Pipeline runs twice everytime a PR is merged

Question

We recently started using pipeline for our open-source Mercurial project ControlsFX and we love it :D

Pipeline Details

We have 2 different branches - default and 9.0.0. We want to run default only when a PR targeted to default branch is merged. Similarly, run 9.0.0, when a PR targeted to 9.0.0 branch is merged.

pipelines:
  branches:
    default:
      - step:
          name: Build and assemble default branch
          image: cogniteev/oracle-java:java8
          caches:
            - gradle
          script:
            - chmod +x gradlew
            - ./gradlew clean assemble
    9.0.0:
      - step:
          name: Build and assemble 9.0.0 branch
          image: abhinay/oracle-java:java10
          caches:
            - gradle
          script:
            - chmod +x gradlew
            - ./gradlew clean assemble

Problem

After introducing the change to pipeline for branches, it has been running twice for the same commit. We are not sure what's going wrong.

We appreciate the help.

Thanks.

infinitydave · Answer

In my case this was caused by having multiple webhooks configured in my repo -> settings.

Steven Vaccarella · Answer

Hi Abhinay,

If you haven't already done so could you please raise a support ticket here: https://support.atlassian.com/contact

Be sure to include a link to the result page for one of the affected pipelines.

Cheers,
Steven