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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@
import com.datastax.oss.driver.internal.core.metadata.MetadataManager.RefreshSchemaResult;
import com.datastax.oss.driver.internal.core.metadata.NodeStateEvent;
import com.datastax.oss.driver.internal.core.metadata.NodeStateManager;
import com.datastax.oss.driver.internal.core.metrics.NodeMetricUpdater;
import com.datastax.oss.driver.internal.core.metrics.SessionMetricUpdater;
import com.datastax.oss.driver.internal.core.pool.ChannelPool;
import com.datastax.oss.driver.internal.core.util.Loggers;
Expand Down Expand Up @@ -549,10 +550,11 @@ private void close() {

// clear metrics to prevent memory leak
for (Node n : metadataManager.getMetadata().getNodes().values()) {
((DefaultNode) n).getMetricUpdater().clearMetrics();
NodeMetricUpdater updater = ((DefaultNode) n).getMetricUpdater();
if (updater != null) updater.clearMetrics();
}

DefaultSession.this.metricUpdater.clearMetrics();
if (metricUpdater != null) metricUpdater.clearMetrics();

List<CompletionStage<Void>> childrenCloseStages = new ArrayList<>();
for (AsyncAutoCloseable closeable : internalComponentsToClose()) {
Expand All @@ -575,10 +577,11 @@ private void forceClose() {

// clear metrics to prevent memory leak
for (Node n : metadataManager.getMetadata().getNodes().values()) {
((DefaultNode) n).getMetricUpdater().clearMetrics();
NodeMetricUpdater updater = ((DefaultNode) n).getMetricUpdater();
if (updater != null) updater.clearMetrics();
}

DefaultSession.this.metricUpdater.clearMetrics();
if (metricUpdater != null) metricUpdater.clearMetrics();

if (closeWasCalled) {
// onChildrenClosed has already been scheduled
Expand Down