Hello everyone, this is a notice that CDS/sal-distributed-datastore will ship an upgraded data streaming format in Neon SR2 -- something we have not done since Lithium.
This change impacts interoperability with previous versions (up to and including Neon SR1): 1) each node will upgrade its local data replica to the new format as soon as it performs recovery with Neon SR2 software. The only way to undo this upgrade is to restore the node, using mechanisms like daexim. 2) mixed-version shards will remain operational for as long as no Neon SR2 becomes the leader. Once this happens, Neon SR1-and-older slaves will not be able to join. 3) Neon SR2 shards can still service old clients, i.e. applications running on Neon SR1-or-older nodes. 4) Neon SR1 shards can service new clients, i.e. applications running on Neon SR2 nodes. 5) Unversioned users, like netconf-topology-singleton request routing and cluster-wide RPCs, are not affected by this change This break in compatibility is redeemed by the new streaming format being both faster and smaller -- as detailed here: https://pantheon.tech/opendaylight-neon-sr1-sr2/ Sodium release train also has these changes, with the notable difference that unversioned endpoints use the new streaming format. Regards, Robert
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