主备切换的问题

主备切换的过程中出现错误，log如下（注意mysql-bin.000029=7¾ 以及Could not find first log file name in binary log index） 2017-01-03 22:09:16.930 [destination = xiaopang3 , address = /192.168.6.123:3306 , EventParser] INFO c.alibaba.otter.canal.parse.driver.mysql.MysqlConnector - client authentication packet is sent out. 2017-01-03 22:09:16.934 [destination = xiaopang3 , address = /192.168.6.123:3306 , EventParser] INFO c.a.otter.canal.parse.inbound.mysql.MysqlConnection - COM_BINLOG_DUMP with position:BinlogDumpCommandPacket[binlogPosition=21725485,slaveServerId=1237,binlogFileName=mysql-bin.000029=7¾ ,command=18] 2017-01-03 22:09:16.935 [destination = xiaopang3 , address = /192.168.6.123:3306 , EventParser] 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 first log file name in binary log index file at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.DirectLogFetcher.fetch(DirectLogFetcher.java:95) ~[canal.parse-1.0.23.jar:na] at com.alibaba.otter.canal.parse.inbound.mysql.MysqlConnection.dump(MysqlConnection.java:121) [canal.parse-1.0.23.jar:na] at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:209) [canal.parse-1.0.23.jar:na] at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45] 2017-01-03 22:09:16.935 [destination = xiaopang3 , address = /192.168.6.123:3306 , EventParser] ERROR c.a.otter.canal.parse.inbound.mysql.MysqlEventParser - dump address /192.168.6.123:3306 has an error, retrying. caused by java.io.IOException: Received error packet: errno = 1236, sqlstate = HY000 errmsg = Could not find first log file name in binary log index file at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.DirectLogFetcher.fetch(DirectLogFetcher.java:95) ~[canal.parse-1.0.23.jar:na] at com.alibaba.otter.canal.parse.inbound.mysql.MysqlConnection.dump(MysqlConnection.java:121) ~[canal.parse-1.0.23.jar:na] at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:209) ~[canal.parse-1.0.23.jar:na] at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45] 2017-01-03 22:09:16.935 [destination = xiaopang3 , address = /192.168.6.123:3306 , EventParser] ERROR com.alibaba.otter.canal.common.

原提问者GitHub用户ch-lgs