HBASE-25717 RegionServer aborted with due to ClassCastException (#3108)
Signed-off-by: stack <stack@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MetaTableMetrics.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MetaTableMetrics.java
index 0918e59..0af89cb 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MetaTableMetrics.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MetaTableMetrics.java
@@ -20,10 +20,10 @@
package org.apache.hadoop.hbase.coprocessor;
import java.io.IOException;
-import java.util.HashSet;
import java.util.List;
import java.util.Optional;
import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
@@ -58,7 +58,7 @@
private MetricRegistry registry;
private LossyCounting clientMetricsLossyCounting, regionMetricsLossyCounting;
private boolean active = false;
- private Set<String> metrics = new HashSet<>();
+ private Set<String> metrics = ConcurrentHashMap.newKeySet();
enum MetaTableOps {
GET, PUT, DELETE,
