use Centos 7 instead of Ubuntu Xenial?
##########
File path: dev-support/docker/Dockerfile
##########
@@ -18,234 +17,80 @@
# Dockerfile for installing the necessary dependencies for building Hadoop.
# See BUILDING.txt.
-FROM ubuntu:xenial
+FROM centos:7
Review comment:
That's because Java 7 isn't there in the Ubuntu Xenial toolchain. Have
you tried installing the Java 7 by downloading its tarball? Maybe this'll help
-
https://linuxconfig.org/oracle-java-jdk-7-on-ubuntu-linux-source-or-rpm-installation
I would advise against changing the base image to Centos 7 if this is the
only reason. Here are my suggestions -
1. If you still want to use Centos 7, I would suggest that you create a
separate Dockerfile for it (like Dockerfile_centos_7) and leave the original
Dockerfile as it is.
2. Or, just install Java 7 from the tarball in Dockerfile.
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