pipeline job throws java.io.NotSerializableException: hudson.model.FreeStyleBuild sometimes

[Tidhar Klein Orbach]

Hi,

My pipeline script sometimes fails on the error above.

the pipeline runs a few FreeStyleBuilds using parallel step, some of them sometimes throw this exception, but sometimes succeed.

I tried to find the root cause, but the stacktrace is too general. I also read the Serialization tutorial and looked for similar issues, but haven't found.

I was wonder if someone encountered in such an issue? and if there a known fix or workaround?

thanks,

Tidhar