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causal delivery of deltas, #22188

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* keep track of delta interval versions and skip deltas
  that are not consequtive, i.e. when some delta message was lost
* send the delta versions in the full state gossip to sync up the
  expected versions after dropped deltas
* implementation of deltas for ORSet
* refactoring of the delta types to allow for different type for the
  delta and the full state
* extensive tests
* mima filter
* performance optimizations
* simple pruning of deltas
* Java API
* update documentation
* KeyId type alias
* Use InternalApi annotation
This commit is contained in:
Patrik Nordwall 2017-02-07 11:21:56 +01:00
parent 94afbee179
commit b700b840d1
41 changed files with 5010 additions and 1950 deletions
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16
akka-distributed-data/src/test/scala/akka/cluster/ddata/GSetSpec.scala
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@ -64,14 +64,14 @@ class GSetSpec extends WordSpec with Matchers {
val c12 = c11 + user1
val c13 = c12 + user2
c12.delta.elements should ===(Set(user1))
c13.delta.elements should ===(Set(user1, user2))
c12.delta.get.elements should ===(Set(user1))
c13.delta.get.elements should ===(Set(user1, user2))
// deltas build state
(c12 merge c13.delta) should ===(c13)
(c12 mergeDelta c13.delta.get) should ===(c13)
// own deltas are idempotent
(c13 merge c13.delta) should ===(c13)
(c13 mergeDelta c13.delta.get) should ===(c13)
// set 2
val c21 = GSet.empty[String]
@ -79,18 +79,18 @@ class GSetSpec extends WordSpec with Matchers {
val c22 = c21 + user3
val c23 = c22.resetDelta + user4
c22.delta.elements should ===(Set(user3))
c23.delta.elements should ===(Set(user4))
c22.delta.get.elements should ===(Set(user3))
c23.delta.get.elements should ===(Set(user4))
c23.elements should ===(Set(user3, user4))
val c33 = c13 merge c23
// merge both ways
val merged1 = GSet.empty[String] merge c12.delta merge c13.delta merge c22.delta merge c23.delta
val merged1 = GSet.empty[String] mergeDelta c12.delta.get mergeDelta c13.delta.get mergeDelta c22.delta.get mergeDelta c23.delta.get
merged1.elements should ===(Set(user1, user2, user3, user4))
val merged2 = GSet.empty[String] merge c23.delta merge c13.delta merge c22.delta
val merged2 = GSet.empty[String] mergeDelta c23.delta.get mergeDelta c13.delta.get mergeDelta c22.delta.get
merged2.elements should ===(Set(user1, user2, user3, user4))
merged1 should ===(c33)