Cannot enable helium package due to conflict in yarn command (yarnpkg vs Hadoop Yarn)

Enabling Helium packages from Zeppelin fails with error:

com.github.eirslett.maven.plugins.frontendlib. TaskRunnerException: 'yarn install--fetch-retries=2 --fetch-retry-factor=1 --fetch-retry-mintimeout=5000 --registry=http://registry.npmjs.org/' failed.

I am able to trace the issue being caused due to the command 'yarn' pointing to /opt/hadoop/bin/yarn instead of /opt/yarn/bin which the Zeppelin expects, even though both paths are exported in bashrc.

Removing Hadoop installation or removing it from path is not possible due to Spark  requirements.

The issue may be avoided with the usage of 'npm install' instead of 'yarn install' on the Helium package.

Kindly suggest a fix or workaround for this issue.