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From GitBox <...@apache.org>
Subject [GitHub] [incubator-zipkin] adriancole commented on a change in pull request #2552: Fixes logging and metrics for collectors
Date Wed, 01 May 2019 04:19:38 GMT
adriancole commented on a change in pull request #2552: Fixes logging and metrics for collectors
URL: https://github.com/apache/incubator-zipkin/pull/2552#discussion_r280002785
 
 

 ##########
 File path: zipkin-collector/core/src/main/java/zipkin2/collector/Collector.java
 ##########
 @@ -110,34 +119,46 @@ public void accept(List<Span> spans, Callback<Void> callback)
{
     }
 
     try {
+      // adding a separate callback intentionally decouples collection from storage
       record(sampled, acceptSpansCallback(sampled));
       callback.onSuccess(null);
-    } catch (RuntimeException e) {
-      callback.onError(errorStoringSpans(sampled, e));
-      return;
+    } catch (RuntimeException | Error e) {
+      handleStorageError(spans, e, callback);
 
 Review comment:
   thanks for asking. so the most likely cause at this point is in the "record" method, which
I suppose we should rename to store. There's always a chance that there's an error in the
storage implementation prior to returning a call. For example, in Elasticsearch a failure
to install the index template would propagate here.
   
   ```
     void record(List<Span> sampled, Callback<Void> callback) {
       storage.spanConsumer().accept(sampled).enqueue(callback);
     }
   ```

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