There are some jobs created at jenkins. These jobs configured Gerrit event trigger. When Change Merged, some jobs will build.But sometimes, these jobs didn't build.I catch gerrit stream-events, there had change-merged type event. Sunch as:
"type":"change-merged","change":{"project":"xx","branch":"xx","id":"xx","number":"xx"....

I don't know why jobs can't build.The probability of missing jobs is very big.
Can someone help me?
How to solve this issue, or how to analyse this issue.