Make the commit Span a child of the ReadContext Span.

bogdandrutu · bogdandrutu · commit 8285a8b9a3cc · 2018-09-15T11:26:56.000-07:00
diff --git a/google-cloud-clients/google-cloud-spanner/src/main/java/com/google/cloud/spanner/SpannerImpl.java b/google-cloud-clients/google-cloud-spanner/src/main/java/com/google/cloud/spanner/SpannerImpl.java
@@ -1398,7 +1398,7 @@ void commit() {
         mutations = null;
       }
       final CommitRequest commitRequest = builder.build();
-      Span opSpan = tracer.spanBuilder(COMMIT).startSpan();
+      Span opSpan = tracer.spanBuilderWithExplicitParent(COMMIT, span).startSpan();
       try (Scope s = tracer.withSpan(opSpan)) {
         CommitResponse commitResponse =
             runWithRetries(

Original file line number	Diff line number	Diff line change
`@@ -1398,7 +1398,7 @@ void commit() {`
`1398`	`1398`	`mutations = null;`
`1399`	`1399`	`}`
`1400`	`1400`	`final CommitRequest commitRequest = builder.build();`
`1401`		`- Span opSpan = tracer.spanBuilder(COMMIT).startSpan();`
	`1401`	`+ Span opSpan = tracer.spanBuilderWithExplicitParent(COMMIT, span).startSpan();`
`1402`	`1402`	`try (Scope s = tracer.withSpan(opSpan)) {`
`1403`	`1403`	`CommitResponse commitResponse =`
`1404`	`1404`	`runWithRetries(`