我有一个 mysql 集群，有 4 个 api 节点、2 个管理节点和 4 个数据节点。今天，我在尝试连接数据库时遇到问题，所有查询都挂在“打开表”状态。检查日志后，我在日志上发现了这些错误：
Api节点错误：
2015-08-20 19:44:14 15540 [Note] NDB Schema dist: Data node: 5 failed, subscriber bitmask 00
2015-08-20 19:44:14 15540 [Note] NDB Schema dist: Data node: 6 failed, subscriber bitmask 00
2015-08-20 19:44:14 15540 [Note] NDB Schema dist: Data node: 7 failed, subscriber bitmask 00
2015-08-20 19:44:14 15540 [Note] NDB Schema dist: Data node: 8 failed, subscriber bitmask 00
2015-08-20 19:44:14 15540 [Note] NDB Schema dist: cluster failure at epoch 3313124/17.
2015-08-20 …