Hi,
We have recently introduced the breaking change in vdsm-jsonrpc-java [1]. Reactive streams package has been replaced with java.util.concurrent.Flow (shipped with JDK). This change is released with vdsm-jsonrpc-java-1.6.0.
This change had to be reflected in ovirt-engine as well (otherwise it would not compile). I was handled by this patch [2].
Unfortunately these two changes must be in sync. Please update vdsm-jsonrpc-java to 1.6.0 if you are already working on ovirt engine revision that includes [2].
Please accept my apologies for not letting you know earlier, ideally before these patches got merged.
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Artur Socha
Senior Software Engineer, RHV
Red Hat