do not pull out search execution context for attributes

Author: chrisparrinello

server/src/main/java/org/elasticsearch/index/search/stats/ShardSearchPhaseAPMMetrics.java

@@ -50,9 +50,7 @@ public ShardSearchPhaseAPMMetrics(MeterRegistry meterRegistry) {
 
     @Override
     public void onDfsPhase(SearchContext searchContext, long tookInNanos) {
-        SearchExecutionContext searchExecutionContext = searchContext.getSearchExecutionContext();
-        Long rangeTimestampFrom = searchExecutionContext.getRangeTimestampFrom();
-        recordPhaseLatency(dfsPhaseMetric, tookInNanos, searchContext.request(), rangeTimestampFrom);
+        recordPhaseLatency(dfsPhaseMetric, tookInNanos);
     }
 
     @Override
@@ -69,6 +67,10 @@ public void onFetchPhase(SearchContext searchContext, long tookInNanos) {
         recordPhaseLatency(fetchPhaseMetric, tookInNanos, searchContext.request(), rangeTimestampFrom);
     }
 
+    private static void recordPhaseLatency(LongHistogram histogramMetric, long tookInNanos) {
+        histogramMetric.record(TimeUnit.NANOSECONDS.toMillis(tookInNanos));
+    }
+
     private static void recordPhaseLatency(
         LongHistogram histogramMetric,
         long tookInNanos,