We were hit by this recently. About 60k backtraces in less than 4h, some as frequent as every 11ms:
root@juju-cstack-instance-67:/var/lib/juju/units/landscape-client-2/units/landscape-client-2# grep zookeeper.ConnectionLossException charm.log 2013-02-04 15:35:17,453: twisted@ERROR: zookeeper.ConnectionLossException: connection loss zookeeper.ConnectionLossException: connection loss /services/service-0000000050 2013-02-04 15:35:17,470: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,480: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,494: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,508: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,518: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,533: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,547: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,560: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,574: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,585: twisted@ERROR: zookeeper.ConnectionLossException: connection loss 2013-02-04 15:35:17,600: twisted@ERROR: zookeeper.ConnectionLossException: connection loss (...)
We were hit by this recently. About 60k backtraces in less than 4h, some as frequent as every 11ms:
root@juju- cstack- instance- 67:/var/ lib/juju/ units/landscape -client- 2/units/ landscape- client- 2# grep zookeeper. ConnectionLossE xception charm.log ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss /services/ service- 0000000050 ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss ConnectionLossE xception: connection loss
2013-02-04 15:35:17,453: twisted@ERROR: zookeeper.
zookeeper.
2013-02-04 15:35:17,470: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,480: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,494: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,508: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,518: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,533: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,547: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,560: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,574: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,585: twisted@ERROR: zookeeper.
2013-02-04 15:35:17,600: twisted@ERROR: zookeeper.
(...)