I am using Parameterized Trigger Plugin to trigger a downstream build.
How do I specify that my upstream job should fail if the downstream fails? The upstream job is
Have a look at the following response: Fail hudson build with groovy script. You can get access to the upstream job and fail its build BUT... be careful with the fact that Hudson/Jenkins post-build actions right now do not allow to specify any ordering: if your groovy script is specified besides other post-build actions, and those actions affect the result of the build (i.e.: parsing of test results), then you won't be able to update the status of the upstream job if Jenkins decides to run them after your groovy script.