Hi Robert, Looking at https://github.com/opendaylight/mdsal/blob/master/dom/mdsal-dom-api/src/main/java/org/opendaylight/mdsal/dom/api/DOMDataTreeShardingService.java
Few clarifications: For same prefix duplicate producers are not allowed - this is understandable. But there is a possibility that two distinct producers/shards can have overlapping prefixes - if this is allowed, would not there be a scenario wherein we could end up with a superset shard and subset shard Eg. Let's assume there is a subtree whose prefix is /a/b/c/d mapped to shard 1 and another /a/b/c/d/e/f mapped to another shard. In other words, we can have recursive shards (hypothetical worst case could be that these recursive shards could have their own backend instances). Would this not lead to relatively complex read and write routing implementations? Are such overlaps prevented by Sharding service contracts ? Regards Muthu -----Original Message----- From: controller-dev-boun...@lists.opendaylight.org [mailto:controller-dev-boun...@lists.opendaylight.org] On Behalf Of Robert Varga Sent: Sunday, December 25, 2016 11:35 PM To: Colin Dixon <co...@colindixon.com>; Shrenik Jain <shrenik.j...@research.iiit.ac.in> Cc: integration-...@lists.opendaylight.org <d...@lists.opendaylight.org>; controller-dev <controller-dev@lists.opendaylight.org>; mdsal-...@lists.opendaylight.org; intern-ad...@opendaylight.org Subject: Re: [controller-dev] Interested in Contribution : "Replacing the MD-SAL data store with etcd" On 12/23/2016 05:39 PM, Colin Dixon wrote: > It looks like this might be the most real it got: > https://git.opendaylight.org/gerrit/#/c/14998/ > <https://git.opendaylight.org/gerrit/#/c/14998/> It has gotten way more real than that, benchmarks for IMDS were presented at the last ODL Summit. Base entrypoint is implemented here: https://github.com/opendaylight/mdsal/blob/master/dom/mdsal-dom-broker/src/main/java/org/opendaylight/mdsal/dom/broker/ShardedDOMDataTree.java Helper classes for shard implementations live here: https://github.com/opendaylight/mdsal/tree/master/dom/mdsal-dom-spi/src/main/java/org/opendaylight/mdsal/dom/spi/shard IMDS implementation lives here: https://github.com/opendaylight/mdsal/blob/master/dom/mdsal-dom-inmemory-datastore/src/main/java/org/opendaylight/mdsal/dom/store/inmemory/InMemoryDOMDataTreeShard.java CDS implementation is under review, patch series starts here: https://git.opendaylight.org/gerrit/44943 Regards, Robert _______________________________________________ controller-dev mailing list controller-dev@lists.opendaylight.org https://lists.opendaylight.org/mailman/listinfo/controller-dev
