Spring hbase-client : Zookeeper session created for each request - spring-boot

Question

I'm doing multiple scans in HBase with a java/spring boot API. However I have a doubt about performances of the way hbase-client manages connections (I use hbase-client 1.3.0).
Here is the code I use for scan :
#Repository
public abstract class AbstractHBaseRepository implements InitializingBean {
#Autowired
private HbaseTemplate hbaseTemplate;
private Connection connection;
#Override
public void afterPropertiesSet() throws Exception {
connection = ConnectionFactory.createConnection(hbaseTemplate.getConfiguration(), (ExecutorService) null, (User) null);
}
protected ResultScanner scan(String tableName, FilterList filters) {
Scan scan = new Scan();
// If list is not empty, apply filters
if (null != filters && !filters.getFilters().isEmpty()) {
scan.setFilter(filters);
}
try {
return connection.getTable(TableName.valueOf(tableName)).getScanner(scan);
} catch (IOException e) {
throw new RuntimeException("Unexpected HBase scan error", e);
}
}
}
What I see when debugging, and performing multiple API requests is :
HBase connection (Connection object) is kept alive and shared by all
threads => Good
For each scan performed, a new zookeeper session is created => Not good ?
For the second point, I have following logs each time :
INFO o.a.h.h.zookeeper.RecoverableZooKeeper : Process identifier=hconnection-0x2634f5f3 connecting to ZooKeeper ensemble=zoo.node:2181
INFO org.apache.zookeeper.ZooKeeper : Initiating client connection, connectString=zoo.node:2181,noeyyet7.noe.edf.fr:2181 sessionTimeout=120000 watcher=org.apache.hadoop.hbase.zookeeper.PendingWatcher#3467699e
INFO org.apache.zookeeper.ClientCnxn : Opening socket connection to server zoo.node/localhost:2181
INFO org.apache.zookeeper.ClientCnxn : Socket connection established to zoo.node/localhost:2181, initiating session
INFO org.apache.zookeeper.ClientCnxn : Session establishment complete on server zoo.node/localhost:2181, sessionid = 0x17f9803c1b2212c, negotiated timeout = 120000
INFO nectionManager$HConnectionImplementation : Closing zookeeper sessionid=0x17f9803c1b2212c
INFO org.apache.zookeeper.ZooKeeper : Session: 0x17f9803c1b2212c closed
INFO org.apache.zookeeper.ClientCnxn : EventThread shut down for session: 0x17f9803c1b2212c
Is it normal that a new zookeeper session is created for each HBase query ? Is there a way to keep it alive ?