ss77892 commented on code in PR #10365:
URL: https://github.com/apache/ozone/pull/10365#discussion_r3313772326
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hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/ContainerStateMachine.java:
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@@ -508,13 +516,15 @@ public TransactionContext
startTransaction(RaftClientRequest request)
if (!blockAlreadyFinalized) {
Preconditions.checkArgument(write.hasData());
Preconditions.checkArgument(!write.getData().isEmpty());
- final WriteChunkRequestProto.Builder commitWriteChunkProto =
WriteChunkRequestProto.newBuilder(write)
- .clearData();
- protoBuilder.setWriteChunk(commitWriteChunkProto)
- .setPipelineID(getGroupId().getUuid().toString())
+ // Set metadata fields while the write chunk still contains data, then
snapshot.
+ protoBuilder.setPipelineID(getGroupId().getUuid().toString())
.setTraceID(proto.getTraceID());
-
- builder.setStateMachineData(write.getData());
+ // fullProtoWithData: token cleared, pipelineID set, chunk data
present — travels in AppendEntries.
+ fullProtoWithData = protoBuilder.build();
+ // Strip data for the WAL entry (logProto).
+
protoBuilder.setWriteChunk(WriteChunkRequestProto.newBuilder(write).clearData());
+ // stateMachineData carries the full proto so followers can parse it
directly.
+ builder.setStateMachineData(fullProtoWithData.toByteString());
Review Comment:
Do you mean a case like rolling upgrade when different versions of datanodes
would be present at the same time? Let me think about it.
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