hanahmily commented on code in PR #239:
URL:
https://github.com/apache/skywalking-banyandb/pull/239#discussion_r1083372899
##########
banyand/liaison/grpc/registry.go:
##########
@@ -435,7 +437,37 @@ type topNAggregationRegistryServer struct {
func (ts *topNAggregationRegistryServer) Create(ctx context.Context,
req *databasev1.TopNAggregationRegistryServiceCreateRequest,
) (*databasev1.TopNAggregationRegistryServiceCreateResponse, error) {
- if err :=
ts.schemaRegistry.TopNAggregationRegistry().CreateTopNAggregation(ctx,
req.GetTopNAggregation()); err != nil {
+ topNSchema := req.GetTopNAggregation()
Review Comment:
Placing the creation in the loading phase ensures the measure always exists.
Restarting the server will create the target measure if it's missing. As I
mentioned, banyandb doesn't support transactional operations. Creating more
than one resource in a task is too dangerous.
There are two options here:
1. Move `processorManager.start` to the `Serve` phase. That means you should
iterate all measures to start their embedded `processorManager`
2. Introduce Etcd's transactional operation. Move the creation operation to
the `metadata` module instead of `liaison`.
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