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https://issues.apache.org/jira/browse/HADOOP-12637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15055715#comment-15055715
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Kai Zheng commented on HADOOP-12637:
------------------------------------
Thanks [~nielsbasjes] for the comment! I agree it's ok not to support root
user, and update the building doc. Considering the following codes assumes it's
normal user (not root), I thought it would be good to detect if it's root user
or not, if it is then fails fast.
In *start-build-env.sh*:
{code}
RUN groupadd --non-unique -g ${GROUP_ID} ${USER_NAME}
RUN useradd -g ${GROUP_ID} -u ${USER_ID} -k /root -m ${USER_NAME}
ENV HOME /home/${USER_NAME}
...
docker run --rm=true -t -i \
-v "${PWD}:/home/${USER_NAME}/hadoop" \
-w "/home/${USER_NAME}/hadoop" \
-v "${HOME}/.m2:/home/${USER_NAME}/.m2" \
-u "${USER_NAME}" \
"hadoop-build-${USER_NAME}"
{code}
> Docker building support doesn't support root user
> -------------------------------------------------
>
> Key: HADOOP-12637
> URL: https://issues.apache.org/jira/browse/HADOOP-12637
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Kai Zheng
> Assignee: Kai Zheng
>
> According to the instructions in *BUILDING.txt*, started the docker building
> but as root user. and then found it doesn't work. The related scripts need to
> be improved to support root user or if we won't, better to update
> *BUILDING.txt* to explicitly say root user isn't supported. This may save
> somebody's time.
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