Github user karanmehta93 commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/315#discussion_r207049490
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/monitoring/GlobalMetricRegistriesAdapter.java
---
@@ -0,0 +1,167 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.phoenix.monitoring;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.hbase.metrics.Counter;
+import org.apache.hadoop.hbase.metrics.Gauge;
+import org.apache.hadoop.hbase.metrics.Histogram;
+import org.apache.hadoop.hbase.metrics.Meter;
+import org.apache.hadoop.hbase.metrics.Metric;
+import org.apache.hadoop.hbase.metrics.MetricRegistry;
+import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
+import org.apache.hadoop.hbase.metrics.Timer;
+import org.apache.hadoop.metrics2.MetricsCollector;
+import org.apache.hadoop.metrics2.MetricsInfo;
+import org.apache.hadoop.metrics2.MetricsRecordBuilder;
+import org.apache.hadoop.metrics2.MetricsSource;
+import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
+import org.apache.hadoop.metrics2.lib.Interns;
+import org.apache.hadoop.metrics2.lib.MutableHistogram;
+import org.apache.hadoop.metrics2.source.JvmMetrics;
+
+/**
+ * Contents mostly copied from GlobalMetricRegistriesAdapter class from
hbase-hadoop2-compat
+ * The adapter attaches HBase's MetricRegistry to Hadoop's
DefaultMetricsSystem
+ * Doesn't handle dynamic attach/detach of registries
+ */
+public class GlobalMetricRegistriesAdapter {
+
+ private static final Log LOG =
LogFactory.getLog(GlobalMetricRegistriesAdapter.class);
+ private static GlobalMetricRegistriesAdapter INSTANCE;
+
+ private GlobalMetricRegistriesAdapter() {
+ DefaultMetricsSystem.initialize("HBase");
+ JvmMetrics.initSingleton("HBase", "");
--- End diff --
So if I understand this correctly, I will include a new property which
takes a csv of tags as input. Later on, I can split by comma and add those tags
to `HBaseMetrics2HadoopMetricsAdapter#snapshotAllMetrics()`. @joshelser
---
