pg-yang commented on code in PR #9725:
URL: https://github.com/apache/skywalking/pull/9725#discussion_r985197392
##########
docs/en/concepts-and-designs/mal.md:
##########
@@ -164,7 +164,7 @@ These operations can be used to aggregate overall label
dimensions or preserve d
Example expression:
```
-instance_trace_count.sum(by: ['az'])
+instance_trace_count.sum(['az'])
Review Comment:
When I add by keyword , OAP throw exception
```
- name: sv_http_connections
exp: "apisix_nginx_http_current_connections.sum(by:
['state','host_name']).service(['host_name'] , Layer.APISIX)"
```
```
Possible solutions: sum(java.util.List), dump(), use([Ljava.lang.Object;),
any(), use(java.util.List, groovy.lang.Closure), use(java.lang.Class,
groovy.lang.Closure)
org.apache.skywalking.oap.meter.analyzer.dsl.ExpressionParsingException:
failed to parse expression: (apisix_nginx_http_current_connections.tag({tags ->
tags.host_name = 'apisix::' + tags.service_instance_id})).sum(by:
['state','host_name']).service(['host_name'] , Layer.APISIX), error:No
signature of method:
org.apache.skywalking.oap.meter.analyzer.dsl.SampleFamily.sum() is applicable
for argument types: (LinkedHashMap) values: [[by:[state, host_name]]]
Possible solutions: sum(java.util.List), dump(), use([Ljava.lang.Object;),
any(), use(java.util.List, groovy.lang.Closure), use(java.lang.Class,
groovy.lang.Closure)
at
org.apache.skywalking.oap.meter.analyzer.dsl.Expression.parse(Expression.java:59)
~[classes/:?]
at
org.apache.skywalking.oap.meter.analyzer.Analyzer.build(Analyzer.java:91)
~[classes/:?]
at
org.apache.skywalking.oap.meter.analyzer.MetricConvert.lambda$new$2(MetricConvert.java:71)
~[classes/:?]
at
java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
~[?:1.8.0_321]
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384)
~[?:1.8.0_321]
at
java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
~[?:1.8.0_321]
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
~[?:1.8.0_321]
at
java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
~[?:1.8.0_321]
at
java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
~[?:1.8.0_321]
at
java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
~[?:1.8.0_321]
at
org.apache.skywalking.oap.meter.analyzer.MetricConvert.<init>(MetricConvert.java:78)
~[classes/:?]
at
org.apache.skywalking.oap.meter.analyzer.prometheus.PrometheusMetricConverter.<init>(PrometheusMetricConverter.java:73)
~[classes/:?]
at
org.apache.skywalking.oap.server.receiver.otel.oc.OCMetricHandler.lambda$active$1(OCMetricHandler.java:188)
~[classes/:?]
at
java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
~[?:1.8.0_321]
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384)
~[?:1.8.0_321]
at
java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
~[?:1.8.0_321]
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
~[?:1.8.0_321]
at
java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
~[?:1.8.0_321]
at
java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
~[?:1.8.0_321]
at
java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
~[?:1.8.0_321]
```
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