wu-sheng commented on code in PR #10448:
URL: https://github.com/apache/skywalking/pull/10448#discussion_r1118953641
##########
oap-server/server-storage-plugin/storage-banyandb-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/banyandb/BanyanDBAggregationQueryDAO.java:
##########
@@ -85,24 +60,45 @@ protected void apply(MeasureQuery query) {
throw new IOException("field spec is not registered");
}
+ if (schema.getTopNSpec() == null) {
+ throw new IOException("TopN spec is registered");
+ }
+
+ TopNQueryResponse resp = null;
+ if (condition.getOrder() == Order.DES) {
+ resp = topN(schema, timestampRange, condition.getTopN(),
additionalConditions);
+ } else {
+ resp = bottomN(schema, timestampRange, condition.getTopN(),
additionalConditions);
+ }
Review Comment:
Let's say there are 200 services, each service has 50k endpoints, we need
both service-based topN endpoints and global level topN endpoints. How do we
make this work?
If we only set the rule as top 1000, which are all belonging to several
services. This means we can't have topN for other services.
@lujiajing1126 @hanahmily What are your suggestions for this real case?
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