adriancole commented on a change in pull request #2572: annotation query
parsing improvements
URL: https://github.com/apache/incubator-zipkin/pull/2572#discussion_r282413781
##########
File path: zipkin/src/main/java/zipkin2/storage/QueryRequest.java
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@@ -196,10 +197,13 @@ public Builder parseAnnotationQuery(@Nullable String
annotationQuery) {
for (String ann : annotationQuery.split(" and ", 100)) {
int idx = ann.indexOf('=');
if (idx == -1) {
- map.put(ann, "");
+ // put the annotation only if there is no key present already,
prevents overriding more specific tags
+ map.putIfAbsent(ann.trim(), "");
Review comment:
this is a JDK 1.8 function so failing because this type is in the core
library.
```suggestion
ann = ann.trim();
if (!map.containsKey(ann)) map.put(ann, "");
```
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