tree c9f30a0d808bdabe0d06c10e17c13a6b6a1a9f25
parent cba6e344eef1689fc22d1dd3e2b86dbd66b5797f
author xiaomeng <xiaomeng@cloudera.com> 1571778090 -0700
committer Impala Public Jenkins <impala-public-jenkins@cloudera.com> 1574727389 +0000

IMPALA-8065: Add OS distribution name in OSInfo

Before this change OsInfo::DebugString() would print two lines:
- OS version: the long name of the Linux kernel from /proc/version
- Clock: the type of clock used
After this change OsInfo::DebugString() will print three lines:
- OS distribution: the short name of the OS release.
  If Docker is being used this is the name of the Container OS.
- OS version: the long name of the Linux kernel from /proc/version.
  If Docker is being used this is the description of the Host Kernel.
- Clock: the type of clock used.

Tested locally, the displayed OS Info in Ubuntu16 dev box is:
OS distribution: Ubuntu 16.04.6 LTS
OS version: Linux version 4.15.0-65-generic (buildd@lcy01-amd64-017)
(gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10))
Clock: clocksource: 'tsc', clockid_t: CLOCK_MONOTONIC

Also checked with diff OS in docker: centos, redhat, ubuntu, oracle,
debian to make sure /etc/os-release exists and PRETTY_NAME in that file.
Each OS picked one version to test.
Specially for centos6 and redhat6, which have redhat-release instead of
os-release, copied redhat-release into Ubuntu16 dev box and verified os
version in mini-cluster.

Added new backend test os-info-test.cc.

Change-Id: I848c9e53ee4e0bf8ae0874bb6da28e8efa7f7c8a
Reviewed-on: http://gerrit.cloudera.org:8080/14531
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>