===========================================
#opendaylight-meeting: Kernel Projects Call
===========================================


Meeting started by rovarga_ at 16:01:48 UTC.  The full logs are
available at
http://meetings.opendaylight.org/opendaylight-meeting/2019/kernel_projects_call/opendaylight-meeting-kernel_projects_call.2019-06-25-16.01.log.html
.



Meeting summary
---------------

* Clustering in ODL  (skitt, 16:02:19)
  * the default datastore is the clustered datastore  (skitt, 16:02:34)
  * by default it replicates data across all nodes and provides access
    to the data across the cluster  (skitt, 16:02:51)
  * for any single piece of data, there is a single master in the
    cluster  (skitt, 16:04:10)
  * any modification goes through the master (leader)  (skitt, 16:04:19)
  * leaders are chosen per shard  (skitt, 16:04:33)
  * from the developer's perspective, if you write a transaction and
    submit it, you get a future which succeeds when the data is
    persisted  (skitt, 16:05:24)
  * in the current implementation, success is indicated when the data is
    stored in a majority of the nodes (cluster consensus) — but that's
    an implementation detail  (skitt, 16:05:53)
  * the contract is that when the future succeeds, the data is securely
    stored (barring operator error as always)  (skitt, 16:06:15)
  * if you kill the leader, before a transaction succeeds, the
    transaction will eventually fail  (skitt, 16:09:38)
  * after a transaction succeeds, before the success message was sent,
    the committing client will receive a failure, but the data is
    actually there  (skitt, 16:11:15)

* OpenFlowPlugin reviews  (skitt, 16:16:14)
  * rovarga_ has a few patches stuck in limbo  (skitt, 16:16:21)
  * Ericsson committers only +1 patches apparently, and when Anil
    doesn't merge patches nothing happens  (skitt, 16:16:45)
  * ACTION: LuisGomez to bring this up in next Monday's call  (skitt,
    16:17:22)

* https://jira.opendaylight.org/browse/MDSAL-456  (rovarga_, 16:18:04)
  * LINK: https://git.opendaylight.org/gerrit/82558  (rovarga_,
    16:18:23)

* karaf-4.2.6  (rovarga_, 16:22:01)
  * with Karaf 4.2.6, there's a wiring issue between Akka persistence
    and LevelDB  (skitt, 16:24:49)
  * starting LevelDB first, and then persistence, works  (skitt,
    16:25:03)
  * starting persistence on its own, then something else, works  (skitt,
    16:25:11)
  * starting everything in one go fails  (skitt, 16:25:18)
  * triggering a bundle refresh later on fixes everything  (skitt,
    16:25:57)
  * so it looks like feature:install with optional imports, skips a
    propagation path  (skitt, 16:26:17)
  * it feels like a resolver bug  (skitt, 16:26:35)
  * ACTION: skitt to check whether Karaf 4.2.5 + the Equinox downgrade
    works with multipatch  (skitt, 16:28:29)

* MD-SAL simple patches  (skitt, 16:34:31)
  * rovarga_ merged a few of Michael's patches, the remaining ones need
    quite a lot of rework  (skitt, 16:34:45)

* archetypes  (rovarga_, 16:36:00)
  * we'll skip all the Fluorine SRs until SR3  (skitt, 16:37:09)
  * the first proper archetypes release will be 1.0.3  (skitt, 16:37:16)
  * fluorine jobs are suspended pending SR3 activities  (rovarga_,
    16:37:18)



Meeting ended at 16:47:26 UTC.



Action items, by person
-----------------------

* skitt
  * skitt to check whether Karaf 4.2.5 + the Equinox downgrade works
    with multipatch



People present (lines said)
---------------------------

* skitt (28)
* rovarga_ (8)
* odl_meetbot (7)
* rovarga (0)



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