lujiajing1126 commented on code in PR #10448:
URL: https://github.com/apache/skywalking/pull/10448#discussion_r1118923225
##########
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:
I think we should always add complete groupByTags to the annotation in order
to make filter works.
BanyanDB client can restore those groupBy tags, thus we only need one TopN
processor in the database.
##########
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);
+ }
+
+ if (resp.size() == 0) {
+ return Collections.emptyList();
+ } else if (resp.size() > 1) { // since we have done aggregation, i.e.
MEAN
Review Comment:
Aggregation by avg
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