Bug 2890: Chunk AppendEntries when single payload size exceeds threshold 01/57301/12
authorTom Pantelis <tompantelis@gmail.com>
Thu, 18 May 2017 13:23:04 +0000 (09:23 -0400)
committerRobert Varga <nite@hq.sk>
Thu, 29 Jun 2017 15:48:09 +0000 (15:48 +0000)
commit8d90cf04be86f872f7eeb892d37517d5ee087157
tree414f66a952e2e04219c34b5cde0f32cbb0d1f6ff
parent096c34d70b883dad442abe7ea19c694c204a5c53
Bug 2890: Chunk AppendEntries when single payload size exceeds threshold

Utilizes the MessageSlicer in AbstractLeader to slice/chunk AppendEntries
messages whose single log entry payloas exceeds the max size threshold.
The MessageAssembler is used in the Follower to re-assemble.

For efficiency, with multiple followers, the AbstractLeader reuses the
FileBackedOutputStream containing the serialized AppendEntries data.
However, since the MessageSlicer takes ownership of the FileBackedOutputStream
and cleans it up when slicing is complete, I added a
SharedFileBackedOutputStream class that maintains a usage count and
performs cleanup when the usage count reaches 0. The AbstractLeader maintains
a Map of SharedFileBackedOutputStream instances keyed by log index.

The FollowerLogInformation keeps track of whether or not slicing is in
progress for the follower. Same as with install snapshot, we only want to send
empty AppendEntries as heartbeats.

Change-Id: Id163944b9989f6cb39a6aaaa98d1f3c4b0026bbe
Signed-off-by: Tom Pantelis <tompantelis@gmail.com>
20 files changed:
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/FollowerLogInformation.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/FollowerLogInformationImpl.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContext.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/RaftActorContextImpl.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/SnapshotManager.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/AbstractLeader.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/Follower.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/FollowerIdentifier.java [new file with mode: 0644]
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/SnapshotTracker.java
opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/persisted/ServerConfigurationPayload.java
opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/AbstractRaftActorIntegrationTest.java
opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/ReplicationWithSlicedPayloadIntegrationTest.java [new file with mode: 0644]
opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/SnapshotManagerTest.java
opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/FollowerIdentifierTest.java [new file with mode: 0644]
opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/LeaderTest.java
opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/SnapshotTrackerTest.java
opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/io/FileBackedOutputStreamFactory.java
opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/io/SharedFileBackedOutputStream.java [new file with mode: 0644]
opendaylight/md-sal/sal-clustering-commons/src/test/java/org/opendaylight/controller/cluster/io/FileBackedOutputStreamTest.java
opendaylight/md-sal/sal-clustering-commons/src/test/java/org/opendaylight/controller/cluster/io/SharedFileBackedOutputStreamTest.java [new file with mode: 0644]

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