nizhikov commented on a change in pull request #6737: IGNITE-11944  [IEP-35] 
OpencensusExporter should export Histogram metrics
URL: https://github.com/apache/ignite/pull/6737#discussion_r323213084
 
 

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 File path: 
modules/opencensus/src/main/java/org/apache/ignite/spi/metric/opencensus/OpenCensusMetricExporterSpi.java
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 @@ -118,6 +120,26 @@
      */
     private Map<String, Measure> measures = new HashMap<>();
 
+    /** Cached histogram metrics intervals names. */
+    private Map<T2<String, long[]>, String[]> histogramNames = new HashMap<>();
 
 Review comment:
   Seems, a map is not cleared on `MetricRegistry` remove.

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