[IMPALA-12331] Installing Maven 3.9.2 at the start of a precommit build fails sometimes

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 4.3.0
• Fix Version/s: Impala 4.3.0
• Component/s: Infrastructure
• Epic Color: ghx-label-1
• Assignee: Laszlo Gaal
• Reporter: Laszlo Gaal
• Created: 02/Aug/23 18:03
• Updated: 03/Aug/23 11:25
• Resolved: 03/Aug/23 11:25

Description

The installation of Maven 3.9.2 from bin/bootstrap_system.sh can sometimes fail when the downloaded copy is symlinked into /usr/local/bin.
The error is:

00:01:00.302 ++ sudo ln -s /usr/local/apache-maven-3.9.2/bin/mvn /usr/local/bin
00:01:00.305 ln: failed to create symbolic link '/usr/local/bin/mvn': File exists

caused probably by the worker node being reused for a second build.

ln should be invoked with the -f option here to suppress the existence check.