[jira] [Created] (BIGTOP-2802) Some packages don't create necessary groups if the users correspond to them in advance on debian-based systems

["Kengo Seki (JIRA)" <ji...@apache.org>]

Kengo Seki created BIGTOP-2802:
----------------------------------

             Summary: Some packages don't create necessary groups if the users correspond to them in advance on debian-based systems
                 Key: BIGTOP-2802
                 URL: https://issues.apache.org/jira/browse/BIGTOP-2802
             Project: Bigtop
          Issue Type: Improvement
    Affects Versions: 1.2.0
            Reporter: Kengo Seki


For example, user and group creation for yarn are independent on rpm-based systems:

{code:title=bigtop-packages/src/rpm/hadoop/SPECS/hadoop.spec}
557 %pre yarn
558 getent group yarn >/dev/null   || groupadd -r yarn
559 getent passwd yarn >/dev/null || /usr/sbin/useradd --comment "Hadoop Yarn" --shell /bin/bash -M -r -g yarn -G hadoop --home %{state_yarn} yarn
{code}

but on debian-based systems, yarn group creation is skipped if yarn user is created in advance:

{code:title=bigtop-packages/src/deb/hadoop/hadoop-yarn.preinst}
 34     install|upgrade)
 35         if ! getent passwd yarn >/dev/null; then
 36             # Adding system user: yarn.
 37             adduser \
 38                 --system \
 39                 --group \
 40                 --home /var/lib/hadoop-yarn \
 41                 --gecos "Hadoop YARN" \
 42                 --shell /bin/bash \
 43                 yarn >/dev/null 2>/dev/null || :
 44             usermod --append --groups hadoop yarn || :
 45         fi
 46     ;;
{code}

It causes a problem when the package is used with Ambari. When Ambari installs a stack, it creates users such as hdfs, yarn, mapred besides hadoop, but it creates only hadoop group.
So installing hadoop-yarn skips the above path and fails with the following error:

{code}
Setting up hadoop-yarn (2.7.3-1) ...
chown: invalid group: 'root:yarn'
dpkg: error processing package hadoop-yarn (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 hadoop-yarn
{code}

at line 24 in the following code:

{code:title=bigtop-packages/src/deb/hadoop/hadoop-yarn.postinst}
 23     configure)
 24         chown root:yarn /usr/lib/hadoop-yarn/bin/container-executor
 25         chmod 4754 /usr/lib/hadoop-yarn/bin/container-executor
 26         mkdir -p /var/log/hadoop-yarn /var/run/hadoop-yarn /var/lib/hadoop-yarn/cache || :
 27         chown yarn:hadoop /var/log/hadoop-yarn /var/run/hadoop-yarn
 28         chmod g+w /var/log/hadoop-yarn /var/run/hadoop-yarn
 29         chown yarn:hadoop /var/lib/hadoop-yarn/ /var/lib/hadoop-yarn/cache
 30         chmod 0755 /var/lib/hadoop-yarn
 31         chmod 1777 /var/lib/hadoop-yarn/cache
 32     ;;
{code}



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