Not able to start VizQL server after configuring vizqlserver.vmopts

Issue

Not able to start VizQL server in Tableau Server 2021.1.x after configuring vizqlserver.vmopts with the custom values including "UseParNewGC" such as:

tsm configuration set -k vizqlserver.vmopts -v "-XX:+UseConcMarkSweepGC -Xmx2g -Xms256m -XX:MaxNewSize=208m -XX:SurvivorRatio=5 -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=15 -XX:+CrashOnOutOfMemoryError -XX:-CreateMinidumpOnCrash"

Environment

Tableau Server 2020.3, 2020.4, 2021.1, 2021.2
Windows Server 2019

Resolution

Perform the steps below to undo the custom configuration changes made to vizqlserver.vmopts:

tsm stop
tsm configuration set -k vizqlserver.vmopts -d
tsm pending-changes apply
tsm start

Cause

This is the error found in stdout_vizqlserver_node1-0.log:

OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
Unrecognized VM option 'UseParNewGC'
[ERROR] Error -6: Failed to initialize Java VM.

vizQL server will fail to start up due to -XX:+UseParNewGC which was set by default for Java 8 and no longer is no longer a valid option in Java 11.