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RATIS-1931. [DO-NOT-MERGE] Rebase gRPC zero-copy changes onto master.
- #1453
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RATIS-1931. [DO-NOT-MERGE] Rebase gRPC zero-copy changes onto master.
#1453
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RATIS-1925. Support Zero-Copy in GrpcClientProtocolService (#1007)
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RATIS-1990. Refactor appendEntries processing to support reference count (#1011)
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RATIS-2009. ReferenceCount should work for all LogEntry types. (#1021)
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RATIS-1934. Support Zero-Copy in GrpcServerProtocolService (#1014)
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RATIS-2007. Zero-copy buffers are not released (#1027)
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RATIS-2018. Zero-copy buffers are not released - 2nd chunk (#1032)
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RATIS-1978. Add tests assertions to verify all zero-copy messages are released properly (#1023)
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RATIS-1997. Refactor StateMachine interface to use ReferenceCountedObject (#1036)
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RATIS-2020. Refactor TransactionContext to supply LogEntryProto via a ReferenceCountedObject (#1042)
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RATIS-2028. Refactor RaftLog to supply log as ReferenceCountedObject (#1045)
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RATIS-2026. LogAppender to consume log entries with reference count (#1049)
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RATIS-1979. Allow StateMachine.read to return a ReferentCountedObject (#1062)
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RATIS-2059. Missing reference count when putting log entries to cache on follower. (#1067)
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RATIS-2077. Timedout StateMachine retainRead is released twice (#1081)
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RATIS-2092. Add metrics to expose number of zero-copy unclosed messages (#1095)
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RATIS-2096. Add a conf to enable/disable zero copy. (#1099)
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RATIS-2093. Decouple metadata and configuration entries from appendEntries buffer for stateMachineCache' (#1096)
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RATIS-2094. Avoid corruptions from TransactionContext's stateMachineLogEntry and stateMachineContext. (#1106)
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RATIS-2114. Corruption due to SegmentedRaftLogWorker queue LogEntry without reference counter (#1113)
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RATIS-2151. TestRaftWithGrpc keeps failing with zero-copy. (#1164)
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RATIS-2164. LeakDetector has a race condition. (#1163)
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RATIS-2173. Fix zero-copy bugs for non-gRPC cases. (#1167)
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RATIS-2220. Skip further tests after leak detected (#1193)
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RATIS-2225. RaftClientRequest leak in RaftServerImpl. (#1198)
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RATIS-2227. LogEntryProto leak in SegmentedRaftLog (#1199)
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RATIS-2414. Add leak detection for ZeroCopyMessageMarshaller. (#1355)
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