HBASE-24767 Change default to false for HBASE-15519 per-user metrics Set hbase.regionserver.user.metrics.enabled default to false; i.e. off.

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsUserAggregateFactory.java

diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsUserAggregateFactory.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsUserAggregateFactory.java
index 38e440b..f766e91 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsUserAggregateFactory.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsUserAggregateFactory.java
@@ -28,7 +28,7 @@
   }
 
   public static final String METRIC_USER_ENABLED_CONF = "hbase.regionserver.user.metrics.enabled";
-  public static final boolean DEFAULT_METRIC_USER_ENABLED_CONF = true;
+  public static final boolean DEFAULT_METRIC_USER_ENABLED_CONF = false;
 
   public static MetricsUserAggregate getMetricsUserAggregate(Configuration conf) {
     if (conf.getBoolean(METRIC_USER_ENABLED_CONF, DEFAULT_METRIC_USER_ENABLED_CONF)) {