diff --git a/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSource.java b/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSource.java
index ce9319ecbe7..d3707dfc99b 100644
--- a/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSource.java
+++ b/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSource.java
@@ -480,6 +480,9 @@ public interface MetricsRegionServerSource extends BaseSource, JvmPauseMonitorSo
   String HEDGED_READ_WINS = "hedgedReadWins";
   String HEDGED_READ_WINS_DESC =
       "The number of times we started a hedged read and a hedged read won";
+  String HEDGED_READ_IN_CUR_THREAD = "hedgedReadOpsInCurThread";
+  String HEDGED_READ_IN_CUR_THREAD_DESC =
+    "The number of times we execute a hedged read in current thread as a fallback for task rejection";
 
   String TOTAL_BYTES_READ = "totalBytesRead";
   String TOTAL_BYTES_READ_DESC = "The total number of bytes read from HDFS";
diff --git a/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapper.java b/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapper.java
index 2ed6ab48da6..1b5fc488d78 100644
--- a/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapper.java
+++ b/hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapper.java
@@ -442,6 +442,11 @@ public interface MetricsRegionServerWrapper {
    */
   long getHedgedReadWins();
 
+  /**
+   * @return Count of times a hedged read executes in current thread
+   */
+  long getHedgedReadOpsInCurThread();
+
   /**
    * @return Number of total bytes read from HDFS.
    */
diff --git a/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceImpl.java b/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceImpl.java
index e8d7f365625..fed48899158 100644
--- a/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceImpl.java
+++ b/hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceImpl.java
@@ -456,6 +456,8 @@ public class MetricsRegionServerSourceImpl
               .addCounter(Interns.info(HEDGED_READS, HEDGED_READS_DESC), rsWrap.getHedgedReadOps())
               .addCounter(Interns.info(HEDGED_READ_WINS, HEDGED_READ_WINS_DESC),
                       rsWrap.getHedgedReadWins())
+              .addCounter(Interns.info(HEDGED_READ_IN_CUR_THREAD, HEDGED_READ_IN_CUR_THREAD_DESC),
+                      rsWrap.getHedgedReadOpsInCurThread())
               .addCounter(Interns.info(BLOCKED_REQUESTS_COUNT, BLOCKED_REQUESTS_COUNT_DESC),
                       rsWrap.getBlockedRequestsCount())
               .tag(Interns.info(ZOOKEEPER_QUORUM_NAME, ZOOKEEPER_QUORUM_DESC),
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java
index 5e1431c5492..6425193c2ce 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java
@@ -906,6 +906,11 @@ class MetricsRegionServerWrapperImpl
     return this.dfsHedgedReadMetrics == null? 0: this.dfsHedgedReadMetrics.getHedgedReadWins();
   }
 
+  @Override
+  public long getHedgedReadOpsInCurThread() {
+    return this.dfsHedgedReadMetrics == null ? 0 : this.dfsHedgedReadMetrics.getHedgedReadOpsInCurThread();
+  }
+
   @Override
   public long getTotalBytesRead() {
     return FSDataInputStreamWrapper.getTotalBytesRead();
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperStub.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperStub.java
index 6402b4ed82f..907692121ca 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperStub.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperStub.java
@@ -410,6 +410,11 @@ public class MetricsRegionServerWrapperStub implements MetricsRegionServerWrappe
     return 10;
   }
 
+  @Override
+  public long getHedgedReadOpsInCurThread() {
+    return 5;
+  }
+
   @Override
   public long getTotalBytesRead() {
     return 0;
diff --git a/src/main/asciidoc/_chapters/performance.adoc b/src/main/asciidoc/_chapters/performance.adoc
index ad6572dabcc..6d3f8e4b5d7 100644
--- a/src/main/asciidoc/_chapters/performance.adoc
+++ b/src/main/asciidoc/_chapters/performance.adoc
@@ -801,6 +801,8 @@ See <<hbase_metrics>>  for more information.
   This could indicate that read requests are often slow, or that hedged reads are triggered too quickly.
 * hedgeReadOpsWin - the number of times the hedged read thread was faster than the original thread.
   This could indicate that a given RegionServer is having trouble servicing requests.
+* hedgedReadOpsInCurThread - the number of times hedged read was rejected from executor and needed to fallback to be executed in current thread.
+  This could indicate that current hedged read thread pool size is not appropriate.
 
 
 [[perf.deleting]]