The original canal did not permit two-way traffic, and ships would stop in a passing bay to allow the passage of ships in the other direction.Transittime then averaged 40 hours, but by 1939 it had been reduced to 13 hours. A system of convoys was adopted in 1947, consisting of one no...
private Map<String, IService> serviceMap; private Map<String, String> tablePrimaryKeyMap; private Map<String, Class> tableClassMap; private SyncExcuteSqlService syncExcuteSqlService; private CanalSyncErrorRecordService canalSyncErrorRecordService; private SyncRecordService syncRecordService; private CanalCo...
Panama Canal cross sectionCross section of the Panama Canal, showing the various heights and depths of the lock system. 2 of 3 Gaillard CutCentennial Bridge spanning the Gaillard Cut section of the Panama Canal. 3 of 3 Panama Canal: Gatún LocksContainership in the first chamber of the Gat...
发现“Unknown system variable 'query_cache_size'”错误，原因可能是MySQL驱动包版本过低。建议更新至8.0.22版本的驱动器，并确保权限设置正确。“Reason: No converter found capable of converting from type [java.lang.String] to type [java.util.Map]”错误出现在Canal-adapter启动时，通过检查配...
Reason: No converter found capable of converting from type [java.lang.String] to type [java.util.Map<java.lang.String, java.lang.String>] 启动canal-adapter报错: 观察报错信息可以得知是配置文件中的outer2(0基,所以outer-adapter[1]实际指的是2)的properties配置有问题,我们观察配置文件,发现是propertie...
Canal是阿里巴巴开源的一款基于MySQL数据库binlog的增量订阅和消费组件,它的主要工作原理是伪装成MySQLslave,模拟MySQL slave的交互协议向MySQL Master发送dump协议。当MySQL master收到canal发送过来的dump请求后,开始推送binary log给canal,然后canal解析binary log,再发送到存储目的地,如MySQL,Kafka等。
Reason: No converter found capable of converting from type [java.lang.String] to type [java.util.Map<java.lang.String, java.lang.String>] 1. 2. 3. 解决: 观察报错信息可以得知是配置文件中的outer2(0基,所以outer-adapter[1]实际指的是2)的properties配置有问题,我们观察配置文件,发现是properties...
for (Map.Entry<String, InstanceConfig> entry : instanceConfigs.entrySet()) { final String destination = entry.getKey(); InstanceConfig config = entry.getValue(); // 创建destination的工作节点 //创建zookeeper节点成功后,对应的canal server就启动对应的canal instance,没有创建成功的canal instance就会处...
Sqoop是Hadoop和关系型数据库之间传送数据的一种工具，它是用来从关系型数据库如MySQL到Hadoop的HDFS从Hadoop文件系统导出数据到关系型数据库。Sqoop底层用的还是MapReducer，用的时候一定要注意数据倾斜。总结 老刘本篇文章主要讲述了Canal工具的核心知识点及其数据采集工具的对比，其中数据采集工具只是大致讲了讲概念和...
└── sql-map ├── sqlmap-config.xml ├── sqlmap_history.xml └── sqlmap_snapshot.xml canal.properties的common属性前四个配置项: 代码语言:javascript 复制 canal.id=1#canal的编号,在集群环境下,不同canal的id不同,注意它和mysql的server_id不同。