core/src/main/java/com/datastax/oss/driver/internal/core/cql/CqlRequestHandler.java [927:936]:
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    private void trackNodeError(Node node, Throwable error, long nodeResponseTimeNanos) {
      if (requestTracker instanceof NoopRequestTracker) {
        return;
      }
      if (nodeResponseTimeNanos == NANOTIME_NOT_MEASURED_YET) {
        nodeResponseTimeNanos = System.nanoTime();
      }
      long latencyNanos = nodeResponseTimeNanos - this.nodeStartTimeNanos;
      requestTracker.onNodeError(statement, error, latencyNanos, executionProfile, node, logPrefix);
    }
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core/src/main/java/com/datastax/dse/driver/internal/core/graph/GraphRequestHandler.java [855:864]:
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    private void trackNodeError(Node node, Throwable error, long nodeResponseTimeNanos) {
      if (requestTracker instanceof NoopRequestTracker) {
        return;
      }
      if (nodeResponseTimeNanos == NANOTIME_NOT_MEASURED_YET) {
        nodeResponseTimeNanos = System.nanoTime();
      }
      long latencyNanos = nodeResponseTimeNanos - this.nodeStartTimeNanos;
      requestTracker.onNodeError(statement, error, latencyNanos, executionProfile, node, logPrefix);
    }
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