virajjasani commented on a change in pull request #2995:
URL: https://github.com/apache/hbase/pull/2995#discussion_r585375638
##########
File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MetricsMasterWrapperImpl.java
##########
@@ -138,6 +138,24 @@ public int getNumDeadRegionServers() {
return !(master.isStopped() || master.isStopping());
}
+ @Override
+ public String getDrainingRegionServers() {
+ ServerManager serverManager = this.master.getServerManager();
+ if (serverManager == null) {
+ return "";
+ }
+ return StringUtils.join(serverManager.getDrainingServersList() , ";");
+ }
+
+ @Override
+ public int getNumDrainingRegionServers() {
+ ServerManager serverManager = this.master.getServerManager();
+ if (serverManager == null) {
+ return 0;
+ }
+ return serverManager.getDrainingServersList().size();
+ }
+
Review comment:
nit: good to reformat this code once for alignment
##########
File path:
hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMasterMetrics.java
##########
@@ -133,6 +133,7 @@ public void testDefaultMasterMetrics() throws Exception {
metricsHelper.assertGauge("numRegionServers", 1 + (tablesOnMaster ? 1 :
0), masterSource);
metricsHelper.assertGauge("averageLoad", 1, masterSource);
metricsHelper.assertGauge("numDeadRegionServers", 0, masterSource);
+ metricsHelper.assertGauge( "numDrainingRegionServers", 0, masterSource);
Review comment:
nit: reformat?
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