canal读取PolarDB 的问题

ERROR c.a.o.canal.parse.inbound.mysql.dbsync.DirectLogFetcher

I/O error while reading from client socket java.io.IOException: Received error packet: errno = 1236, sqlstate = HY000 errmsg = could not find next log; the first event 'mysql-bin.000648' at 524288058, the last event read from '../log/mysql-bin.000649' at 524404562, the last byte read from '../log/mysql-bin.000649' at 524404562. 出现canal读取不到polarDB的位点的情况，重启该instance就可以从保存的位点继续读取。这种情况是因为什么引起的呀？不重启会一直延迟

1.1.4版本

原提问者GitHub用户yqzdy1207