这是BUG吗：canal解析错误fetch failed by table meta:schemeN

如果canal从一个数据库binglog的第一条记录开始读取，那么canal在解析过程中，可能会因为在解析到某条binlog记录时，该记录对应的表被删掉了，而在binlog解析过程中canal会发送一条desc "schemeName.tableName"的sql： private TableMeta getTableMeta0(String fullname) throws IOException { ResultSetPacket packet = connection.query("desc " + fullname); return new TableMeta(fullname, parserTableMeta(packet)); }

而对应的表已经被删掉，这时候就会抛出这个异常，导致binlog读取无法继续下去

不知道这是不是个bug？或者是通过配置的方法解决？有没有阿里的大佬出来解答一下？

具体日志是这样的： 2017-08-10 14:26:56.593 [destination = 10.160.246.137-1379 , address = /10.160.246.137:1379 , EventParser]369 WARN c.a.otter.canal.parse.inbound.mysql.MysqlEventParser - ERROR ## parse this event has an error , last position : [EntryPosition[included=false,journalName= mysql-bin.000003,position=46788142,serverId=1092,timestamp=1493132987000]] com.alibaba.otter.canal.parse.exception.CanalParseException: parse row data failed. Caused by: com.alibaba.otter.canal.parse.exception.CanalParseException: com.google.common.collect.ComputationException: com.alibaba.otter.canal.parse.exception.CanalParseException: fetch failed by table meta:expert.bak_TB_ZXJ_ADVICE_COLLECT_ACTIVITY Caused by: com.google.common.collect.ComputationException: com.alibaba.otter.canal.parse.exception.CanalParseException: fetch failed by table meta:expert.bak_TB_ZXJ_ADVICE_COLLECT_ACTIVITY at com.google.common.collect.MapMaker$ComputingMapAdapter.get(MapMaker.java:889) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.TableMetaCache.getTableMeta(TableMetaCache.java:78) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.getTableMeta(LogEventConvert.java:677) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.parseRowsEvent(LogEventConvert.java:362) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.parse(LogEventConvert.java:108) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.parse(LogEventConvert.java:62) at com.alibaba.otter.canal.parse.inbound.AbstractEventParser.parseAndProfilingIfNecessary(AbstractEventParser.java:326) at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3$1.sink(AbstractEventParser.java:176) at com.alibaba.otter.canal.parse.inbound.mysql.MysqlConnection.dump(MysqlConnection.java:130) at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:209) at java.lang.Thread.run(Thread.java:745) Caused by: com.alibaba.otter.canal.parse.exception.CanalParseException: fetch failed by table meta:expert.bak_TB_ZXJ_ADVICE_COLLECT_ACTIVITY Caused by: java.io.IOException: ErrorPacket [errorNumber=1146, fieldCount=-1, message=Table 'expert.bak_TB_ZXJ_ADVICE_COLLECT_ACTIVITY' doesn't exist, sqlState=42S02, sqlStateMarker=#] with command: desc expert.bak_TB_ZXJ_ADVICE_COLLECT_ACTIVITY at com.alibaba.otter.canal.parse.driver.mysql.MysqlQueryExecutor.query(MysqlQueryExecutor.java:60) at com.alibaba.otter.canal.parse.inbound.mysql.MysqlConnection.query(MysqlConnection.java:73) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.TableMetaCache.getTableMeta0(TableMetaCache.java:105) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.TableMetaCache.access$000(TableMetaCache.java:26) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.TableMetaCache$1.apply(TableMetaCache.java:51) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.TableMetaCache$1.apply(TableMetaCache.java:42) at com.google.common.collect.ComputingConcurrentHashMap$ComputingValueReference.compute(ComputingConcurrentHashMap.java:356) at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.compute(ComputingConcurrentHashMap.java:182) at com.google.common.collect.ComputingConcurrentHashMap$ComputingSegment.getOrCompute(ComputingConcurrentHashMap.java:151) at com.google.common.collect.ComputingConcurrentHashMap.getOrCompute(ComputingConcurrentHashMap.java:67) at com.google.common.collect.MapMaker$ComputingMapAdapter.get(MapMaker.java:885) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.TableMetaCache.getTableMeta(TableMetaCache.java:78) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.getTableMeta(LogEventConvert.java:677) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.parseRowsEvent(LogEventConvert.java:362) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.parse(LogEventConvert.java:108) at com.alibaba.otter.canal.parse.inbound.mysql.dbsync.LogEventConvert.parse(LogEventConvert.java:62) at com.alibaba.otter.canal.parse.inbound.AbstractEventParser.parseAndProfilingIfNecessary(AbstractEventParser.java:326) at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3$1.sink(AbstractEventParser.java:176) at com.alibaba.otter.canal.parse.inbound.mysql.MysqlConnection.dump(MysqlConnection.java:130) at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:209) at java.lang.Thread.run(Thread.java:745)

原提问者GitHub用户whyliyu