mydumper hangs when mysql time out

[nong LO]

mydumper 0.9.1 hangs when mysql time out.

Last log show these lines:
2017-03-01 00:04:41 [INFO] - Thread 3 dumping data for `***********`.`port_situations_vues`
2017-03-01 00:04:42 [INFO] - Thread 3 dumping data for `***********`.`port_soldes`
2017-03-01 00:04:43 [INFO] - Empty table ***********.port_soldes
2017-03-01 00:04:43 [INFO] - Thread 3 dumping data for `***********`.`port_statut`
2017-03-01 00:04:45 [INFO] - Thread 3 dumping data for `***********`.`port_supports_historiques`
2017-03-01 00:04:47 [INFO] - Thread 3 dumping data for `***********`.`port_titres`

Only 1 thread is still connected, and no statement is running.

On mysql side, the log show these events :

2017-02-28T23:05:04.135607Z 1382 [Note] Connection 1382 avortée vers la bd: 'unconnected' utilisateur: '***********' hôte: '***********' (Timeout d'écriture des paquets envoyés)
2017-02-28T23:05:05.744316Z 1379 [Note] Connection 1379 avortée vers la bd: 'unconnected' utilisateur: '***********' hôte: '***********' (Timeout d'écriture des paquets envoyés)
2017-02-28T23:05:31.743933Z 1380 [Note] Connection 1380 avortée vers la bd: 'unconnected' utilisateur: '***********' hôte: '***********' (Timeout d'écriture des paquets envoyés)