/**
* @return true when the most recent RPC response indicated that the response was a heartbeat
* message. Heartbeat messages are sent back from the server when the processing of the scan
* request exceeds a certain time threshold. Heartbeats allow the server to avoid timeouts
* during long running scan operations.
*/
public boolean isHeartbeatMessage() {
return currentScannerCallable != null && currentScannerCallable.isHeartbeatMessage();
}
