ctubbsii commented on a change in pull request #290: ACCUMULO-4392: Expose
metrics2 JVM metrics
URL: https://github.com/apache/accumulo/pull/290#discussion_r178375425
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File path:
server/base/src/main/java/org/apache/accumulo/server/metrics/MetricsSystemHelper.java
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@@ -16,20 +16,65 @@
*/
package org.apache.accumulo.server.metrics;
+import java.util.HashMap;
+import java.util.Map;
+
import org.apache.hadoop.metrics2.MetricsSystem;
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
+import org.apache.hadoop.metrics2.source.JvmMetrics;
+import org.apache.hadoop.metrics2.source.JvmMetricsInfo;
/**
*
*/
public class MetricsSystemHelper {
+ private static Map<String,String> serviceNameMap = new HashMap<>();
+ private static String processName = "Unknown";
+
+ static {
+ serviceNameMap.put("master", "Master");
+ serviceNameMap.put("tserver", "TabletServer");
+ serviceNameMap.put("monitor", "Monitor");
+ serviceNameMap.put("gc", "GarbageCollector");
+ serviceNameMap.put("tracer", "Tracer");
+ serviceNameMap.put("shell", "Shell");
+ }
+
+ public static void configure(String application) {
+ String serviceName = application;
+ if (MetricsSystemHelper.serviceNameMap.containsKey(application)) {
+ serviceName = MetricsSystemHelper.serviceNameMap.get(application);
+ }
+
+ // a system property containing 'instance' can be used if more than one
TabletServer is started on a host
+ String serviceInstance = "";
+ if (serviceName.equals("TabletServer")) {
Review comment:
This isn't necessary, since the service name can be configured with any
numeric suffix the user desires, without doing any serviceName translation
using the serviceNameMap.
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