@@ -2370,6 +2370,7 @@ private void initMetricsCollection(MetricRegistry metricRegistry, List<LabelValu
 
 // The value of a maxSessionsInUse is observed from a callback function. This function is
 // invoked whenever metrics are collected.
+maxInUseSessionsMetric.removeTimeSeries(labelValues);
 maxInUseSessionsMetric.createTimeSeries(
 labelValues,
 this,
@@ -2382,6 +2383,7 @@ public long applyAsLong(SessionPool sessionPool) {
 
 // The value of a maxSessions is observed from a callback function. This function is invoked
 // whenever metrics are collected.
+maxAllowedSessionsMetric.removeTimeSeries(labelValues);
 maxAllowedSessionsMetric.createTimeSeries(
 labelValues,
 options,
@@ -2394,6 +2396,7 @@ public long applyAsLong(SessionPoolOptions options) {
 
 // The value of a numWaiterTimeouts is observed from a callback function. This function is
 // invoked whenever metrics are collected.
+sessionsTimeouts.removeTimeSeries(labelValues);
 sessionsTimeouts.createTimeSeries(
 labelValues,
 this,
@@ -2404,6 +2407,7 @@ public long applyAsLong(SessionPool sessionPool) {
 }
 });
 
+numAcquiredSessionsMetric.removeTimeSeries(labelValues);
 numAcquiredSessionsMetric.createTimeSeries(
 labelValues,
 this,
@@ -2414,6 +2418,7 @@ public long applyAsLong(SessionPool sessionPool) {
 }
 });
 
+numReleasedSessionsMetric.removeTimeSeries(labelValues);
 numReleasedSessionsMetric.createTimeSeries(
 labelValues,
 this,
@@ -2426,6 +2431,7 @@ public long applyAsLong(SessionPool sessionPool) {
 
 List<LabelValue> labelValuesWithBeingPreparedType = new ArrayList<>(labelValues);
 labelValuesWithBeingPreparedType.add(NUM_SESSIONS_BEING_PREPARED);
+numSessionsInPoolMetric.removeTimeSeries(labelValuesWithBeingPreparedType);
 numSessionsInPoolMetric.createTimeSeries(
 labelValuesWithBeingPreparedType,
 this,
@@ -2439,6 +2445,7 @@ public long applyAsLong(SessionPool sessionPool) {
 
 List<LabelValue> labelValuesWithInUseType = new ArrayList<>(labelValues);
 labelValuesWithInUseType.add(NUM_IN_USE_SESSIONS);
+numSessionsInPoolMetric.removeTimeSeries(labelValuesWithInUseType);
 numSessionsInPoolMetric.createTimeSeries(
 labelValuesWithInUseType,
 this,
@@ -2451,6 +2458,7 @@ public long applyAsLong(SessionPool sessionPool) {
 
 List<LabelValue> labelValuesWithReadType = new ArrayList<>(labelValues);
 labelValuesWithReadType.add(NUM_READ_SESSIONS);
+numSessionsInPoolMetric.removeTimeSeries(labelValuesWithReadType);
 numSessionsInPoolMetric.createTimeSeries(
 labelValuesWithReadType,
 this,
@@ -2463,6 +2471,7 @@ public long applyAsLong(SessionPool sessionPool) {
 
 List<LabelValue> labelValuesWithWriteType = new ArrayList<>(labelValues);
 labelValuesWithWriteType.add(NUM_WRITE_SESSIONS);
+numSessionsInPoolMetric.removeTimeSeries(labelValuesWithWriteType);
 numSessionsInPoolMetric.createTimeSeries(
 labelValuesWithWriteType,
 this,