[HADOOP-16849] start-build-env.sh behaves incorrectly when username is numeric only

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.3.0, 3.1.4, 3.2.2, 2.10.1
• Component/s: build
• Hadoop Flags: Reviewed
• Assignee: Jihyun Cho
• Reporter: Jihyun Cho
• Created: 10/Feb/20 10:42
• Updated: 12/Feb/20 05:23
• Resolved: 12/Feb/20 05:13

Description

When username is numaric only, the build environment does not run correctly.
Here is my case.

~/hadoop$ ./start-build-env.sh
...
Successfully tagged hadoop-build-1649860140:latest

 _   _           _                    ______
| | | |         | |                   |  _  \
| |_| | __ _  __| | ___   ___  _ __   | | | |_____   __
|  _  |/ _` |/ _` |/ _ \ / _ \| '_ \  | | | / _ \ \ / /
| | | | (_| | (_| | (_) | (_) | |_) | | |/ /  __/\ V /
\_| |_/\__,_|\__,_|\___/ \___/| .__/  |___/ \___| \_(_)
                              | |
                              |_|

This is the standard Hadoop Developer build environment.
This has all the right tools installed required to build
Hadoop from source.

I have no name!@fceab279f8d1:~/hadoop$ whoami
whoami: cannot find name for user ID 1112533
I have no name!@fceab279f8d1:~/hadoop$ sudo ls
sudo: unknown uid 1112533: who are you?

I changed USER_NAME to USER_ID in the script. Then it worked correctly.